Description
An issue was discovered in Http Foundation in Symfony 2.7.0 through 2.7.48, 2.8.0 through 2.8.43, 3.3.0 through 3.3.17, 3.4.0 through 3.4.13, 4.0.0 through 4.0.13, and 4.1.0 through 4.1.2. It arises from support for a (legacy) IIS header that lets users override the path in the request URL via the X-Original-URL or X-Rewrite-URL HTTP request header. These headers are designed for IIS support, but it's not verified that the server is in fact running IIS, which means anybody who can send these requests to an application can trigger this. This affects \Symfony\Component\HttpFoundation\Request::prepareRequestUri() where X-Original-URL and X_REWRITE_URL are both used. The fix drops support for these methods so that they cannot be used as attack vectors such as web cache poisoning.
Remediation
References
Related Vulnerabilities
MySQL CVE-2019-2811 Vulnerability (CVE-2019-2811)
Jenkins Cross-Site Request Forgery (CSRF) Vulnerability (CVE-2019-10384)
Apache Traffic Server Out-of-bounds Write Vulnerability (CVE-2021-35474)
WordPress Plugin Role Scoper Cross-Site Scripting (1.3.64)
WordPress Plugin WP Js External Link Info Open Redirect (1.21)