CVE-2021-23240
low
CVSS v3
—
CVSS v2
—
VIR risk
2.5
Description
selinux_edit_copy_tfiles in sudoedit in Sudo before 1.9.5 allows a local unprivileged user to gain file ownership and escalate privileges by replacing a temporary file with a symlink to an arbitrary file target. This affects SELinux RBAC support in permissive mode. Machines without SELinux are not vulnerable.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-23240
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2021:1723
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-23240.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 1.9.5.p1-1 | |
| sles | affected | | |
| rocky | 8 | fixed | |
| debian | bookworm | fixed | 1.9.5-1 |
| debian | bullseye | fixed | 1.9.5-1 |
| debian | forky | fixed | 1.9.5-1 |
| debian | sid | fixed | 1.9.5-1 |
| debian | trixie | fixed | 1.9.5-1 |
References
Verify integrity in audit chain (admin only). AS-IS.