CVE-2016-5117

Published: Jan 31, 2017Modified: May 13, 2026

5.9

Vector

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Exploitability: 2.2 / Impact: 3.6

Source: NVD

Description

OpenNTPD before 6.0p1 does not validate the CN for HTTPS constraint requests, which allows remote attackers to bypass the man-in-the-middle mitigations via a crafted timestamp constraint with a valid certificate.

Affected (1)

Products: Openntpd: Openntpd

Openntpd

1 product

Openntpd

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Openntpd Openntpd	version ≤ 6.0

Related CWEs

CWE-254

References (8)

http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/ntpd/constraint.c.diff?r1=1.27&r2=1.28

Source: cve@mitre.org

Patch

http://www.openntpd.org/txt/release-6.0p1.txt

Source: cve@mitre.org

Vendor Advisory

http://www.openwall.com/lists/oss-security/2016/05/23/2

Source: cve@mitre.org

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2016/05/29/6

Source: cve@mitre.org

Mailing ListThird Party Advisory

http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/ntpd/constraint.c.diff?r1=1.27&r2=1.28

Source: af854a3a-2127-422b-91ae-364da2661108

Patch

http://www.openntpd.org/txt/release-6.0p1.txt

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

http://www.openwall.com/lists/oss-security/2016/05/23/2

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

http://www.openwall.com/lists/oss-security/2016/05/29/6

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

Timeline

No history available yet.