CVE-2021-41268
Publication date 24 November 2021
Last updated 25 August 2025
Ubuntu priority
Description
Symfony/SecurityBundle is the security system for Symfony, a PHP framework for web and console applications and a set of reusable PHP components. Since the rework of the Remember me cookie in version 5.3.0, the cookie is not invalidated when the user changes their password. Attackers can therefore maintain their access to the account even if the password is changed as long as they have had the chance to login once and get a valid remember me cookie. Starting with version 5.3.12, Symfony makes the password part of the signature by default. In that way, when the password changes, then the cookie is not valid anymore.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| symfony | 22.04 LTS jammy |
Not affected
|
| 20.04 LTS focal |
Not affected
|
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty | Not in release |
Severity score breakdown
CVSS version: CVSS v3.0
Base score
8.8 · High
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
Other references
- https://github.com/symfony/symfony/security/advisories/GHSA-qw36-p97w-vcqr
- https://github.com/symfony/symfony/commit/36a808b857cd3240244f4b224452fb1e70dc6dfc (v5.3.12)
- https://github.com/symfony/symfony/releases/tag/v5.3.12
- https://github.com/symfony/symfony/commit/36a808b857cd3240244f4b224452fb1e70dc6dfc
- https://github.com/symfony/symfony/pull/44243
- https://www.cve.org/CVERecord?id=CVE-2021-41268