Session Fixation in Jenkins and Jenkins LTS - CVE-2021-21671
Published: July 1, 2021
Vulnerability identifier: #VU54492
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2021-21671
CWE-ID: CWE-384
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Jenkins
Affected software:
Jenkins
Jenkins LTS
Jenkins
Jenkins LTS
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to the affected product does not invalidate the existing session on login. A remote attacker can use social engineering techniques to gain administrator access to Jenkins.
How to mitigate CVE-2021-21671
Install updates from vendor's website.