CVE catalog
CVE-2015-1798
Security update for ntp
- Severity
- Unknown
- Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 2.24% · Oct 25, 2026
The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 4.x before 4.2.8p2 requires a correct MAC only if the MAC field has a nonzero length, which makes it easier for man-in-the-middle attackers to spoof packets by omitting the MAC.
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 | 1:4.2.6.p5+dfsg-6 | fixed |
| Debian | ntp | 6.0 | 1:4.2.6.p2+dfsg-1 | vulnerable |
| Debian | ntp | 6.0 | 1:4.2.6.p2+dfsg-1+deb6u3 | 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 | 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 | 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 | fixed |
| Suse | ntp | linux enterprise desktop 12 | 4.2.6p5-44.1 | fixed |
| Suse | ntp | linux enterprise server 12 | 4.2.6p5-44.1 | fixed |
| Suse | ntp | linux enterprise server for sap applications 12 | 4.2.6p5-44.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | ntp | deb | 11 | 1:4.2.6.p5+dfsg-6 | Not reported | DEBIAN-CVE-2015-1798 | Not reported |
| Debian | ntp | deb | 6.0 | 1:4.2.6.p2+dfsg-1+deb6u3 | Not reported | DLA-192-1 | Not reported |
| Debian | ntp | deb | 7 | 1:4.2.6.p5+dfsg-2+deb7u4 | Not reported | DSA-3223-1 | Not reported |
| Ubuntu | ntp | deb | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.3 | Not reported | USN-2567-1 | Not reported |
| Ubuntu | ntp | deb | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.3 | Not reported | UBUNTU-CVE-2015-1798 | Not reported |
| Suse | ntp | rpm | linux enterprise desktop 12 | 4.2.6p5-44.1 | Not reported | SUSE-SU-2015:0865-1 | Not reported |
| Suse | ntp | rpm | linux enterprise server 12 | 4.2.6p5-44.1 | Not reported | SUSE-SU-2015:0865-1 | Not reported |
| Suse | ntp | rpm | linux enterprise server for sap applications 12 | 4.2.6p5-44.1 | Not reported | SUSE-SU-2015:0865-1 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://access.redhat.com/errata/RHSA-2015:1459]
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2015_2231.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2015-1798]
- [https://osv.dev/vulnerability/DLA-192-1]
- [https://osv.dev/vulnerability/DSA-3223-1]
- [https://osv.dev/vulnerability/SUSE-SU-2015:0865-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2015-1798]
- [https://osv.dev/vulnerability/USN-2567-1]
[FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]