Apache mod_proxy HTML Injection / Partial XSS

Sooraj V Nair

Published on

10 Jan 2022

Vulnerability

Description

A restricted cross-site scripting vulnerability was reported in Apache HTTP Server 2.4.0-2.4.39, affecting the mod proxy error page. An attacker might make the link on the error page faulty, causing it to redirect to a URL of their choosing. This would only be exploitable if a server was set up with proxying enabled but the Proxy Error page was displayed due to a configuration error.

Recommendation

Update Apache to the latest version
Correctly configure the Proxy settings

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