Vulnerability · Published Nov 10, 2023 · Assigned by GitHub_M
CVE-2023-46733Symfony possible session fixation vulnerability
Medium 6.5
In plain English
A medium-severity session fixation in symfony from symfony. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 53% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | symfony | 5.4.23+dfsg-1+deb12u1 | DEBIAN-CVE-2023-46733 |
| Debian:13 | symfony | 5.4.31+dfsg-1 | DEBIAN-CVE-2023-46733 |
| Debian:14 | symfony | 5.4.31+dfsg-1 | DEBIAN-CVE-2023-46733 |
| Packagist | symfony/security-http | 6.3.8 | GHSA-m2wj-r6g3-fxfx |
| Packagist | symfony/security-http | 5.4.31 | GHSA-m2wj-r6g3-fxfx |
| Packagist | symfony/symfony | 6.3.8 | GHSA-m2wj-r6g3-fxfx |
| Packagist | symfony/symfony | 5.4.31 | GHSA-m2wj-r6g3-fxfx |
Affected products (as reported)
Weakness: CWE-384 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N