CVE-2023-27320

Publication date 28 February 2023

Last updated 26 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.2 · High

Score breakdown

Description

Sudo before 1.9.13p2 has a double free in the per-command chroot feature.

Read the notes from the security team

Status

Package Ubuntu Release Status
sudo 23.04 lunar
Fixed 1.9.13p1-1ubuntu2
22.10 kinetic
Fixed 1.9.11p3-1ubuntu1.2
22.04 LTS jammy
Fixed 1.9.9-1ubuntu2.3
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected

Notes

alexmurray

CHROOT support was only added in 1.9.3, and this issue only affects sudo versions 1.9.8 through to 1.9.13p1

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
sudo

Severity score breakdown

Parameter Value
Base score 7.2 · High
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

Related Ubuntu Security Notices (USN)

Other references