CVE-2023-39975 Use after free in n/a
An authenticated user can trigger a double free in MIT Kerberos, potentially causing a denial of service or arbitrary code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-39975?
CVE-2023-39975 is a high-severity use after free vulnerability in Mit Kerberos 5, published on 16 Aug 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
kdc/do_tgs_req.c in MIT Kerberos 5 (aka krb5) 1.21 before 1.21.2 has a double free that is reachable if an authenticated user can trigger an authorization-data handling failure. Incorrect data is copied from one ticket to another.
Weakness: CWE-415
Which versions are affected by CVE-2023-39975?
It affects 1 product.
Linux distribution packages (1)
krb5 openSUSE:Tumbleweed | All versions | 1.21.2-1.1 |
Products include Mit Kerberos 5.
How do I fix CVE-2023-39975?
Upgrade to a fixed version.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2023-39975 being exploited?
There is no known exploitation of CVE-2023-39975 in the wild and no public exploit code.
Other vulnerabilities in Mit Kerberos 5
Sources
Also known as CLSA-2024-1718787475, GHSA-4grv-wgvh-8x82, openSUSE-SU-2024:13527-1.