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 mitigations via a crafted timestamp constraint with a valid....
MediumCVSS 5.9
EPSS 0.70%
- Published
- Updated
- Exploit status
- No public exploit known
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 products
| Product | Affected versions | Fixed in |
|---|---|---|
| debian/openntpd(Debian:12) | < 1:6.0p1-1 | 1:6.0p1-1 |
| debian/openntpd(Debian:13) | < 1:6.0p1-1 | 1:6.0p1-1 |
| debian/openntpd(Debian:14) | < 1:6.0p1-1 | 1:6.0p1-1 |
| openntpd | <= 6.0 | No fix listed |
References
- Debian Security Tracker CVE-2016-5117 vendor-advisory
- cvsweb.openbsd.org patch
- www.openntpd.org vendor-advisory
- [oss-security] 20160523 CVE request: OpenNTPD not verifying CN during HTTPS constraints request mailing-list third-party-advisory
- [oss-security] 20160529 Re: CVE request: OpenNTPD not verifying CN during HTTPS constraints request mailing-list third-party-advisory
- bugs.debian.org issue-tracking