# CVE-2023-46733: symfony: Symfony is a PHP framework for web and console applications and a set of reusable PHP components

CVE-2023-46733 is fixed in symfony on 1 platform, first by DEBIAN-CVE-2023-46733, released November 10, 2023. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2023-46733
- Priority: Routine
- CVSS: 6.5 (medium)
- EPSS: 0.0069
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Nov 10, 2023

## Description

Symfony is a PHP framework for web and console applications and a set of reusable PHP components. Starting in versions 5.4.21 and 6.2.7 and prior to versions 5.4.31 and 6.3.8, `SessionStrategyListener` does not migrate the session after every successful login. It does so only in case the logged in user changes by means of checking the user identifier. In some use cases, the user identifier doesn't change between the verification phase and the successful login, while the token itself changes from one type (partially-authenticated) to another (fully-authenticated). When this happens, the session id should be regenerated to prevent possible session fixations, which is not the case at the moment. As of versions 5.4.31 and 6.3.8, Symfony now checks the type of the token in addition to the user identifier before deciding whether the session id should be regenerated.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | symfony Debian 12.15 (bookworm) | 5.4.23+dfsg-1+deb12u1 | [DEBIAN-CVE-2023-46733](https://patchblox.com/security/data/fix/linux/debian-cve-2023-46733.md) | Nov 10, 2023 |
| Linux | symfony Debian 13.5 (trixie) | 5.4.31+dfsg-1 | [DEBIAN-CVE-2023-46733](https://patchblox.com/security/data/fix/linux/debian-cve-2023-46733.md) | Nov 10, 2023 |
| Linux | symfony Debian 14 | 5.4.31+dfsg-1 | [DEBIAN-CVE-2023-46733](https://patchblox.com/security/data/fix/linux/debian-cve-2023-46733.md) | Nov 10, 2023 |

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