AI Score
Confidence
High
EPSS
Percentile
54.0%
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.
cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/ntpd/constraint.c.diff?r1=1.27&r2=1.28
www.openntpd.org/txt/release-6.0p1.txt
www.openwall.com/lists/oss-security/2016/05/23/2
www.openwall.com/lists/oss-security/2016/05/29/6