Arbitrary file upload in Jenkins
CVE-2023-43497
In Jenkins 2.423 and earlier, LTS 2.414.1 and earlier, processing file uploads using the Stapler web framework creates temporary files in the default system temporary directory with the default permissions for newly created files, potentially allowing attackers with access to the Jenkins controller file system to read and write the files before they are used.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.010 (60.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.010 · change: +0.002
Affected products
- Jenkins
- Jenkins Project — versions 2.424, 2.414.2
Weakness classification (CWE)
References
- www.jenkins.io/security/advisory/2023-09-20/ (vendor-advisory, Vendor Advisory)
- www.openwall.com/lists/oss-security/2023/09/20/5 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2023-43497?
- CVE-2023-43497 is a high-severity vulnerability in Jenkins, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.1/10. Published 2023-09-20.
- How severe is CVE-2023-43497?
- High severity. CVSS v3 base score is 8.1 out of 10.