GHSA-c264-8834-ppj2

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GHSA-c264-8834-ppj2

Summary: CSRF vulnerability in Jenkins Swarm Plugin

Details: Swarm Plugin adds API endpoints to add or remove agent labels. In Swarm Plugin 3.20 and earlier these only require a global Swarm secret to use, and no regular permission check is performed. This allows users with Agent/Create permission to add or remove labels of any agent. Additionally, these API endpoints do not require POST requests, resulting in a cross-site request forgery (CSRF) vulnerability. Swarm Plugin 3.21 requires POST requests and Agent/Configure permission for the affected agent to these endpoints. It no longer uses the global Swarm secret for these API endpoints.

References: https://nvd.nist.gov/vuln/detail/CVE-2020-2192, https://github.com/jenkinsci/swarm-plugin/commit/4d18f98b00e4c84b152d52346fb9ef1a227b1cf7, https://github.com/jenkinsci/swarm-plugin, https://jenkins.io/security/advisory/2020-06-03/#SECURITY-1200, http://www.openwall.com/lists/oss-security/2020/06/03/3