CVE catalog
CVE-2015-7974
UBUNTU-CVE-2015-7974
- Severity
- High · CVSS 7.7
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 5.66% · Oct 27, 2026
NTP 4.x before 4.2.8p6 and 4.3.x before 4.3.90 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a "skeleton key."
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | ntp | 11 | 1:4.2.8p7+dfsg-1 | fixed |
| Debian | ntp | 7 | 1:4.2.6.p5+dfsg-2 | vulnerable |
| Debian | ntp | 7 | 1:4.2.6.p5+dfsg-2+deb7u1 | vulnerable |
| Debian | ntp | 7 | 1:4.2.6.p5+dfsg-2+deb7u2 | vulnerable |
| Debian | ntp | 7 | 1:4.2.6.p5+dfsg-2+deb7u3 | vulnerable |
| Debian | ntp | 7 | 1:4.2.6.p5+dfsg-2+deb7u4 | vulnerable |
| Debian | ntp | 7 | 1:4.2.6.p5+dfsg-2+deb7u5 | vulnerable |
| Debian | ntp | 7 | 1:4.2.6.p5+dfsg-2+deb7u6 | vulnerable |
| Debian | ntp | 7 | 1:4.2.6.p5+dfsg-2+deb7u7 | fixed |
| Debian | ntp | 8 | 1:4.2.6.p5+dfsg-7 | vulnerable |
| Debian | ntp | 8 | 1:4.2.6.p5+dfsg-7+deb8u1 | vulnerable |
| Debian | ntp | 8 | 1:4.2.6.p5+dfsg-7+deb8u2 | fixed |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2 | vulnerable |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.1 | vulnerable |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.2 | vulnerable |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.3 | vulnerable |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.5 | vulnerable |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.6 | vulnerable |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.7 | vulnerable |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.8 | vulnerable |
| Ubuntu | ntp | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10 | fixed |
| Ubuntu | ntp | 16.04 | 1:4.2.6.p5+dfsg-3ubuntu8 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.6.p5+dfsg-3ubuntu8.1 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.6.p5+dfsg-3ubuntu9 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu1 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu2 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu3 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu4 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.1 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.2 | vulnerable |
| Ubuntu | ntp | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.3 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | ntp | deb | 11 | 1:4.2.8p7+dfsg-1 | Not reported | DEBIAN-CVE-2015-7974 | Not reported |
| Debian | ntp | deb | 7 | 1:4.2.6.p5+dfsg-2+deb7u7 | Not reported | DLA-559-1 | Not reported |
| Debian | ntp | deb | 8 | 1:4.2.6.p5+dfsg-7+deb8u2 | Not reported | DSA-3629-1 | Not reported |
| Ubuntu | ntp | deb | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10 | Not reported | UBUNTU-CVE-2015-7974 | Not reported |
| Ubuntu | ntp | deb | 16.04 | 1:4.2.8p4+dfsg-3ubuntu5.3 | Not reported | UBUNTU-CVE-2015-7974 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2016_2583.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2015-7974]
- [https://osv.dev/vulnerability/DLA-559-1]
- [https://osv.dev/vulnerability/DSA-3629-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2015-7974]
- [https://security.access.redhat.com/data/csaf/v2/vex/2015/cve-2015-7974.json]
[FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]