Session Fixation in Symfony security-bundle

1) Session Fixation

EUVDB-ID: #VU58369

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-41268

CWE-ID: CWE-384 - Session Fixation

Exploit availability: No

Description

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to the cookie is not invalidated anymore when the user changes its password. A remote authenticated attacker can maintain their access to the account even if the password is changed.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

security-bundle: 5.3.0 - 5.3.11

External links

http://github.com/symfony/symfony/security/advisories/GHSA-qw36-p97w-vcqr
http://github.com/symfony/symfony/releases/tag/v5.3.12
http://github.com/symfony/symfony/commit/36a808b857cd3240244f4b224452fb1e70dc6dfc
http://github.com/symfony/symfony/pull/44243

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.