Pi-hole 5.0, 5.1, and 5.1.1 allows Session Fixation. The application does not generate a new session cookie after the user is logged in. A malicious user is able to create a new session cookie value and inject it to a victim. After the victim logs in, the injected cookie becomes valid, giving the attacker access to the user's account through the active session.
Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions.
| Link | Tags |
|---|---|
| https://discourse.pi-hole.net/c/announcements/5 | release notes vendor advisory |
| https://n4nj0.github.io/advisories/pi-hole-multiple-vulnerabilities-i/ | third party advisory exploit |