GHSA-q3j3-w37x-hq2q

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.

Database specific

{
    "nvd_published_at": "2021-11-24T19:15:00Z",
    "cwe_ids": [
        "CWE-444"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2021-11-24T19:58:05Z"
}

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