AIKIDO-2026-142633
uu_mv is vulnerable to Improper Preservation of Permissions
42
Medium Risk
This Affects:
uu_mvTL;DR
The mv utility falls back to a copy-and-delete routine when moving files across filesystem boundaries. In that fallback it recreates the destination using the calling process's UID and GID instead of restoring the source file's ownership. Files moved by a privileged user therefore silently change owner, which can expose their contents to or lock them away from the intended owner. The fix restores the original ownership on the destination after the cross-device copy.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you move files across filesystem boundaries with mv, especially as a privileged user.
Background info
uu_mv is vulnerable to Improper Preservation of Permissions in versions 0.0.1 - 0.8.0.
How to fix this
Upgrade the uu_mv library to the patch version.
Are You Affected?
Connect your repositories to instantly see whether vulnerable or malicious packages exist in your codebase.
Free. No credit card required.
I consent to receiving marketing communications based on Aikido’s Privacy Policy.
SOC 2Compliant
ISO 27001Compliant