CVE catalog

CVE-2015-7691

UBUNTU-CVE-2015-7691

[CVE catalog]

Severity
High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
Updated
Source
[NVD] · [CVE record]
EPSS
7.10% · Oct 25, 2026

The crypto_xmit function in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (crash) via crafted packets containing particular autokey operations. NOTE: This vulnerability exists due to an incomplete fix for CVE-2014-9750.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debianntp111:4.2.8p4+dfsg-1fixed
Susentplinux enterprise desktop 11 sp44.2.8p4-5.1fixed
Susentplinux enterprise server 11 sp44.2.8p4-5.1fixed
Susentplinux enterprise server for sap applications 11 sp44.2.8p4-5.1fixed
Ubuntuntp14.041:4.2.6.p5+dfsg-3ubuntu2vulnerable
Ubuntuntp14.041:4.2.6.p5+dfsg-3ubuntu2.14.04.1vulnerable
Ubuntuntp14.041:4.2.6.p5+dfsg-3ubuntu2.14.04.2vulnerable
Ubuntuntp14.041:4.2.6.p5+dfsg-3ubuntu2.14.04.3vulnerable
Ubuntuntp14.041:4.2.6.p5+dfsg-3ubuntu2.14.04.5fixed

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debianntpdeb111:4.2.8p4+dfsg-1Not reportedDEBIAN-CVE-2015-7691Not reported
Susentprpmlinux enterprise desktop 11 sp44.2.8p4-5.1Not reportedSUSE-SU-2015:2058-1Not reported
Susentprpmlinux enterprise server 11 sp44.2.8p4-5.1Not reportedSUSE-SU-2015:2058-1Not reported
Susentprpmlinux enterprise server for sap applications 11 sp44.2.8p4-5.1Not reportedSUSE-SU-2015:2058-1Not reported
Ubuntuntpdeb14.041:4.2.6.p5+dfsg-3ubuntu2.14.04.5Not reportedUBUNTU-CVE-2015-7691Not reported

OpenFactory catalog packages

No matching packages in this catalog.

Observed:

References

[FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]