CVE-2024-50340 Ability to change environment from query in symfony/runtime
Attackers can alter application environment or debug mode via crafted query strings when specific PHP directives are enabled, potentially exposing sensitive configurations.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2024-50340?
CVE-2024-50340 is a high-severity vulnerability in symfony, published on 6 Nov 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
symfony/runtime is a module for the Symphony PHP framework which enables decoupling PHP applications from global state. When the `register_argv_argc` php directive is set to `on` , and users call any URL with a special crafted query string, they are able to change the environment or debug mode used by the kernel when handling the request. As of versions 5.4.46, 6.4.14, and 7.1.7 the `SymfonyRuntime` now ignores the `argv` values for non-SAPI PHP runtimes. All users are advised to upgrade. There are no known workarounds for this vulnerability.
Weakness: CWE-74
Which versions are affected by CVE-2024-50340?
12 open source packages ship an affected version, including symfony/runtime and symfony/symfony.
| Package | Affected | Fixed in |
|---|---|---|
symfony/runtime Packagist | From 5.3.0 | 5.4.46 |
symfony/runtime Packagist | From 5.3.0 | 5.4.46 |
symfony/runtime Packagist | From 6.0.0 | 6.4.14 |
symfony/runtime Packagist | From 6.0.0 | 6.4.14 |
symfony/runtime Packagist | From 7.0.0 | 7.1.7 |
symfony/runtime Packagist | From 7.0.0 | 7.1.7 |
6 more packages
symfony/symfony Packagist | From 5.3.0 | 5.4.46 |
symfony/symfony Packagist | From 5.3.0 | 5.4.46 |
symfony/symfony Packagist | From 6.0.0 | 6.4.14 |
symfony/symfony Packagist | From 6.0.0 | 6.4.14 |
symfony/symfony Packagist | From 7.0.0 | 7.1.7 |
symfony/symfony Packagist | From 7.0.0 | 7.1.7 |
How do I fix CVE-2024-50340?
Upgrade symfony/runtime to a fixed version for your release line: 5.4.46, 6.4.14 or 7.1.7.
Is CVE-2024-50340 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-50340 exists.
Public exploit code: 1 Nuclei template and 1 proofs of concept on GitHub.
Sources
Also known as DEBIAN-CVE-2024-50340, GHSA-x8vp-gf4q-mw5j, UBUNTU-CVE-2024-50340.