Session Fixation in October CMS - CVE-2021-3311
Published: February 5, 2021 / Updated: March 8, 2021
Vulnerability identifier: #VU50409
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-3311
CWE-ID: CWE-384
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: OctoberCMS
Affected software:
October CMS
October CMS
Detailed vulnerability description
The vulnerability allows a remote attacker to impersonate CMS users.
The vulnerability exists due to October CMS does not invalidate old session identifiers after user logout. A remote attacker with knowledge of any previous session identifier can reuse it by bypass authentication processed and gain unauthorized access to the application.
How to mitigate CVE-2021-3311
Install update from vendor's website.