GHSA-3gv2-29qc-v67mMediumCVSS 6.3

Symfony vulnerable to Session Fixation of CSRF tokens

Published
February 1, 2023
Last Modified
July 12, 2023

🔗 CVE IDs covered (1)

📋 Description

Description

When authenticating users Symfony by default regenerates the session ID upon login, but preserves the rest of session attributes. Because this does not clear CSRF tokens upon login, this might enables same-site attackers to bypass the CSRF protection mechanism by performing an attack similar to a session-fixation.

Resolution

Symfony removes all CSRF tokens from the session on successful login.

The patch for this issue is available here for branch 4.4.

Credits

We would like to thank Marco Squarcina for reporting the issue and Nicolas Grekas for fixing it.

🎯 Affected products10

  • composer/symfony/security-bundle:>= 2.0.0, < 4.4.50
  • composer/symfony/security-bundle:>= 5.0.0, < 5.4.20
  • composer/symfony/security-bundle:>= 6.0.0, < 6.0.20
  • composer/symfony/security-bundle:>= 6.1.0, < 6.1.12
  • composer/symfony/security-bundle:>= 6.2.0, < 6.2.6
  • composer/symfony/symfony:>= 2.0.0, < 4.4.50
  • composer/symfony/symfony:>= 5.0.0, < 5.4.20
  • composer/symfony/symfony:>= 6.0.0, < 6.0.20
  • composer/symfony/symfony:>= 6.1.0, < 6.1.12
  • composer/symfony/symfony:>= 6.2.0, < 6.2.6

🔗 References (9)