AIKIDO-2026-945748
uucore is vulnerable to Link Following
28
Low Risk
This Affects:
uucoreTL;DR
The Linux fast path shared by recursive chown and chgrp uses a path test that follows symlinks again, which contradicts default -P handling that does not dereference them. A command line symlink to a directory is opened following the link, so ownership or group changes apply to the target directory instead of the symlink. The fix branches on the already obtained metadata instead of re-resolving the path.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you run recursive chown or chgrp on a command line symlink to a directory under default -P handling.
Background info
uucore is vulnerable to Link Following in versions 0.0.1 - 0.9.0.
How to fix this
Upgrade the uucore library to the patch version.
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