Authentication bypass in Octobercms

Vulnerability Description

octobercms in a CMS platform based on the Laravel PHP Framework. In affected versions of the october/system package an attacker can exploit this vulnerability to bypass authentication and takeover of and user account on an October CMS server. The vulnerability is exploitable by unauthenticated users via a specially crafted request. This only affects frontend users and the attacker must obtain a Laravel secret key for cookie encryption and signing in order to exploit this vulnerability. The issue has been patched in Build 472 and v1.1.5.

References

• https://github.com/octobercms/library/commit/016a297b1bec55d2e53bc889458ed2cb5c3e9374
• https://github.com/octobercms/library/commit/5bd1a28140b825baebe6becd4f7562299d3de3b9
• https://github.com/octobercms/october/security/advisories/GHSA-h76r-vgf3-j6w5