CVE-2016-5117
Severity CVSS v4.0:
Pending analysis
Type:
CWE-254
Security Features
Publication date:
31/01/2017
Last modified:
20/04/2025
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.
Impact
Base Score 3.x
5.90
Severity 3.x
MEDIUM
Base Score 2.0
4.30
Severity 2.0
MEDIUM
Vulnerable products and versions
CPE | From | Up to |
---|---|---|
cpe:2.3:a:openntpd:openntpd:*:*:*:*:*:*:*:* | 6.0 (including) |
To consult the complete list of CPE names with products and versions, see this page
References to Advisories, Solutions, and Tools
- http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/ntpd/constraint.c.diff?r1=1.27&r2=1.28
- http://www.openntpd.org/txt/release-6.0p1.txt
- http://www.openwall.com/lists/oss-security/2016/05/23/2
- http://www.openwall.com/lists/oss-security/2016/05/29/6
- http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/ntpd/constraint.c.diff?r1=1.27&r2=1.28
- http://www.openntpd.org/txt/release-6.0p1.txt
- http://www.openwall.com/lists/oss-security/2016/05/23/2
- http://www.openwall.com/lists/oss-security/2016/05/29/6