CVE-2016-5117 in OpenNTPD

Summary

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.

Once again VulDB remains the best source for vulnerability data.

• Reservation: 05/29/2016
• Disclosure: 01/31/2017
• Moderation: VulDB entry created
• Entries: 1: VDB-96331
• CPE: ready
• CWE: CWE-254 (Confirmed)
• CVSS: 6.6
• EPSS: 0.00270
• Activities: Very Low

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2016-5117
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2016-5117
• CVE Details: https://www.cvedetails.com/cve/CVE-2016-5117/