GHSA-q3j3-w37x-hq2q

Suggest an improvement
Source
https://github.com/advisories/GHSA-q3j3-w37x-hq2q
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/11/GHSA-q3j3-w37x-hq2q/GHSA-q3j3-w37x-hq2q.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-q3j3-w37x-hq2q
Aliases
Published
2021-11-24T20:04:25Z
Modified
2024-02-16T08:15:54.989197Z
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
Webcache Poisoning in symfony/http-kernel
Details

Description

When a Symfony application is running behind a proxy or a load-balancer, you can tell Symfony to look for the X-Forwarded-* HTTP headers. HTTP headers that are not part of the "trusted_headers" allowed list are ignored and protect you from "Cache poisoning" attacks.

In Symfony 5.2, we've added support for the X-Forwarded-Prefix header, but this header was accessible in sub-requests, even if it was not part of the "trusted_headers" allowed list. An attacker could leverage this opportunity to forge requests containing a X-Forwarded-Prefix HTTP header, leading to a web cache poisoning issue.

Resolution

Symfony now ensures that the X-Forwarded-Prefix HTTP header is not forwarded to sub-requests when it is not trusted.

The patch for this issue is available here for branch 5.3.

Credits

We would like to thank Soner Sayakci for reporting the issue and Jérémy Derussé for fixing the issue.

References

Affected packages

Packagist / symfony/http-kernel

Package

Name
symfony/http-kernel
Purl
pkg:composer/symfony/http-kernel

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.2.0
Fixed
5.3.12

Affected versions

v5.*

v5.2.0
v5.2.1
v5.2.2
v5.2.3
v5.2.4
v5.2.5
v5.2.6
v5.2.7
v5.2.8
v5.2.9
v5.2.10
v5.2.11
v5.2.12
v5.2.13
v5.2.14
v5.3.0-BETA1
v5.3.0-BETA2
v5.3.0-BETA3
v5.3.0-BETA4
v5.3.0-RC1
v5.3.0
v5.3.1
v5.3.2
v5.3.3
v5.3.4
v5.3.5
v5.3.6
v5.3.7
v5.3.8
v5.3.9
v5.3.10
v5.3.11

Packagist / symfony/symfony

Package

Name
symfony/symfony
Purl
pkg:composer/symfony/symfony

Affected ranges

Type
ECOSYSTEM
Events
Introduced
5.2.0
Fixed
5.3.12

Affected versions

v5.*

v5.2.0
v5.2.1
v5.2.2
v5.2.3
v5.2.4
v5.2.5
v5.2.6
v5.2.7
v5.2.8
v5.2.9
v5.2.10
v5.2.11
v5.2.12
v5.2.13
v5.2.14
v5.3.0-BETA1
v5.3.0-BETA2
v5.3.0-BETA3
v5.3.0-BETA4
v5.3.0-RC1
v5.3.0
v5.3.1
v5.3.2
v5.3.3
v5.3.4
v5.3.5
v5.3.6
v5.3.7
v5.3.8
v5.3.9
v5.3.10
v5.3.11