| Name | CVE-2016-5117 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 825856 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| openntpd (PTS) | buster | 1:6.2p3-4 | fixed |
| sid, trixie, bookworm, bullseye | 1:6.2p3-4.2 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| openntpd | source | wheezy | (not affected) | | | |
| openntpd | source | jessie | (not affected) | | | |
| openntpd | source | (unstable) | 1:6.0p1-1 | unimportant | | 825856 |
Notes
[jessie] - openntpd <not-affected> (Vulnerable code introduced later)
[wheezy] - openntpd <not-affected> (Vulnerable code introduced later)
https://www.openwall.com/lists/oss-security/2016/05/23/2
Authenticated TLS "contraints" introduced in 2015-03-24 OpenNTPD 5.7p4
Option is not enabled at buildtime.