Auth bypass in Jenkins

CVE-2017-1000400

The Jenkins 2.73.1 and earlier, 2.83 and earlier remote API at /job/(job-name)/api contained information about upstream and downstream projects. This included information about tasks that the current user otherwise has no access to, e.g. due to lack of Item/Read permission. This has been fixed, and the API now only lists upstream and downstream projects that the current user has access to.

Vulnerability class: Broken Access Control

EPSS: 0.008 (53.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2017-1000400?
CVE-2017-1000400 is a medium-severity vulnerability in Jenkins, classified under Missing Authorization. CVSS score: 4.3/10. Published 2018-01-26.
How severe is CVE-2017-1000400?
Medium severity. CVSS v3 base score is 4.3 out of 10.