CVE-2021-41267: Webcache Poisoning in Symfony
First published: Sat Oct 09 2021(Updated: )
CVE-2021-41267: Webcache Poisoning via X-Forwarded-Prefix and sub-request
Credit: security-advisories@github.com security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/symfony/http-kernel | >=5.2.0<5.3.0>=5.3.0<5.3.12 | |
| composer/symfony/symfony | >=5.2.0<5.3.0>=5.3.0<5.3.12 | |
| SensioLabs Symfony | >=5.2.0<5.3.12 | |
| composer/symfony/symfony | >=5.2.0<5.3.12 | 5.3.12 |
| composer/symfony/http-kernel | >=5.2.0<5.3.12 | 5.3.12 |
Never miss a vulnerability like this again
Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.
Reference Links
- https://symfony.com/cve-2021-41267
- https://github.com/symfony/symfony/commit/95dcf51682029e89450aee86267e3d553aa7c487
- https://github.com/symfony/symfony/pull/44243
- https://github.com/symfony/symfony/releases/tag/v5.3.12
- https://github.com/symfony/symfony/security/advisories/GHSA-q3j3-w37x-hq2q
- https://nvd.nist.gov/vuln/detail/CVE-2021-41267
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-kernel/CVE-2021-41267.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2021-41267.yaml
- https://github.com/advisories/GHSA-q3j3-w37x-hq2q (Advisory)
Frequently Asked Questions
What is CVE-2021-41267?
CVE-2021-41267 is a vulnerability that allows web cache poisoning through the X-Forwarded-Prefix header and sub-requests.
What software is affected by CVE-2021-41267?
CVE-2021-41267 affects the Symfony HttpKernel library version 5.2.0 up to 5.3.12.
How can I fix CVE-2021-41267?
To fix CVE-2021-41267, it is recommended to upgrade the affected Symfony HttpKernel library to version 5.3.13 or higher.
Where can I find more information about CVE-2021-41267?
You can find more information about CVE-2021-41267 on the Symfony website at https://symfony.com/cve-2021-41267.
- collector/friends-of-php
- collector/nvd-index
- agent/type
- agent/first-publish-date
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-q3j3-w37x-hq2q
- alias/CVE-2021-41267
- agent/software-canonical-lookup
- agent/severity
- agent/weakness
- agent/remedy
- agent/references
- agent/description
- collector/nvd-cve
- source/NVD
- agent/softwarecombine
- collector/github-advisory
- collector/mitre-cve
- source/MITRE
- agent/title
- collector/nvd-api
- agent/last-modified-date
- agent/author
- agent/tags
- agent/event
- agent/trending
- package-manager/composer
- vendor/sensiolabs
- canonical/sensiolabs symfony
- version/sensiolabs symfony/5.2.0