Path Traversal in Jenkins
CVE-2021-21683
The file browser in Jenkins 2.314 and earlier, LTS 2.303.1 and earlier may interpret some paths to files as absolute on Windows, resulting in a path traversal vulnerability allowing attackers with Overall/Read permission (Windows controller) or Job/Workspace permission (Windows agents) to obtain the contents of arbitrary files.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.022 (81.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000
Affected products
- Jenkins
- Jenkins Project — versions unspecified
- Microsoft Windows
Weakness classification (CWE)
References
- www.jenkins.io/security/advisory/2021-10-06/ (Vendor Advisory)
- www.openwall.com/lists/oss-security/2021/10/06/1 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21683?
- CVE-2021-21683 is a medium-severity vulnerability in Jenkins, classified under Path Traversal. CVSS score: 6.5/10. Published 2021-10-06.
- How severe is CVE-2021-21683?
- Medium severity. CVSS v3 base score is 6.5 out of 10.