CVE-2023-22809

Publication date 18 January 2023

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.8 · High

Score breakdown

In Sudo before 1.9.12p2, the sudoedit (aka -e) feature mishandles extra arguments passed in the user-provided environment variables (SUDO_EDITOR, VISUAL, and EDITOR), allowing a local attacker to append arbitrary entries to the list of files to process. This can lead to privilege escalation. Affected versions are 1.8.0 through 1.9.12.p1. The problem exists because a user-specified editor may contain a ”--” argument that defeats a protection mechanism, e.g., an EDITOR=‘vim -- /path/to/extra/file’ value.

Status

Package Ubuntu Release Status
sudo 23.04 lunar
Fixed 1.9.11p3-1ubuntu3
22.10 kinetic
Fixed 1.9.11p3-1ubuntu1.1
22.04 LTS jammy
Fixed 1.9.9-1ubuntu2.2
20.04 LTS focal
Fixed 1.8.31-1ubuntu1.4
18.04 LTS bionic
Fixed 1.8.21p2-3ubuntu1.5
16.04 LTS xenial
14.04 LTS trusty

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

References

Related Ubuntu Security Notices (USN)

Other references