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.

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

EPSS: 0.010 (58.4th percentile) — read the EPSS interpretation.

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.

Affected products

Jenkins Team_foundation_server
Jenkins Project Team Foundation Server Plugin — versions unspecified, next of 5.157.1

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

jenkinsci-cert@googlegroups.com (x_refsource_CONFIRM)
jenkinsci-cert@googlegroups.com (mailing-list, x_refsource_MLIST, 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.