CVE-2021-32693
Publication date 17 June 2021
Last updated 25 August 2025
Ubuntu priority
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.
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/commit/3084764ad82f29dbb025df19978b9cbc3ab34728
- https://github.com/symfony/symfony/security/advisories/GHSA-rfcf-m67m-jcrq
- https://github.com/symfony/security-http/commit/6bf4c31219773a558b019ee12e54572174ff8129
- https://symfony.com/blog/cve-2021-32693-authentication-granted-to-all-firewalls-instead-of-just-one
- https://www.cve.org/CVERecord?id=CVE-2021-32693