CVE-2016-5117
5.9 · MEDIUMOverview
CVE-2016-5117 is a medium-severity vulnerability affecting openntpd openntpd. It was published on January 31, 2017 and has a CVSS 3.0 base score of 5.9 (MEDIUM).
This vulnerability has a CVSS 3.0 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from openntpd. Update openntpd to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| openntpd | openntpd | 0 | Affected |
References
Frequently Asked Questions
What is CVE-2016-5117?
CVE-2016-5117 is a medium-severity vulnerability affecting openntpd openntpd. It was published on January 31, 2017 and has a CVSS 3.0 base score of 5.9 (MEDIUM).
How severe is CVE-2016-5117?
This vulnerability has a CVSS 3.0 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2016-5117?
Check the references section for vendor advisories and patches from openntpd. Update openntpd to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2016-5117?
CyberStrike's AI-powered security agents can automatically detect CVE-2016-5117 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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