CVE-2024-51754: Unguarded calls to __toString() when nesting an object into an array in Twig
First published: Wed Nov 06 2024(Updated: )
### Description In a sandbox, an attacker can call `__toString()` on an object even if the `__toString()` method is not allowed by the security policy when the object is part of an array or an argument list (arguments to a function or a filter for instance). ### Resolution The sandbox mode now checks the `__toString()` method call on all objects. The patch for this issue is available [here](https://github.com/twigphp/twig/commit/407647c1036518c90b0188bb31b55f19ca84c328) for branch 3.x. ### Credits We would like to thank Jamie Schouten for reporting the issue and Fabien Potencier for providing the fix.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/twig/twig | >=3.12.0<3.14.1 | 3.14.1 |
| composer/twig/twig | >=1.0.0<3.11.2 | 3.11.2 |
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Reference Links
- https://github.com/twigphp/Twig/security/advisories/GHSA-6377-hfv9-hqf6
- https://github.com/twigphp/Twig/commit/2bb8c2460a2c519c498df9b643d5277117155a73
- https://nvd.nist.gov/vuln/detail/CVE-2024-51754
- https://github.com/FriendsOfPHP/security-advisories/blob/master/twig/twig/CVE-2024-51754.yaml
- https://symfony.com/blog/unguarded-calls-to-__tostring-when-nesting-an-object-into-an-array
- https://github.com/advisories/GHSA-6377-hfv9-hqf6 (Advisory)
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