CVE-2023-26555 — Out-of-bounds Write in NTP

CWE-787 — Out-of-bounds Write7 documents7 sources
Severity
6.4MEDIUMNVD
EPSS
0.7%
top 28.92%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
NTP
Timeline
PublishedApr 11
Latest updateOct 15

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.

CVSS vector

CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 0.5 | Impact: 5.9

Affected Packages1 packages

▶NVDntp/ntp4.2.8

🔴Vulnerability Details

3
CVEList
CVE-2023-26555: praecis_parse in ntpd/refclock_palisade↗2023-04-11
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OSV
CVE-2023-26555: praecis_parse in ntpd/refclock_palisade↗2023-04-11
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GHSA
GHSA-3vvp-9ghf-fqvw: praecis_parse in ntpd/refclock_palisade↗2023-04-11
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📋Vendor Advisories

3
Oracle
Oracle Oracle Communications Risk Matrix: Routing (NTP) — CVE-2023-26555↗2025-10-15
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Red Hat
ntp: an out-of-bounds write may lead to a DoS↗2023-04-12
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Debian
CVE-2023-26555: ntp - praecis_parse in ntpd/refclock_palisade.c in NTP 4.2.8p15 has an out-of-bounds w...↗2023
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