CVE-2023-26553 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-2023-26553?
CVE-2023-26553 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 copying the trailing number. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.
Weakness: CWE-787
Which versions are affected by CVE-2023-26553?
It affects 1 product.
Products include Ntp Ntp.
How do I fix CVE-2023-26553?
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-2023-26553 being exploited?
There is no known exploitation of CVE-2023-26553 in the wild and no public exploit code.
Other vulnerabilities in Ntp Ntp
Sources
Also known as DEBIAN-CVE-2023-26553, GHSA-3j84-rjwj-29h2, UBUNTU-CVE-2023-26553.