CVE-2023-27320

Publication date 28 February 2023

Last updated 26 August 2025

Ubuntu priority

Why this priority?

Cvss 3 Severity Score

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

Show unmaintained releases

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	Upstream: 87ce692

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)

USN-5908-1
Sudo vulnerability
2 March 2023

Other references