CVE-2021-3156 · netVigilance record NV22-0305
Sudo Heap-Based Buffer Overflow
past due
What to do
Apply updates per vendor instructions.
CISA deadline 2022-04-27 · passed 4 years 4 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
What happened
Sudo contains an off-by-one error that can result in a heap-based buffer overflow, which allows for privilege escalation.
Who is affected
Sudo Sudo. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Weakness class: CWE-122, CWE-193.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 4 years 4 months ago
Sources
- NVD entry for CVE-2021-3156 nvd.nist.gov/vuln/detail/CVE-2021-3156
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2021-3156