Lack of data validation - Path Traversal In github.com/sylabs/singularity/v4
Description
Singluarity: Incorrect path matching for 'limit container paths' directive
Impact
The limit container paths directive in singularity.conf is intended to allow a system administrator limit the paths from which containers can be run, under setuid mode. Due to incorrect matching of a path string, sibling directories with similar names may incorrectly be allowed.
For example, the configuration:
limit container paths = /data/safe
Will also allow containers in /data/safe-but-unsafe to be run.
Patches
This issue is patched in SingularityCE 4.4.2 and SingularityPRO 4.3.9 / 4.1.14
Workarounds
If you do not use the limit container paths functionality, then this issue does not affect your installation.
If you do use the limit container paths functionality then you must update. Please also review the documented limitations when user namespaces are enabled [1].
Mitigation
Update Impact
Minimal update. May introduce new vulnerabilities or breaking changes.
Ecosystem | Package | Affected version | Patched versions |
|---|---|---|---|
 go | 4.4.2 | ||
go | - |
Aliases
References