CVE-2023-32629 Privilege escalation in Ubuntu Kernel
Local attackers can escalate privileges in Ubuntu kernels due to missing permission checks in overlayfs metadata copying.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-32629?
CVE-2023-32629 is a high-severity vulnerability in Canonical Ubuntu Linux, published on 26 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Local privilege escalation vulnerability in Ubuntu Kernels overlayfs ovl_copy_up_meta_inode_data skip permission checks when calling ovl_do_setxattr on Ubuntu kernels
Weakness: CWE-863
Which versions are affected by CVE-2023-32629?
It affects 1 product.
Products include Canonical Ubuntu Linux.
How do I fix CVE-2023-32629?
Apply the vendor's patch.
Is CVE-2023-32629 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-32629 exists.
Public exploit code: 1 Metasploit module and 5 proofs of concept on GitHub.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as GHSA-5xvw-32xh-2vr5.