Time-of-check Time-of-use (TOCTOU) Race Condition in Jenkins

Due to a time-of-check to time-of-use TOCTOU race condition, the file browser for workspaces, archived artifacts, and $JENKINSHOME/userContent/ follows symbolic links to locations outside the directory being browsed in Jenkins 2.275 and LTS 2.263.2. This allows attackers with Job/Workspace...

Workspace browser allowed accessing files outside the workspace

The file browser for workspaces, archived artifacts, and $JENKINSHOME/userContent/ followed symbolic links to locations outside the directory being browsed. While builds typically have access to the file system outside the workspace allocated by Jenkins, this should not extend to beyond the...