CVE catalog
CVE-2016-2120
pdns: CVE-2016-2120
- Severity
- High · CVSS 7.5
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 2.00% · Oct 27, 2026
An issue has been found in PowerDNS Authoritative Server versions up to and including 3.4.10, 4.0.1 allowing an authorized user to crash the server by inserting a specially crafted record in a zone under their control then sending a DNS query for that record. The issue is due to an integer overflow when checking if the content of the record matches the expected size, allowing an attacker to cause a read past the buffer boundary.
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 | pdns | sid | 5.1.5-1 | fixed |
| Debian | pdns | forky | 5.1.5-1 | fixed |
| Debian | pdns | trixie | 4.9.17-0+deb13u1 | fixed |
| Debian | pdns | trixie-security | 4.9.18-0+deb13u1 | fixed |
| Debian | pdns | bookworm | 4.7.3-2 | fixed |
| Opensuse | pdns-recursor | tumbleweed | 4.5.5-1.3 | fixed |
| Ubuntu | pdns | pro | 3.4.5-1build2 | vulnerable |
| Ubuntu | pdns | pro | 3.4.6-2 | vulnerable |
| Ubuntu | pdns | pro | 3.4.6-3 | vulnerable |
| Ubuntu | pdns | pro | 3.4.7-1 | vulnerable |
| Ubuntu | pdns | pro | 3.4.7-2 | vulnerable |
| Ubuntu | pdns | pro | 4.0.0~alpha1-1 | vulnerable |
| Ubuntu | pdns | pro | 4.0.0~alpha2-2 | vulnerable |
| Ubuntu | pdns | pro | 4.0.0~alpha2-3 | vulnerable |
| Ubuntu | pdns | pro | 4.0.0~alpha2-3build1 | vulnerable |
| Ubuntu | pdns | pro | 4.0.0~alpha2-3ubuntu0.1~esm1 | vulnerable |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | pdns | source | sid | 4.0.2-1 | not yet assigned | Not reported | Not reported |
| Debian | pdns | source | forky | 4.0.2-1 | not yet assigned | Not reported | Not reported |
| Debian | pdns | source | trixie | 4.0.2-1 | not yet assigned | Not reported | Not reported |
| Debian | pdns | source | bookworm | 4.0.2-1 | not yet assigned | Not reported | Not reported |
| Opensuse | pdns-recursor | rpm | tumbleweed | 4.5.5-1.3 | Not reported | OPENSUSE-SU-2024:11157-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
[Debian 12 (Bookworm)]
- [pdns-backend-bind]Unknown
Source package: [pdns]
Details (2)
4.7.3-2· amd64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
4.7.3-2· arm64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
- [pdns-backend-geoip]Unknown
Source package: [pdns]
Details (2)
4.7.3-2· amd64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
4.7.3-2· arm64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
- [pdns-backend-ldap]Unknown
Source package: [pdns]
Details (2)
4.7.3-2· amd64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
4.7.3-2· arm64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
- [pdns-backend-lmdb]Unknown
Source package: [pdns]
Details (2)
4.7.3-2· amd64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
4.7.3-2· arm64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
- [pdns-backend-lua2]Unknown
Source package: [pdns]
Details (2)
4.7.3-2· amd64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
4.7.3-2· arm64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
- [pdns-backend-mysql]Unknown
Source package: [pdns]
Details (2)
4.7.3-2· amd64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
4.7.3-2· arm64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
- [pdns-backend-odbc]Unknown
Source package: [pdns]
Details (2)
4.7.3-2· amd64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
4.7.3-2· arm64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
- [pdns-backend-pgsql]Unknown
Source package: [pdns]
Details (2)
4.7.3-2· amd64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
4.7.3-2· arm64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
- [pdns-backend-pipe]Unknown
Source package: [pdns]
Details (2)
4.7.3-2· amd64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
4.7.3-2· arm64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
- [pdns-backend-remote]Unknown
Source package: [pdns]
Details (2)
4.7.3-2· amd64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
4.7.3-2· arm64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
- [pdns-backend-sqlite3]Unknown
Source package: [pdns]
Details (2)
4.7.3-2· amd64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
4.7.3-2· arm64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
- [pdns-backend-tinydns]Unknown
Source package: [pdns]
Details (2)
4.7.3-2· amd64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
4.7.3-2· arm64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
- [pdns-ixfrdist]Unknown
Source package: [pdns]
Details (2)
4.7.3-2· amd64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
4.7.3-2· arm64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
- [pdns-server]Unknown
Source package: [pdns]
Details (2)
4.7.3-2· amd64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
4.7.3-2· arm64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
- [pdns-tools]Unknown
Source package: [pdns]
Details (2)
4.7.3-2· amd64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
4.7.3-2· arm64 · bookwormFixed · Fixed:
4.0.2-1dsa · pdns · debian · bookworm; dsa · pdns · debian · 12
[Debian 13 (Trixie)]
- [pdns-backend-bind]Unknown
Source package: [pdns]
Details (4)
4.9.16-0+deb13u1· amd64 · trixieFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
4.9.16-0+deb13u1· arm64 · trixieFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
4.9.17-0+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
4.9.17-0+deb13u1· arm64 · trixie-securityFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
- [pdns-backend-geoip]Unknown
Source package: [pdns]
Details (4)
4.9.16-0+deb13u1· amd64 · trixieFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
4.9.16-0+deb13u1· arm64 · trixieFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
4.9.17-0+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
4.9.17-0+deb13u1· arm64 · trixie-securityFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
- [pdns-backend-ldap]Unknown
Source package: [pdns]
Details (4)
4.9.16-0+deb13u1· amd64 · trixieFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
4.9.16-0+deb13u1· arm64 · trixieFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
4.9.17-0+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
4.9.17-0+deb13u1· arm64 · trixie-securityFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
- [pdns-backend-lmdb]Unknown
Source package: [pdns]
Details (4)
4.9.16-0+deb13u1· amd64 · trixieFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
4.9.16-0+deb13u1· arm64 · trixieFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
4.9.17-0+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
4.9.17-0+deb13u1· arm64 · trixie-securityFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
- [pdns-backend-lua2]Unknown
Source package: [pdns]
Details (4)
4.9.16-0+deb13u1· amd64 · trixieFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
4.9.16-0+deb13u1· arm64 · trixieFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
4.9.17-0+deb13u1· amd64 · trixie-security · Historical versionFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
4.9.17-0+deb13u1· arm64 · trixie-securityFixed · Fixed:
4.0.2-1dsa · pdns · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2024_11156-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2016-2120]
- [https://osv.dev/vulnerability/DLA-798-1]
- [https://osv.dev/vulnerability/DSA-3764-1]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2016-2120]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:11157-1]
- [https://security-tracker.debian.org/tracker/CVE-2016-2120]
- [https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-2120.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]