CVE catalog
CVE-2015-7855
UBUNTU-CVE-2015-7855
- Severity
- Medium · CVSS 6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - Published
- Updated
- Source
- [NVD] · [CVE record]
- EPSS
- 31.07% · Oct 25, 2026
The decodenetnum function in ntpd in NTP 4.2.x before 4.2.8p4, and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service (assertion failure) via a 6 or mode 7 packet containing a long data value.
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 | 1:4.2.8p4+dfsg-1 | 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 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | ntp | deb | 11 | 1:4.2.8p4+dfsg-1 | Not reported | DEBIAN-CVE-2015-7855 | Not reported |
| Ubuntu | ntp | deb | 14.04 | 1:4.2.6.p5+dfsg-3ubuntu2.14.04.5 | Not reported | UBUNTU-CVE-2015-7855 | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/suse-su-2015_2058-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2015-7855]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2015-7855]
- [https://security.access.redhat.com/data/csaf/v2/vex/2015/cve-2015-7855.json]
[FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]