vulnwire
5.9med

CVE-2016-5117

OpenNTPD before 6.0p1 does not validate the CN for HTTPS constraint requests, which allows remote attackers to bypass the man-in-the-middle…

Published 9 y ago · modified 4 mo ago · JSON

CVSS
5.9
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
0.7%
percentile 53%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

0.70% probability of exploitation in the next 30 days, higher than 53% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.05.9CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD2.04.3AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness

References

  • cvsweb.openbsd.org /cgi-bin/cvsweb/src/usr.sbin/ntpd/constraint.c.diff?r1=1.27&r2=1.28 · x_refsource_CONFIRM, x_transferred
  • openwall.com /lists/oss-security/2016/05/23/2 · mailing-list, x_refsource_MLIST, x_transferred
  • openwall.com /lists/oss-security/2016/05/29/6 · mailing-list, x_refsource_MLIST, x_transferred
  • openntpd.org /txt/release-6.0p1.txt · x_refsource_CONFIRM, x_transferred

Sources

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