CVE catalog
CVE-2023-26554
UBUNTU-CVE-2023-26554
- Severity
- Medium · CVSS 4.4
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.64% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | ntp | 11 | 1:4.2.8p15+dfsg-1 | vulnerable |
| Debian | ntp | 11 | 1:4.2.8p15+dfsg-2-hurd.1 | vulnerable |
| Debian | ntp | 11 | 1:4.2.8p15+dfsg-2~1.2.1+dfsg1-7+hurd.1 | vulnerable |
| Debian | ntp | 11 | 1:4.2.8p15+dfsg-2~1.2.1+dfsg1-8+hurd.1 | vulnerable |
| Debian | ntp | 11 | 1:4.2.8p15+dfsg-2~1.2.2+dfsg1-2+hurd.1 | vulnerable |
| Debian | ntp | 11 | 1:4.2.8p15+dfsg-2~hurd.1 | vulnerable |
| Ubuntu | ntp | pro | 1:4.2.8p12+dfsg-3ubuntu2 | vulnerable |
| Ubuntu | ntp | pro | 1:4.2.8p12+dfsg-3ubuntu3 | vulnerable |
| Ubuntu | ntp | pro | 1:4.2.8p12+dfsg-3ubuntu4 | vulnerable |
| Ubuntu | ntp | pro | 1:4.2.8p12+dfsg-3ubuntu4.20.04.1 | vulnerable |
| Ubuntu | ntp | pro | 1:4.2.8p12+dfsg-3ubuntu4.20.04.1+esm1 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.6.p5+dfsg-3ubuntu8 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.6.p5+dfsg-3ubuntu8.1 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.6.p5+dfsg-3ubuntu9 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu1 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu2 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu3 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu4 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.1 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.2 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.3 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.4 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.5 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.6 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.7 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.8 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.9 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.10 | vulnerable |
| Ubuntu | ntp | 22.04 | 1:4.2.8p12+dfsg-3ubuntu6 | vulnerable |
| Ubuntu | ntp | 22.04 | 1:4.2.8p15+dfsg-1ubuntu1 | vulnerable |
| Ubuntu | ntp | 22.04 | 1:4.2.8p15+dfsg-1ubuntu2 | vulnerable |
Fixed-version evidence
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.