CVEvulnerability
CVE-2016-5117
5.9 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2017-01-31
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 5.9 MEDIUM — CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:N
- Weaknesses
- CWE-254
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 configurations
• openntpd openntpd (<= 6.0)
Related
Weakness · not in database (1)
References
- http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/ntpd/constraint.c.diff?r1=1.27&r2=1.28 Patch
- http://www.openntpd.org/txt/release-6.0p1.txt Vendor Advisory
- http://www.openwall.com/lists/oss-security/2016/05/23/2 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/05/29/6 Mailing List, Third Party Advisory
- http://cvsweb.openbsd.org/cgi-bin/cvsweb/src/usr.sbin/ntpd/constraint.c.diff?r1=1.27&r2=1.28 Patch
- http://www.openntpd.org/txt/release-6.0p1.txt Vendor Advisory
- http://www.openwall.com/lists/oss-security/2016/05/23/2 Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2016/05/29/6 Mailing List, Third Party Advisory