CVE-2021-41268
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 0 |
| sid | Fixed | 0 |
| forky | Fixed | 0 |
| bullseye | Fixed | 0 |
| bookworm | Fixed | 0 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Packagist | symfony/security-bundle | >=5.3.0,<5.3.12 | 5.3.12 |
| Packagist | symfony/symfony | >=5.3.0,<5.3.12 | 5.3.12 |
References
- https://github.com/symfony/symfony/security/advisories/GHSA-qw36-p97w-vcqr
- https://nvd.nist.gov/vuln/detail/CVE-2021-41268
- https://github.com/symfony/symfony/pull/44243
- https://github.com/symfony/symfony/commit/36a808b857cd3240244f4b224452fb1e70dc6dfc
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-bundle/CVE-2021-41268.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2021-41268.yaml
- https://github.com/symfony/symfony
- https://github.com/symfony/symfony/releases/tag/v5.3.12
- https://symfony.com/cve-2021-41268
- https://security-tracker.debian.org/tracker/CVE-2021-41268
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.