Session fixation vulnerability in Jenkins

2022-05-2419:06:36

Google

osv.dev

jenkins

session fixation

vulnerability

administrator access

social engineering

mitigation

AI Score

7.5

Confidence

High

EPSS

0.003

Percentile

69.8%

JSON

Jenkins 2.299 and earlier, LTS 2.289.1 and earlier does not invalidate the previous session on login. This allows attackers to use social engineering techniques to gain administrator access to Jenkins.

This vulnerability was introduced in Jenkins 2.266 and LTS 2.277.1.

Jenkins 2.300, LTS 2.289.2 invalidates the previous session on login.

In case of problems, administrators can choose a different implementation by setting the Java system property hudson.security.SecurityRealm.sessionFixationProtectionMode to 2, or disable the fix entirely by setting that system property to 0.