CVE-2023-5536 Privilege escalation in Ubuntu Server

What is CVE-2023-5536?

CVE-2023-5536 is a medium-severity vulnerability in Canonical Ubuntu Linux, published on 12 Dec 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

A feature in LXD (LP#1829071), affects the default configuration of Ubuntu Server which allows privileged users in the lxd group to escalate their privilege to root without requiring a sudo password.

Weakness: CWE-276

Which versions are affected by CVE-2023-5536?

It affects 1 product.

Products include Canonical Ubuntu Linux.

How do I fix CVE-2023-5536?

No fix has been published for CVE-2023-5536 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-5536 being exploited?

There is no known exploitation of CVE-2023-5536 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-7w5c-q3c8-5c62, UBUNTU-CVE-2023-5536.