Auth bypass in Jenkins
CVE-2023-27899
Jenkins 2.393 and earlier, LTS 2.375.3 and earlier creates a temporary file in the default temporary directory with the default permissions for newly created files when uploading a plugin for installation, potentially allowing attackers with access to the Jenkins controller file system to read and write the file before it is used, potentially resulting in arbitrary code execution.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (12.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 12.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Jenkins
- Jenkins Project — versions 2.394, 2.375.4, 2.387.1
Weakness classification (CWE)
References
- www.jenkins.io/security/advisory/2023-03-08/ (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2023-27899?
- CVE-2023-27899 is a high-severity vulnerability in Jenkins, classified under Incorrect Authorization. CVSS score: 7.0/10. Published 2023-03-10.
- How severe is CVE-2023-27899?
- High severity. CVSS v3 base score is 7.0 out of 10.