mirror of
https://github.com/RSS-Bridge/rss-bridge.git
synced 2025-04-03 16:19:45 +00:00
596 lines
24 KiB
PHP
596 lines
24 KiB
PHP
<?php
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class OpenCVEBridge extends BridgeAbstract
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{
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const MAINTAINER = 'sqrtminusone';
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const NAME = 'OpenCVE Bridge';
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const URI = 'https://opencve.io';
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const CACHE_TIMEOUT = 3600; // 1 hour
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const DESCRIPTION = 'A feed for search results from OpenCVE';
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const PARAMETERS = [
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'' => [
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'instance' => [
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'name' => 'OpenCVE Instance',
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'required' => true,
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'defaultValue' => 'https://app.opencve.io',
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'exampleValue' => 'https://app.opencve.io'
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],
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'login' => [
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'name' => 'Login',
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'type' => 'text',
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'required' => true
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],
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'password' => [
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'name' => 'Password',
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'type' => 'text',
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'required' => true
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],
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'pages' => [
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'name' => 'Number of pages',
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'type' => 'number',
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'required' => false,
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'exampleValue' => 1,
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'defaultValue' => 1
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],
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'filter' => [
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'name' => 'Filter',
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'type' => 'text',
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'required' => false,
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'exampleValue' => 'search:jenkins;product:gitlab,cvss:critical',
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'title' => 'Syntax: param1:value1,param2:value2;param1query2:param2query2. See https://docs.opencve.io/api/cve/ for parameters'
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],
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'upd_timestamp' => [
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'name' => 'Use updated_at instead of created_at as timestamp',
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'type' => 'checkbox'
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],
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'trunc_summary' => [
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'name' => 'Truncate summary for header',
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'type' => 'number',
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'defaultValue' => 100
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],
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'fetch_contents' => [
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'name' => 'Fetch detailed contents for CVEs',
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'defaultValue' => 'checked',
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'type' => 'checkbox'
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]
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]
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];
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const CSS = '
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<style>
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.cvss-na-color {
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background-color: #d2d6de;
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color: #000;
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}
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.cvss-low-color {
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background-color: #0073b7;
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color: #fff;
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}
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.cvss-medium-color {
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background-color: #f39c12;
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color: #fff;
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}
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.cvss-high-color {
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background-color: #dd4b39;
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color: #fff;
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}
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.cvss-crit-color {
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background-color: #972b1e;
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color: #fff;
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}
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.label {
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padding: .2em .6em .3em;
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font-size: 75%;
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font-weight: 700;
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line-height: 1;
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text-align: center;
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white-space: nowrap;
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border-radius: .25em;
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}
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.labels-row {
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display: flex;
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flex-direction: row;
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align-items: center;
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white-space: nowrap;
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overflow: hidden;
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margin-bottom: 6px;
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}
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.labels-row div {
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margin-right: 6px;
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}
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.cvss-table table {
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border-collapse: collapse;
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width: 100%;
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margin-bottom: 12px;
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}
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.cvss-table td, th {
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border: 1px solid #dddddd;
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text-align: left;
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padding: 8px;
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}
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</style>';
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public function collectData()
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{
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$creds = $this->getInput('login') . ':' . $this->getInput('password');
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$authHeader = 'Authorization: Basic ' . base64_encode($creds);
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$instance = $this->getInput('instance');
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$queries = [];
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$filter = $this->getInput('filter');
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$filterValues = [];
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if ($filter && mb_strlen($filter) > 0) {
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$filterValues = explode(';', $filter);
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} else {
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$queries[''] = [];
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}
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foreach ($filterValues as $filterValue) {
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$params = explode(',', $filterValue);
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$queryName = $filterValue;
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$query = [];
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foreach ($params as $param) {
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[$key, $value] = explode(':', $param);
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if ($key == 'title') {
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$queryName = $value;
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} else {
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$query[$key] = $value;
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}
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}
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$queries[$queryName] = $query;
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}
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$fetchedIds = [];
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foreach ($queries as $queryName => $query) {
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for ($i = 1; $i <= $this->getInput('pages'); $i++) {
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$queryPaginated = array_merge($query, ['page' => $i]);
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$url = $instance . '/api/cve?' . http_build_query($queryPaginated);
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$response = getContents($url, [$authHeader]);
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$titlePrefix = '';
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if (count($queries) > 1) {
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$titlePrefix = '[' . $queryName . '] ';
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}
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foreach (json_decode($response)->results as $cveItem) {
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if (array_key_exists($cveItem->cve_id, $fetchedIds)) {
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continue;
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}
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$fetchedIds[$cveItem->cve_id] = true;
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$item = [
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'uri' => $instance . '/cve/' . $cveItem->cve_id,
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'uid' => $cveItem->cve_id,
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];
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if ($this->getInput('upd_timestamp') == 1) {
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$item['timestamp'] = strtotime($cveItem->updated_at);
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} else {
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$item['timestamp'] = strtotime($cveItem->created_at);
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}
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if ($this->getInput('fetch_contents')) {
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[$content, $title] = $this->fetchContents(
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$cveItem,
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$titlePrefix,
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$instance,
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$authHeader
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);
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$item['content'] = $content;
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$item['title'] = $title;
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} else {
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$item['content'] = $cveItem->description . $this->getLinks($cveItem->cve_id);
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$item['title'] = $this->getTitle($titlePrefix, $cveItem);
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}
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$this->items[] = $item;
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}
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}
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}
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usort($this->items, function ($a, $b) {
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return $b['timestamp'] - $a['timestamp'];
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});
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}
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private function getTitle($titlePrefix, $cveItem)
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{
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$summary = $cveItem->description;
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$limit = $this->getInput('limit');
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if ($limit && mb_strlen($summary) > 100) {
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$summary = mb_substr($summary, 0, $limit) + '...';
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}
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return $titlePrefix . $cveItem->cve_id . '. ' . $summary;
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}
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private function fetchContents($cveItem, $titlePrefix, $instance, $authHeader)
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{
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$url = $instance . '/api/cve/' . $cveItem->cve_id;
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$response = getContents($url, [$authHeader]);
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$datum = json_decode($response);
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$title = $this->getTitleFromDatum($datum, $titlePrefix);
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$result = self::CSS;
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$result .= '<h1>' . $cveItem->cve_id . '</h1>';
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$result .= $this->getCVSSLabels($datum);
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$result .= '<p>' . $datum->description . '</p>';
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$result .= <<<EOD
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<h3>Information:</h3>
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<p>
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<ul>
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<li><b>Created At</b>: {$datum->created_at}
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<li><b>Updated At</b>: {$datum->updated_at}
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</ul>
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</p>
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EOD;
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if (isset($datum->metrics->cvssV4_0->data->vector)) {
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$result .= $this->cvssV4VectorToTable($datum->metrics->cvssV4_0->data->vector);
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}
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if (isset($datum->metrics->cvssV3_1->data->vector)) {
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$result .= $this->cvssV3VectorToTable($datum->metrics->cvssV3_1->data->vector);
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}
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if (isset($datum->metrics->cvssV3_0->data->vector)) {
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$result .= $this->cvssV3VectorToTable($datum->metrics->cvssV3_0->data->vector);
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}
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if (isset($datum->metrics->cvssV2_0->data->vector)) {
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$result .= $this->cvssV2VectorToTable($datum->metrics->cvssV2_0->data->vector);
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}
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$result .= $this->getLinks($datum->cve_id);
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$result .= $this->getVendors($datum);
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return [$result, $title];
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}
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private function getTitleFromDatum($datum, $titlePrefix)
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{
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$title = $titlePrefix;
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if (isset($datum->metrics->cvssV4_0->data->score)) {
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$title .= "[v4: {$datum->metrics->cvssV4_0->data->score}] ";
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}
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if (isset($datum->metrics->cvssV3_1->data->score)) {
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$title .= "[v3.1: {$datum->metrics->cvssV3_1->data->score}] ";
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}
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if (isset($datum->metrics->cvssV3_0->data->score)) {
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$title .= "[v3: {$datum->metrics->cvssV3_0->data->score}] ";
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}
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if (isset($datum->metrics->cvssV2_0->data->score)) {
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$title .= "[v2: {$datum->metrics->cvssV2_0->data->score}] ";
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}
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$title .= $datum->cve_id . '. ';
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$titlePostfix = $datum->description;
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$limit = $this->getInput('limit');
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if ($limit && mb_strlen($titlePostfix) > 100) {
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$titlePostfix = mb_substr($titlePostfix, 0, $limit) + '...';
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}
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$title .= $titlePostfix;
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return $title;
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}
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private function getCVSSLabels($datum)
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{
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$cvss4 = '';
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$cvss31 = '';
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$cvss3 = '';
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$cvss2 = '';
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if (isset($datum->metrics->cvssV4_0->data->score)) {
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$cvss4 = $this->formatCVSSLabel($datum->metrics->cvssV4_0->data->score, '4.0', 9, 7, 4);
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}
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if (isset($datum->metrics->cvssV3_1->data->score)) {
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$cvss31 = $this->formatCVSSLabel($datum->metrics->cvssV3_1->data->score, '3.1', 9, 7, 4);
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}
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if (isset($datum->metrics->cvssV3_0->data->score)) {
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$cvss3 = $this->formatCVSSLabel($datum->metrics->cvssV3_0->data->score, '3.0', 9, 7, 4);
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}
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if (isset($datum->metrics->cvssV2_0->data->score)) {
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$cvss2 = $this->formatCVSSLabel($datum->metrics->cvssV2_0->data->score, '2.0', 99, 7, 4);
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}
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return '<div class="labels-row">' . $cvss4 . $cvss31 . $cvss3 . $cvss2 . '</div>';
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}
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private function formatCVSSLabel($score, $version, $critical_thr, $high_thr, $medium_thr)
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{
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$text = 'n/a';
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$class = 'cvss-na-color';
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if ($score) {
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$importance = '';
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if ($score >= $critical_thr) {
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$importance = 'CRITICAL';
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$class = 'cvss-crit-color';
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} else if ($score >= $high_thr) {
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$importance = 'HIGH';
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$class = 'cvss-high-color';
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} else if ($score >= $medium_thr) {
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$importance = 'MEDIUM';
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$class = 'cvss-medium-color';
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} else {
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$importance = 'LOW';
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$class = 'cvss-low-color';
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}
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$text = sprintf('[%s] %.1f', $importance, $score);
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}
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$item = "<div>CVSS {$version}: </div><div class=\"label {$class}\">{$text}</div>";
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return $item;
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}
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private function getLinks($id)
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{
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return <<<EOD
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<h3>Links</h3>
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<p>
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<ul>
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<li>NVD Link: <a href="https://nvd.nist.gov/vuln/detail/{$id}">{$id}</a>
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<li>MITRE Link: <a href="https://cve.mitre.org/cgi-bin/cvename.cgi?name={$id}">{$id}</a>
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<li>CVE.ORG Link: <a href="https://www.cve.org/CVERecord?id={$id}">{$id}</a>
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</ul>
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</p>
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EOD;
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}
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private function cvssV3VectorToTable($cvssVector)
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{
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$vectorComponents = [];
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$parts = explode('/', $cvssVector);
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if (!preg_match('/^CVSS:3\.[01]/', $parts[0])) {
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return 'Error: Not a valid CVSS v3.0 or v3.1 vector';
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}
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for ($i = 1; $i < count($parts); $i++) {
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$component = explode(':', $parts[$i]);
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if (count($component) == 2) {
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$vectorComponents[$component[0]] = $component[1];
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}
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}
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$readableNames = [
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'AV' => ['N' => 'Network', 'A' => 'Adjacent', 'L' => 'Local', 'P' => 'Physical'],
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'AC' => ['L' => 'Low', 'H' => 'High'],
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'PR' => ['N' => 'None', 'L' => 'Low', 'H' => 'High'],
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'UI' => ['N' => 'None', 'R' => 'Required'],
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'S' => ['U' => 'Unchanged', 'C' => 'Changed'],
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'C' => ['N' => 'None', 'L' => 'Low', 'H' => 'High'],
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'I' => ['N' => 'None', 'L' => 'Low', 'H' => 'High'],
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'A' => ['N' => 'None', 'L' => 'Low', 'H' => 'High']
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];
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$data = new stdClass();
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$data->attackVector = isset($readableNames['AV'][$vectorComponents['AV']]) ? $readableNames['AV'][$vectorComponents['AV']] : 'Unknown';
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$data->attackComplexity = isset($readableNames['AC'][$vectorComponents['AC']]) ? $readableNames['AC'][$vectorComponents['AC']] : 'Unknown';
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$data->privilegesRequired = isset($readableNames['PR'][$vectorComponents['PR']]) ? $readableNames['PR'][$vectorComponents['PR']] : 'Unknown';
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$data->userInteraction = isset($readableNames['UI'][$vectorComponents['UI']]) ? $readableNames['UI'][$vectorComponents['UI']] : 'Unknown';
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$data->scope = isset($readableNames['S'][$vectorComponents['S']]) ? $readableNames['S'][$vectorComponents['S']] : 'Unknown';
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$data->confidentialityImpact = isset($readableNames['C'][$vectorComponents['C']]) ? $readableNames['C'][$vectorComponents['C']] : 'Unknown';
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$data->integrityImpact = isset($readableNames['I'][$vectorComponents['I']]) ? $readableNames['I'][$vectorComponents['I']] : 'Unknown';
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$data->availabilityImpact = isset($readableNames['A'][$vectorComponents['A']]) ? $readableNames['A'][$vectorComponents['A']] : 'Unknown';
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$html = '<div class="cvss-table">
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<h3>CVSS v3 details</h3>
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<table>
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<tr>
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<td>Attack vector</td><td>' . $data->attackVector . '</td>
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<td>Confidentiality Impact</td><td>' . $data->confidentialityImpact . '</td>
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</tr>
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<tr>
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<td>Attack complexity</td><td>' . $data->attackComplexity . '</td>
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<td>Integrity Impact</td><td>' . $data->integrityImpact . '</td>
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</tr>
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<tr>
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<td>Privileges Required</td><td>' . $data->privilegesRequired . '</td>
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<td>Availability Impact</td><td>' . $data->availabilityImpact . '</td>
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</tr>
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<tr>
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<td>User Interaction</td><td>' . $data->userInteraction . '</td>
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<td>Scope</td><td>' . $data->scope . '</td>
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</tr>
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</table>
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</div>';
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return $html;
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}
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private function cvssV2VectorToTable($cvssVector)
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{
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$vectorComponents = [];
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$parts = explode('/', $cvssVector);
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foreach ($parts as $part) {
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$component = explode(':', $part);
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if (count($component) == 2) {
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$vectorComponents[$component[0]] = $component[1];
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}
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}
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$readableNames = [
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'AV' => ['L' => 'Local', 'A' => 'Adjacent Network', 'N' => 'Network'],
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'AC' => ['H' => 'High', 'M' => 'Medium', 'L' => 'Low'],
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'Au' => ['M' => 'Multiple', 'S' => 'Single', 'N' => 'None'],
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'C' => ['N' => 'None', 'P' => 'Partial', 'C' => 'Complete'],
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'I' => ['N' => 'None', 'P' => 'Partial', 'C' => 'Complete'],
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'A' => ['N' => 'None', 'P' => 'Partial', 'C' => 'Complete']
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];
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$metricValues = [
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'AV' => ['L' => 0.395, 'A' => 0.646, 'N' => 1.0],
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'AC' => ['H' => 0.35, 'M' => 0.61, 'L' => 0.71],
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'Au' => ['M' => 0.45, 'S' => 0.56, 'N' => 0.704],
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'C' => ['N' => 0, 'P' => 0.275, 'C' => 0.660],
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'I' => ['N' => 0, 'P' => 0.275, 'C' => 0.660],
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'A' => ['N' => 0, 'P' => 0.275, 'C' => 0.660]
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];
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$confImpact = isset($metricValues['C'][$vectorComponents['C']]) ? $metricValues['C'][$vectorComponents['C']] : 0;
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$integImpact = isset($metricValues['I'][$vectorComponents['I']]) ? $metricValues['I'][$vectorComponents['I']] : 0;
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$availImpact = isset($metricValues['A'][$vectorComponents['A']]) ? $metricValues['A'][$vectorComponents['A']] : 0;
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$impact = 10.41 * (1 - (1 - $confImpact) * (1 - $integImpact) * (1 - $availImpact));
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$av = isset($metricValues['AV'][$vectorComponents['AV']]) ? $metricValues['AV'][$vectorComponents['AV']] : 0;
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$ac = isset($metricValues['AC'][$vectorComponents['AC']]) ? $metricValues['AC'][$vectorComponents['AC']] : 0;
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$au = isset($metricValues['Au'][$vectorComponents['Au']]) ? $metricValues['Au'][$vectorComponents['Au']] : 0;
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$exploitability = 20 * $av * $ac * $au;
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$impact = round($impact, 1);
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$exploitability = round($exploitability, 1);
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$data = new stdClass();
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$data->accessVector = isset($readableNames['AV'][$vectorComponents['AV']]) ? $readableNames['AV'][$vectorComponents['AV']] : 'Unknown';
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$data->accessComplexity = isset($readableNames['AC'][$vectorComponents['AC']]) ? $readableNames['AC'][$vectorComponents['AC']] : 'Unknown';
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$data->authentication = isset($readableNames['Au'][$vectorComponents['Au']]) ? $readableNames['Au'][$vectorComponents['Au']] : 'Unknown';
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$data->confidentialityImpact = isset($readableNames['C'][$vectorComponents['C']]) ? $readableNames['C'][$vectorComponents['C']] : 'Unknown';
|
|
$data->integrityImpact = isset($readableNames['I'][$vectorComponents['I']]) ? $readableNames['I'][$vectorComponents['I']] : 'Unknown';
|
|
$data->availabilityImpact = isset($readableNames['A'][$vectorComponents['A']]) ? $readableNames['A'][$vectorComponents['A']] : 'Unknown';
|
|
|
|
$v2 = new stdClass();
|
|
$v2->impactScore = $impact;
|
|
$v2->exploitabilityScore = $exploitability;
|
|
|
|
$html = '<div class="cvss-table">
|
|
<h3>CVSS v2 details</h3>
|
|
<table>
|
|
<tr>
|
|
<td>Impact score</td><td>' . $v2->impactScore . '</td>
|
|
<td>Exploitability score</td><td>' . $v2->exploitabilityScore . '</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Access Vector</td><td>' . $data->accessVector . '</td>
|
|
<td>Confidentiality Impact</td><td>' . $data->confidentialityImpact . '</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Access Complexity</td><td>' . $data->accessComplexity . '</td>
|
|
<td>Integrity Impact</td><td>' . $data->integrityImpact . '</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Authentication</td><td>' . $data->authentication . '</td>
|
|
<td>Availability Impact</td><td>' . $data->availabilityImpact . '</td>
|
|
</tr>
|
|
</table>
|
|
</div>';
|
|
|
|
return $html;
|
|
}
|
|
|
|
private function cvssV4VectorToTable($cvssVector)
|
|
{
|
|
$vectorComponents = [];
|
|
$parts = explode('/', $cvssVector);
|
|
|
|
if (!preg_match('/^CVSS:4\.0/', $parts[0])) {
|
|
return 'Error: Not a valid CVSS v4.0 vector';
|
|
}
|
|
|
|
for ($i = 1; $i < count($parts); $i++) {
|
|
$component = explode(':', $parts[$i]);
|
|
if (count($component) == 2) {
|
|
$vectorComponents[$component[0]] = $component[1];
|
|
}
|
|
}
|
|
|
|
$readableNames = [
|
|
'AV' => ['N' => 'Network', 'A' => 'Adjacent', 'L' => 'Local', 'P' => 'Physical'],
|
|
'AC' => ['L' => 'Low', 'H' => 'High'],
|
|
'AT' => ['N' => 'None', 'P' => 'Present'],
|
|
'PR' => ['N' => 'None', 'L' => 'Low', 'H' => 'High'],
|
|
'UI' => ['N' => 'None', 'P' => 'Passive', 'A' => 'Active'],
|
|
'VC' => ['N' => 'None', 'L' => 'Low', 'H' => 'High'],
|
|
'VI' => ['N' => 'None', 'L' => 'Low', 'H' => 'High'],
|
|
'VA' => ['N' => 'None', 'L' => 'Low', 'H' => 'High'],
|
|
'SC' => ['N' => 'None', 'L' => 'Low', 'H' => 'High'],
|
|
'SI' => ['N' => 'None', 'L' => 'Low', 'H' => 'High'],
|
|
'SA' => ['N' => 'None', 'L' => 'Low', 'H' => 'High']
|
|
];
|
|
|
|
$data = new stdClass();
|
|
$data->attackVector = isset($readableNames['AV'][$vectorComponents['AV']]) ? $readableNames['AV'][$vectorComponents['AV']] : 'Unknown';
|
|
$data->attackComplexity = isset($readableNames['AC'][$vectorComponents['AC']]) ? $readableNames['AC'][$vectorComponents['AC']] : 'Unknown';
|
|
$data->privilegesRequired = isset($readableNames['PR'][$vectorComponents['PR']]) ? $readableNames['PR'][$vectorComponents['PR']] : 'Unknown';
|
|
$data->attackRequirements = isset($readableNames['AT'][$vectorComponents['AT']]) ? $readableNames['AT'][$vectorComponents['AT']] : 'Unknown';
|
|
$data->userInteraction = isset($readableNames['UI'][$vectorComponents['UI']]) ? $readableNames['UI'][$vectorComponents['UI']] : 'Unknown';
|
|
$data->confidentialityImpact = isset($readableNames['VC'][$vectorComponents['VC']]) ? $readableNames['VC'][$vectorComponents['VC']] : 'Unknown';
|
|
$data->integrityImpact = isset($readableNames['VI'][$vectorComponents['VI']]) ? $readableNames['VI'][$vectorComponents['VI']] : 'Unknown';
|
|
$data->availabilityImpact = isset($readableNames['VA'][$vectorComponents['VA']]) ? $readableNames['VA'][$vectorComponents['VA']] : 'Unknown';
|
|
$data->confidentialityImpactS = isset($readableNames['SC'][$vectorComponents['SC']]) ? $readableNames['SC'][$vectorComponents['SC']] : 'Unknown';
|
|
$data->integrityImpactS = isset($readableNames['SI'][$vectorComponents['SI']]) ? $readableNames['SI'][$vectorComponents['SI']] : 'Unknown';
|
|
$data->availabilityImpactS = isset($readableNames['SA'][$vectorComponents['SA']]) ? $readableNames['SA'][$vectorComponents['SA']] : 'Unknown';
|
|
|
|
$html = '<div class="cvss-table">
|
|
<h3>CVSS v4.0 details</h3>
|
|
<table>
|
|
<tr>
|
|
<td>Attack vector</td><td>' . $data->attackVector . '</td>
|
|
<td>Vulnerable System Confidentiality Impact</td><td>' . $data->confidentialityImpact . '</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Attack complexity</td><td>' . $data->attackComplexity . '</td>
|
|
<td>Vulnerable System Integrity Impact</td><td>' . $data->integrityImpact . '</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Privileges Required</td><td>' . $data->privilegesRequired . '</td>
|
|
<td>Vulnerable System Availability Impact</td><td>' . $data->availabilityImpact . '</td>
|
|
</tr>
|
|
<tr>
|
|
<td>Attack Requirements</td><td>' . $data->attackRequirements . '</td>
|
|
<td>Subsequent System Confidentiality Impact</td><td>' . $data->confidentialityImpactS . '</td>
|
|
</tr>
|
|
<tr>
|
|
<td>User Interaction</td><td>' . $data->userInteraction . '</td>
|
|
<td>Subsequent System Integrity Impact</td><td>' . $data->integrityImpactS . '</td>
|
|
</tr>
|
|
<tr>
|
|
<td></td><td></td>
|
|
<td>Subsequent System Avaliablity Impact</td><td>' . $data->availabilityImpactS . '</td>
|
|
</tr>
|
|
</table>
|
|
</div>';
|
|
|
|
return $html;
|
|
}
|
|
|
|
|
|
private function getVendors($datum)
|
|
{
|
|
if (count((array)$datum->vendors) == 0) {
|
|
return '';
|
|
}
|
|
|
|
$vendor_data = [];
|
|
foreach ($datum->vendors as $vendor_str) {
|
|
$pieces = explode('$PRODUCT$', $vendor_str);
|
|
if (count($pieces) == 1) {
|
|
$vendor = $pieces[0];
|
|
if (!array_key_exists($vendor, $vendor_data)) {
|
|
$vendor_data[$vendor] = [];
|
|
}
|
|
} else {
|
|
$vendor = $pieces[0];
|
|
$product = $pieces[1];
|
|
if (!array_key_exists($vendor, $vendor_data)) {
|
|
$vendor_data[$vendor] = [];
|
|
}
|
|
array_push($vendor_data[$vendor], $product);
|
|
}
|
|
}
|
|
|
|
$res = '<h3>Affected products</h3><p><ul>';
|
|
foreach ($vendor_data as $vendor => $products) {
|
|
$res .= "<li>{$vendor}";
|
|
if (count($products) > 0) {
|
|
$res .= '<ul>';
|
|
foreach ($products as $product) {
|
|
$res .= '<li>' . $product . '</li>';
|
|
}
|
|
$res .= '</ul>';
|
|
}
|
|
$res .= '</li>';
|
|
}
|
|
$res .= '</ul></p>';
|
|
return $res;
|
|
}
|
|
}
|