CVE-2021-3156
critical
KEV
CVSS v3
—
CVSS v2
—
VIR risk
10.0
Description
Sudo contains an off-by-one error that can result in a heap-based buffer overflow, which allows for privilege escalation.
CISA KEV
- Vendor
- Sudo
- Product
- Sudo
- Due date
- 2022-04-27
Predictions
Exploit likelihood
99%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: cisa-kev — https://nvd.nist.gov/vuln/detail/CVE-2021-3156
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-3156
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-3156.html
Vendor advisory: arch — https://security.archlinux.org/ASA-202101-25
Exploits
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 1.9.5.p2-1 | |
| sles | affected | | |
| debian | bookworm | fixed | 1.9.5p1-1.1 |
| debian | bullseye | fixed | 1.9.5p1-1.1 |
| debian | forky | fixed | 1.9.5p1-1.1 |
| debian | sid | fixed | 1.9.5p1-1.1 |
| debian | trixie | fixed | 1.9.5p1-1.1 |
References
Verify integrity in audit chain (admin only). AS-IS.