CVE Vulnerabilities

CVE-2016-8638

Session Fixation

Published: Jul 12, 2017 | Modified: Nov 07, 2023
CVSS 3.x
9.1
CRITICAL
Source:
NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CVSS 2.x
6.4 MEDIUM
AV:N/AC:L/Au:N/C:P/I:N/A:P
RedHat/V2
6.4 IMPORTANT
AV:N/AC:L/Au:N/C:P/I:N/A:P
RedHat/V3
8.2 IMPORTANT
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
Ubuntu

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.

Weakness

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.

Affected Software

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 *

Extended Description

Such a scenario is commonly observed when:

Potential Mitigations

References