CVE Details

Release Date:2021-01-26


Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character.

See more information about CVE-2021-3156 from MITRE CVE dictionary and NIST NVD

CVSS v3.0 metrics

NOTE: The following CVSS v3.0 metrics and score provided are preliminary and subject to review.

Base Score: 7.8 Base Metrics: AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Access Vector: Local network Attack Complexity: Low
Privileges Required: Low User Interaction: None
Scope: Unchanged Confidentiality Impact: High
Integrity Impact: High Availability Impact: High

Errata information

PlatformErrataRelease Date
Oracle Linux version 6 (sudo)ELSA-2021-91692021-04-15
Oracle Linux version 7 (sudo)ELSA-2021-02212021-01-27
Oracle Linux version 8 (sudo)ELSA-2021-02182021-01-27
Oracle VM version 3 (sudo)OVMSA-2021-00122021-04-27
Oracle VM version 3.4 (sudo)OVMSA-2021-00032021-01-27

This page is generated automatically and has not been checked for errors or omissions. For clarification or corrections please contact the Oracle Linux ULN team