UBUNTU-CVE-2021-41267
- Source
- https://ubuntu.com/security/CVE-2021-41267
- Import Source
- https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-41267.json
- JSON Data
- https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-41267
- Related
- Published
- 2021-11-24T19:15:00Z
- Modified
- 2024-10-15T14:08:25Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
Symfony/Http-Kernel is the HTTP kernel component for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Headers that are not part of the "trustedheaders" allowed list are ignored and protect users from "Cache poisoning" attacks. In Symfony 5.2, maintainers added support for the
X-Forwarded-Prefixheaders, but this header was accessible in SubRequest, even if it was not part of the "trustedheaders" allowed list. An attacker could leverage this opportunity to forge requests containing aX-Forwarded-Prefixheader, leading to a web cache poisoning issue. Versions 5.3.12 and later have a patch to ensure that theX-Forwarded-Prefixheader is not forwarded to subrequests when it is not trusted. - References
-
- https://ubuntu.com/security/CVE-2021-41267
- https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q
- https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487
- https://github.com/symfony/symfony/releases/tag/v5.3.12
- https://github.com/symfony/symfony/pull/44243
- https://www.cve.org/CVERecord?id=CVE-2021-41267
Affected packages
Ubuntu:22.04:LTS / symfony
Package
- Name
- symfony
- Purl
- pkg:deb/ubuntu/symfony?arch=src?distro=jammy
Ubuntu:24.10 / symfony
Package
- Name
- symfony
- Purl
- pkg:deb/ubuntu/symfony?arch=src?distro=oracular