CVE-2023-26554 Memory corruption in n/a
An out-of-bounds write in the NTP client utility allows attackers to potentially execute code or cause denial of service via crafted input.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-26554?
CVE-2023-26554 is a medium-severity memory corruption vulnerability in Ntp Ntp, published on 11 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write when adding a '\0' character. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.
Weakness: CWE-787
Which versions are affected by CVE-2023-26554?
It affects 1 product.
Products include Ntp Ntp.
How do I fix CVE-2023-26554?
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-2023-26554 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-26554 exists.
Other vulnerabilities in Ntp Ntp
Sources
Also known as DEBIAN-CVE-2023-26554, GHSA-p43r-r5fw-2w5x, UBUNTU-CVE-2023-26554.