CVE-2018-6954
medium
CVSS v3
—
CVSS v2
—
VIR risk
5.5
Description
systemd-tmpfiles in systemd through 237 mishandles symlinks present in non-terminal path components, which allows local users to obtain ownership of arbitrary files via vectors involving creation of a directory and a file under that directory, and later replacing that directory with a symlink. This occurs even if the fs.protected_symlinks sysctl is turned on.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2018-6954
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2018-6954.html
Vendor advisory: arch — https://security.archlinux.org/ASA-201901-4
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 240.0-3 | |
| sles | affected | | |
| debian | bookworm | fixed | 238-1 |
| debian | bullseye | fixed | 238-1 |
| debian | forky | fixed | 238-1 |
| debian | sid | fixed | 238-1 |
| debian | trixie | fixed | 238-1 |
References
Verify integrity in audit chain (admin only). AS-IS.