CVE-2018-14773

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.

References

https://www.drupal.org/SA-CORE-2018-005

https://symfony.com/blog/cve-2018-14773-remove-support-for-legacy-and-risky-http-headers

https://github.com/symfony/symfony/commit/e447e8b92148ddb3d1956b96638600ec95e08f6b

http://www.securitytracker.com/id/1041405

http://www.securityfocus.com/bid/104943

https://lists.debian.org/debian-lts-announce/2019/03/msg00009.html

https://www.debian.org/security/2019/dsa-4441

https://seclists.org/bugtraq/2019/May/21

Details

Risk Information

CVSS v2

CVSS v3