A vulnerability in ipsilon 2.0 before 2.0.2, 1.2 before 1.2.1, 1.1 before 1.1.2, and 1.0 before 1.0.3 was found that allows attacker to log out active sessions of other users. This issue is related to how it tracks sessions, and allows an unauthenticated attacker to view and terminate active sessions from other users. It is also called a SAML2 multi-session vulnerability.
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.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ipsilon | Ipsilon_project | 1.0.0 (including) | 1.0.0 (including) |
| Ipsilon | Ipsilon_project | 1.0.1 (including) | 1.0.1 (including) |
| Ipsilon | Ipsilon_project | 1.0.2 (including) | 1.0.2 (including) |
| Ipsilon | Ipsilon_project | 1.1.0 (including) | 1.1.0 (including) |
| Ipsilon | Ipsilon_project | 1.1.1 (including) | 1.1.1 (including) |
| Ipsilon | Ipsilon_project | 1.2.0 (including) | 1.2.0 (including) |
| Ipsilon | Ipsilon_project | 2.0.0 (including) | 2.0.0 (including) |
| Ipsilon | Ipsilon_project | 2.0.1 (including) | 2.0.1 (including) |
| Red Hat Enterprise Linux 7 | RedHat | ipsilon-0:1.0.0-13.el7_3 | * |
Such a scenario is commonly observed when:
In the generic exploit of session fixation vulnerabilities, an attacker creates a new session on a web application and records the associated session identifier. The attacker then causes the victim to associate, and possibly authenticate, against the server using that session identifier, giving the attacker access to the user’s account through the active session.