Jenkins 2.274 and earlier, LTS 2.263.1 and earlier allows reading arbitrary files using the file browser for workspaces and archived artifacts by following symlinks.
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
Link | Tags |
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https://www.jenkins.io/security/advisory/2021-01-13/#SECURITY-1452 | vendor advisory |