CVE-2015-5195

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.8% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-07-21 · updated 2026-06-17
Weakness: CWE-20

Description

ntp_openssl.m4 in ntpd in NTP before 4.2.7p112 allows remote attackers to cause a denial of service (segmentation fault) via a crafted statistics or filegen configuration command that is not enabled during compilation.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04, 15.04, 15.10
Debian Linux: 7.0, 8.0
Fedoraproject Fedora: 21, 22, 23
NTP: through 4.2.7
RedHat Enterprise Linux Desktop: 6.0, 7.0
RedHat Enterprise Linux Hpc Node: 6.0, 7.0
RedHat Enterprise Linux Server: 6.0, 7.0
RedHat Enterprise Linux Workstation: 6.0, 7.0

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169167.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/166992.html
http://rhn.redhat.com/errata/RHSA-2016-0780.html
http://rhn.redhat.com/errata/RHSA-2016-2583.html
http://www.debian.org/security/2015/dsa-3388
http://www.openwall.com/lists/oss-security/2015/08/25/3
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
http://www.securityfocus.com/bid/76474
http://www.ubuntu.com/usn/USN-2783-1
https://bugzilla.redhat.com/show_bug.cgi?id=1254544
https://github.com/ntp-project/ntp/commit/52e977d79a0c4ace997e5c74af429844da2f27be

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