medium6.5
CVE-2021-21683
Path traversal vulnerability on Windows in Jenkins
Impact
The file browser for workspaces, archived artifacts, and `userContent/` in Jenkins 2.314 and earlier, LTS 2.303.1 and earlier may interpret some paths to files as absolute on Windows. This results in a path traversal vulnerability allowing attackers with Overall/Read permission (Windows controller) or Job/Workspace permission (Windows agents) to obtain the contents of arbitrary files.\n\nThe file browser in Jenkins 2.315, LTS 2.303.2 refuses to serve files that would be considered absolute paths.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| maven | org.jenkins-ci.main:jenkins-core | <= 2.303.1 | 2.303.2 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Jenkins | Jenkins | through 2.303.1 through 2.314 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- http://www.openwall.com/lists/oss-security/2021/10/06/1
- https://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2481
- https://github.com/advisories/GHSA-4pw5-r58h-fv24
- https://nvd.nist.gov/vuln/detail/CVE-2021-21683
- https://github.com/jenkinsci/jenkins/commit/3f679fc12d073676a4441d3fa8b5fff34c07662f