CVE-2023-5568 Samba: heap buffer overflow with freshness tokens in the heimdal kdc
A remote authenticated attacker can cause a denial of service via a heap buffer overflow in the Samba Heimdal KDC.
- 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-2023-5568?
CVE-2023-5568 is a medium-severity memory corruption vulnerability in Samba Samba, published on 24 Oct 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A heap-based Buffer Overflow flaw was discovered in Samba. It could allow a remote, authenticated attacker to exploit this vulnerability to cause a denial of service.
Which versions are affected by CVE-2023-5568?
It affects 1 product.
Linux distribution packages (1)
samba openSUSE:Tumbleweed | All versions | 4.19.2+git.322.7e9201cef5-1.1 |
Products include Samba Samba.
How do I fix CVE-2023-5568?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2023-5568 being exploited?
There is no known exploitation of CVE-2023-5568 in the wild and no public exploit code.
Other vulnerabilities in Samba Samba
Sources
Also known as AZL-31745, AZL-37029, DEBIAN-CVE-2023-5568, GHSA-x3c8-vcr7-5m4v, ROOT-OS-ALPINE-318-CVE-2023-5568, ROOT-OS-ALPINE-319-CVE-2023-5568 and 1 more.