CVE-2022-31109 Information

Description

laminas-diactoros is a PHP package containing implementations of the PSR-7 HTTP message interfaces and PSR-17 HTTP message factory interfaces. Applications that use Diactoros and are either not behind a proxy or can be accessed via untrusted proxies can potentially have the host protocol and/or port of a Laminas\Diactoros\Uri instance associated with the incoming server request modified to reflect values from X-Forwarded- headers. Such changes can potentially lead to XSS attacks (if a fully-qualified URL is used in links) and/or URL poisoning. Since the X-Forwarded- headers do have valid use cases particularly in clustered environments using a load balancer the library offers mitigation measures only in the v2 releases as doing otherwise would break these use cases immediately. Users of v2 releases from 2.11.1 can provide an additional argument to Laminas\Diactoros\ServerRequestFactory::fromGlobals() in the form of a Laminas\Diactoros\RequestFilter\RequestFilterInterface instance including the shipped Laminas\Diactoros\RequestFilter\NoOpRequestFilter implementation which ignores the X-Forwarded- headers. Starting in version 3.0 the library will reverse behavior to use the NoOpRequestFilter by default and require users to opt-in to X-Forwarded- header usage via a configured Laminas\Diactoros\RequestFilter\LegacyXForwardedHeaderFilter instance. Users are advised to upgrade to version 2.11.1 or later to resolve this issue. Users unable to upgrade may configure web servers to reject X-Forwarded- headers at the web server level.

Reference

https://github.com/laminas/laminas-diactoros/commit/25b11d422c2e5dad868f68619888763b30f91e2d https://github.com/laminas/laminas-diactoros/security/advisories/GHSA-8274-h5jp-97vr https://portswigger.net/web-security/host-header