GHSA-q847-2q57-wmr3
Symfony potential Cross-site Scripting vulnerabilities in CodeExtension filters
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Packagist | symfony/twig-bridge | >= 2.0.0, < 4.4.51 | 4.4.51 |
| Packagist | symfony/twig-bridge | >= 5.0.0, < 5.4.31 | 5.4.31 |
| Packagist | symfony/twig-bridge | >= 6.0.0, < 6.3.8 | 6.3.8 |
| Packagist | symfony/symfony | >= 2.0.0, < 4.4.51 | 4.4.51 |
| Packagist | symfony/symfony | >= 5.0.0, < 5.4.31 | 5.4.31 |
| Packagist | symfony/symfony | >= 6.0.0, < 6.3.8 | 6.3.8 |
Details
As written in the advisory (Markdown source, shown as plain text).
### Description
Some Twig filters in CodeExtension use "is_safe=html" but don't actually ensure their input is safe.
### Resolution
Symfony now escapes the output of the affected filters.
The patch for this issue is available [here](https://github.com/symfony/symfony/commit/9da9a145ce57e4585031ad4bee37c497353eec7c) for branch 4.4.
### Credits
We would like to thank Pierre Rudloff for reporting the issue and to Nicolas Grekas for providing the fix.
References
External links from the advisory. They lead to third-party sites.
- https://github.com/symfony/symfony/security/advisories/GHSA-q847-2q57-wmr3
- https://nvd.nist.gov/vuln/detail/CVE-2023-46734
- https://github.com/symfony/symfony/commit/5d095d5feb1322b16450284a04d6bb48d1198f54
- https://github.com/symfony/symfony/commit/9da9a145ce57e4585031ad4bee37c497353eec7c
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2023-46734.yaml
- https://github.com/symfony/symfony
- https://lists.debian.org/debian-lts-announce/2023/11/msg00019.html
- https://symfony.com/cve-2023-46734