CVE catalog
CVE-2015-1799
UBUNTU-CVE-2015-1799
- Severity
- Unknown
- Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 0.90% · Oct 25, 2026
The symmetric-key feature in the receive function in ntp_proto.c in ntpd in NTP 3.x and 4.x before 4.2.8p2 performs state-variable updates upon receiving certain invalid packets, which makes it easier for man-in-the-middle attackers to cause a denial of service (synchronization loss) by spoofing the source IP address of a peer.
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 |
| 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 |
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-2015-1799 | Not reported |
| Ubuntu | ntp | deb | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.3 | Not reported | UBUNTU-CVE-2015-1799 | 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-2015-1799]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2015-1799]
[FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]