CVE-2023-26551
MEDIUMCVSS 5.6/10EPSS 0.67%
Last modified
CVE-2023-26551 is a medium-severity vulnerability rated 5.6/10 on the CVSS scale. mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write in the cp<cpdec while loop. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.. EPSS estimates a 0.67% chance of exploitation in the next 30 days.
Description
mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write in the cp<cpdec while loop. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Ntp | Ntp | 4.2.8 | P15 |
References
- https://github.com/spwpun/ntp-4.2.8p15-cves/blob/main/CVE-2023-26551Third Party Advisory
- https://github.com/spwpun/ntp-4.2.8p15-cves/issues/1#issuecomment-1506667321Third Party Advisory
- https://github.com/spwpun/ntp-4.2.8p15-cves/blob/main/CVE-2023-26551Third Party Advisory
- https://github.com/spwpun/ntp-4.2.8p15-cves/issues/1#issuecomment-1506667321Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-26551?
mstolfp in libntp/mstolfp.c in NTP 4.2.8p15 has an out-of-bounds write in the cp<cpdec while loop. An adversary may be able to attack a client ntpq process, but cannot attack ntpd.
How severe is CVE-2023-26551?
CVE-2023-26551 has a CVSS score of 5.6/10 (MEDIUM severity). The EPSS model estimates a 0.67% probability of exploitation in the next 30 days.
How do I fix CVE-2023-26551?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2023-26551?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST