CVE-2024-34899: AVideo cross-site scripting vulnerability in the view/about.php page

May 20, 2024

The PHP file view/about.php is vulnerable to an XSS issue due to no sanitization of the user agent.

At line [53], the website gets the user-agent from the headers through $_SERVER[‘HTTP_USER_AGENT’] and echo it without any sanitization.

In PHP, echo a user generated statement, here the User-Agent Header, without any sanitization allows an attacker to inject malicious scripts into the output of a web page, which are then executed in the browser of anyone viewing that page.

References

github.com/WWBN/AVideo
github.com/WWBN/AVideo/commit/345711562621d879e63a817d01a229bf0aae7a1d
github.com/WWBN/AVideo/security/advisories/GHSA-f98p-2hc5-fm7v
github.com/advisories/GHSA-f98p-2hc5-fm7v
hackerdna.com/courses/cve/cve-2024-34899
nvd.nist.gov/vuln/detail/CVE-2024-34899

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