CVE-2021-32693 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

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

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8