Auth bypass in Jenkins Team Foundation Server
CVE-2021-21637
A missing permission check in Jenkins Team Foundation Server Plugin 5.157.1 and earlier allows attackers with Overall/Read permission to connect to an attacker-specified URL using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.
Vulnerability class: Broken Access Control
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: 0.010 (60.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Jenkins Team Foundation Server
- Jenkins Project Team Foundation Server Plugin — versions unspecified, next of 5.157.1
Weakness classification (CWE)
References
- www.jenkins.io/security/advisory/2021-03-30/
- www.openwall.com/lists/oss-security/2021/03/30/1 (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-21637?
- CVE-2021-21637 is a medium-severity vulnerability in Jenkins Team Foundation Server, classified under Missing Authorization. CVSS score: 6.5/10. Published 2021-03-30.
- How severe is CVE-2021-21637?
- Medium severity. CVSS v3 base score is 6.5 out of 10.