Auth bypass in Jenkins
CVE-2021-21685
Jenkins 2.318 and earlier, LTS 2.303.2 and earlier does not check agent-to-controller access to create parent directories in FilePath#mkdirs.
Vulnerability class: Broken Access Control
EPSS: 0.015 (71.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Jenkins
- Jenkins Project — versions unspecified
Weakness classification (CWE)
References
- jenkinsci-cert@googlegroups.com (x_refsource_CONFIRM, Vendor Advisory)
- jenkinsci-cert@googlegroups.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21685?
- CVE-2021-21685 is a critical-severity vulnerability in Jenkins, classified under Missing Authorization. CVSS score: 9.1/10. Published 2021-11-04.
- How severe is CVE-2021-21685?
- Critical severity. CVSS v3 base score is 9.1 out of 10.