CVE-2024-50343: Incorrect response from Validator when input ends with `\n` in symfony/validator
First published: Wed Nov 06 2024(Updated: )
### Description It is possible to trick a `Validator` configured with a regular expression using the `$` metacharacters, with an input ending with `\n`. ### Resolution Symfony now uses the `D` regex modifier to match the entire input. The patch for this issue is available [here](https://github.com/symfony/symfony/commit/7d1032bbead9a4229b32fa6ebca32681c80cb76f) for branch 5.4. ### Credits We would like to thank Offscript for reporting the issue and Alexandre Daubois for providing the fix.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/symfony/validator | >=7.0.0<7.1.4 | 7.1.4 |
| composer/symfony/validator | >=6.0.0<6.4.11 | 6.4.11 |
| composer/symfony/validator | <5.4.43 | 5.4.43 |
| composer/symfony/symfony | >=7.0.0<7.1.4 | 7.1.4 |
| composer/symfony/symfony | >=6.0.0<6.4.11 | 6.4.11 |
| composer/symfony/symfony | <5.4.43 | 5.4.43 |
| debian/symfony | <=4.4.19+dfsg-2+deb11u6 | 5.4.23+dfsg-1+deb12u4 6.4.18+dfsg-1 |
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://github.com/symfony/symfony/commit/7d1032bbead9a4229b32fa6ebca32681c80cb76f
- https://github.com/symfony/symfony/security/advisories/GHSA-g3rh-rrhp-jhh9
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2024-50343.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/validator/CVE-2024-50343.yaml
- https://symfony.com/cve-2024-50343
- https://nvd.nist.gov/vuln/detail/CVE-2024-50343
- https://github.com/advisories/GHSA-g3rh-rrhp-jhh9 (Advisory)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-50343
- https://launchpad.net/bugs/cve/CVE-2024-50343
- https://security-tracker.debian.org/tracker/CVE-2024-50343
- https://ubuntu.com/security/CVE-2024-50343
Frequently Asked Questions
What is the severity of CVE-2024-50343?
CVE-2024-50343 has been classified as a moderate severity vulnerability.
How do I fix CVE-2024-50343?
To mitigate CVE-2024-50343, update the symfony/validator and symfony/symfony packages to version 7.1.4, 6.4.11, or 5.4.43.
Which Symfony versions are affected by CVE-2024-50343?
CVE-2024-50343 affects Symfony versions ranging from 5.0.0 to 5.4.43, 6.0.0 to 6.4.11, and 7.0.0 to 7.1.4.
What specific issue does CVE-2024-50343 address?
CVE-2024-50343 addresses a vulnerability in the Validator component that can be exploited using specific regular expression metacharacter patterns.
Is there a specific regex modifier used to resolve CVE-2024-50343?
The resolution for CVE-2024-50343 involves using the 'D' regex modifier to ensure the entire input is matched.
- agent/weakness
- agent/softwarecombine
- agent/first-publish-date
- agent/title
- agent/type
- agent/severity
- agent/author
- collector/nvd-api
- source/NVD
- collector/mitre-cve
- source/MITRE
- collector/nvd-cve
- collector/github-advisory-latest
- source/GitHub
- alias/GHSA-g3rh-rrhp-jhh9
- alias/CVE-2024-50343
- agent/software-canonical-lookup
- agent/last-modified-date
- agent/trending
- collector/github-advisory
- collector/usn-cve
- source/Ubuntu
- agent/references
- agent/source
- agent/description
- agent/tags
- collector/security-tracker-debian
- source/Debian
- agent/event
- package-manager/composer
- package-manager/debian