User enumeration In util-linux
Description
(a) mount and (b) umount in util-linux 2.14.1, 2.17.2, and probably other versions allow local users to determine the existence of restricted directories by (1) using the --guess-fstype command-line option or (2) attempting to mount a non-existent device, which generates different error messages depending on whether the directory exists.
Mitigation
Update Impact
Minimal update. May introduce new vulnerabilities or breaking changes.
Ecosystem | Package | Affected version | Patched versions |
|---|---|---|---|
 debian 11 | 2.20.1-5.5 | ||
debian 13 | 2.20.1-5.5 | ||
debian 14 | 2.20.1-5.5 | ||
 rpm rhel6 | 0:2.17.2-12.9.el6 | ||
debian 12 | 2.20.1-5.5 | ||
rpm rhel5 | - | - |
Aliases
1. 2. 3. 4. 5.