CVE-2021-32693
Description
Symfony is a PHP framework for web and console applications and a set of reusable PHP components. A vulnerability related to firewall authentication is in Symfony starting with version 5.3.0 and prior to 5.3.2. When an application defines multiple firewalls, the token authenticated by one of the firewalls was available for all other firewalls. This could be abused when the application defines different providers for each part of the application, in such a situation, a user authenticated on a part of the application could be considered authenticated on the rest of the application. Starting in version 5.3.2, a patch ensures that the authenticated token is only available for the firewall that generates it.
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-http | >=5.3.0,<5.3.2 | 5.3.2 |
| Packagist | symfony/symfony | >=5.3.0,<5.3.2 | 5.3.2 |
References
- https://github.com/symfony/symfony/security/advisories/GHSA-rfcf-m67m-jcrq
- https://nvd.nist.gov/vuln/detail/CVE-2021-32693
- https://github.com/symfony/security-http/commit/6bf4c31219773a558b019ee12e54572174ff8129
- https://github.com/symfony/symfony/commit/3084764ad82f29dbb025df19978b9cbc3ab34728
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2021-32693.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2021-32693.yaml
- https://github.com/symfony/security-http
- https://symfony.com/blog/cve-2021-32693-authentication-granted-to-all-firewalls-instead-of-just-one
- https://symfony.com/cve-2021-32693
- https://security-tracker.debian.org/tracker/CVE-2021-32693
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.