rss-bridge/bridges/CVEDetailsBridge.php
Aaron F 11ce8b5dcd
CVEDetails got a new HTML layout. (#3577)
This fixes the parser for CVEDetails.
2023-07-27 23:54:17 +02:00

150 lines
5.2 KiB
PHP

<?php
// CVE Details is a collection of CVEs, taken from the National Vulnerability
// Database (NVD) and other sources like the Exploit DB and Metasploit. The
// website categorizes it by vendor and product and attach the CWE category.
// There is a Atom feed available, but only logged in users can use it,
// it is not reliable and contain no useful information. This bridge create a
// sane feed with additional information like tags and a link to the CWE
// a description of the vulnerability.
class CVEDetailsBridge extends BridgeAbstract
{
const MAINTAINER = 'Aaron Fischer';
const NAME = 'CVE Details';
const CACHE_TIMEOUT = 60 * 60 * 6; // 6 hours
const DESCRIPTION = 'Report new CVE vulnerabilities for a given vendor (and product)';
const URI = 'https://www.cvedetails.com';
const PARAMETERS = [[
// The Vendor ID can be taken from the URL
'vendor_id' => [
'name' => 'Vendor ID',
'type' => 'number',
'required' => true,
'exampleValue' => 74, // PHP
],
// The optional Product ID can be taken from the URL as well
'product_id' => [
'name' => 'Product ID',
'type' => 'number',
'required' => false,
'exampleValue' => 128, // PHP
],
]];
private $html = null;
private $vendor = '';
private $product = '';
// Return the URL to query.
// Because of the optional product ID, we need to attach it if it is
// set. The search result page has the exact same structure (with and
// without the product ID).
private function buildUrl()
{
$url = self::URI . '/vulnerability-list/vendor_id-' . $this->getInput('vendor_id');
if ($this->getInput('product_id') !== '') {
$url .= '/product_id-' . $this->getInput('product_id');
}
// Sadly, there is no way (prove me wrong please) to sort the search
// result by publish date. So the nearest alternative is the CVE
// number, which should be mostly accurate.
$url .= '?order=1'; // Order by CVE number DESC
return $url;
}
// Make the actual request to cvedetails.com and stores the response
// (HTML) for later use and extract vendor and product from it.
private function fetchContent()
{
$html = getSimpleHTMLDOM($this->buildUrl());
$this->html = defaultLinkTo($html, self::URI);
$vendor = $html->find('#contentdiv h1 > a', 0);
if ($vendor == null) {
returnServerError('Invalid Vendor ID ' .
$this->getInput('vendor_id') .
' or Product ID ' .
$this->getInput('product_id'));
}
$this->vendor = $vendor->innertext;
$product = $html->find('#contentdiv h1 > a', 1);
if ($product != null) {
$this->product = $product->innertext;
}
}
// Build the name of the feed.
public function getName()
{
if ($this->getInput('vendor_id') == '') {
return self::NAME;
}
if ($this->html == null) {
$this->fetchContent();
}
$name = 'CVE Vulnerabilities for ' . $this->vendor;
if ($this->product != '') {
$name .= '/' . $this->product;
}
return $name;
}
// Pull the data from the HTML response and fill the items..
public function collectData()
{
if ($this->html == null) {
$this->fetchContent();
}
foreach ($this->html->find('#searchresults > .row') as $i => $tr) {
// There are some optional vulnerability types, which will be
// added to the categories as well as the CWE number -- which is
// always given.
$categories = [$this->vendor];
$enclosures = [];
$detailLink = $tr->find('.cveheader > h3 > a', 0);
$detailHtml = getSimpleHTMLDOM($detailLink->href);
$div = $detailHtml->find('.cvedetailssummary', 0);
// The CVE number itself
$title = $div->find('h1 > a', 0)->innertext;
$content = $div->find('.ssc-paragraph', 0)->innertext;
$cweList = $detailHtml->find('h2', 2)->next_sibling();
foreach ($cweList->find('li') as $li) {
$cweWithDescription = $li->find('a', 0)->innertext;
preg_match('/CWE-(\d+)/', $cweWithDescription, $cwe);
if (count($cwe) > 1) {
$categories[] = 'CWE-' . $cwe[1];
$enclosures[] = 'https://cwe.mitre.org/data/definitions/' . $cwe[1] . '.html';
}
}
if ($this->product != '') {
$categories[] = $this->product;
}
$this->items[] = [
'uri' => 'https://cvedetails.com/' . $detailHtml->find('h1 > a', 0)->href,
'title' => $title,
'timestamp' => $tr->find('td', 5)->innertext,
'content' => $content,
'categories' => $categories,
'enclosures' => $enclosures,
'uid' => $title,
];
// We only want to fetch the latest 10 CVEs
if (count($this->items) >= 10) {
break;
}
}
}
}