CVE-2023-34323 xenstored: A transaction conflict can crash C Xenstored
A transaction conflict in C Xenstored can cause a crash due to an assertion failure when quota accounting becomes temporarily negative.
- 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-2023-34323?
CVE-2023-34323 is a medium-severity vulnerability in Xen Xen, published on 5 Jan 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
When a transaction is committed, C Xenstored will first check the quota is correct before attempting to commit any nodes. It would be possible that accounting is temporarily negative if a node has been removed outside of the transaction.
Unfortunately, some versions of C Xenstored are assuming that the quota cannot be negative and are using assert() to confirm it. This will lead to C Xenstored crash when tools are built without -DNDEBUG (this is the default).
Weakness: CWE-476
Which versions are affected by CVE-2023-34323?
It affects 1 product.
Products include Xen Xen.
How do I fix CVE-2023-34323?
Apply the vendor's patch.
Is CVE-2023-34323 being exploited?
There is no known exploitation of CVE-2023-34323 in the wild and no public exploit code.
Other vulnerabilities in Xen Xen
Sources
Also known as ALPINE-CVE-2023-34323, DEBIAN-CVE-2023-34323, GHSA-85fq-cwc3-mp4q, UBUNTU-CVE-2023-34323.