jenkinsci/jenkins · Security
Lack of type validation in agent related REST API in Jenkins
- GHSA ID
- GHSA-pvwx-3jx5-24r2
- CVE ID
- CVE-2021-21639
- Severity
- medium
- Published
- Updated
- CVSS
- 4.3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CVSS v3
- 4.3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Description
Jenkins 2.286 and earlier, LTS 2.277.1 and earlier does not validate the type of object created after loading the data submitted to the config.xml REST API endpoint of a node.
This allows attackers with Computer/Configure permission to replace a node with one of a different type.
Jenkins 2.287, LTS 2.277.2 validates the type of object created and rejects objects of unexpected types.
CWEs
- CWE-20 · Improper Input Validation
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-21639 ↗
- https://www.jenkins.io/security/advisory/2021-04-07/#SECURITY-1721 ↗
- http://www.openwall.com/lists/oss-security/2021/04/07/2 ↗
- https://github.com/jenkinsci/jenkins/commit/84210baed0c866bdee3e59271f98a767a14a5509 ↗
- https://github.com/advisories/GHSA-pvwx-3jx5-24r2 ↗