CVE-2023-26555 Memory corruption in n/a
An out-of-bounds write in the Palisade refclock parser allows attackers with a manipulated GPS receiver to potentially execute code or cause denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-26555?
CVE-2023-26555 is a medium-severity memory corruption vulnerability in Ntp Ntp, published on 11 Apr 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
praecis_parse in ntpd/refclock_palisade.c in NTP 4.2.8p15 has an out-of-bounds write. Any attack method would be complex, e.g., with a manipulated GPS receiver.
Weakness: CWE-787
Which versions are affected by CVE-2023-26555?
It affects 1 product.
Linux distribution packages (7)
ntp SUSE:Linux Enterprise Module for Legacy 15 SP4 | All versions | 4.2.8p17-150000.4.25.1 |
ntp SUSE:Linux Enterprise Module for Legacy 15 SP5 | All versions | 4.2.8p17-150000.4.25.1 |
ntp SUSE:Linux Enterprise Server 12 SP5 | All versions | 4.2.8p17-103.1 |
ntp SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 4.2.8p17-103.1 |
ntp openSUSE:Leap 15.4 | All versions | 4.2.8p17-150000.4.25.1 |
ntp openSUSE:Leap 15.5 | All versions | 4.2.8p17-150000.4.25.1 |
ntp openSUSE:Tumbleweed | All versions | 4.2.8p17-1.1 |
Products include Ntp Ntp.
How do I fix CVE-2023-26555?
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-2023-26555 being exploited?
There is no known exploitation of CVE-2023-26555 in the wild and no public exploit code.
Other vulnerabilities in Ntp Ntp
Sources
Also known as DEBIAN-CVE-2023-26555, GHSA-3vvp-9ghf-fqvw, OESA-2023-1292, SUSE-SU-2023:2608-1, SUSE-SU-2023:2609-1, UBUNTU-CVE-2023-26555 and 1 more.