UBUNTU-CVE-2016-2120

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Source
https://ubuntu.com/security/CVE-2016-2120
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-2120.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2016-2120
Upstream
Published
2018-11-01T13:29:00Z
Modified
2025-09-08T16:43:37Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • 6.5 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:Pro:16.04:LTS / pdns

Package

Name
pdns
Purl
pkg:deb/ubuntu/pdns@4.0.0~alpha2-3ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

3.*

3.4.5-1build2
3.4.6-2
3.4.6-3
3.4.7-1
3.4.7-2

4.*

4.0.0~alpha1-1
4.0.0~alpha2-2
4.0.0~alpha2-3
4.0.0~alpha2-3build1
4.0.0~alpha2-3ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1",
            "binary_name": "pdns-backend-geoip"
        },
        {
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1",
            "binary_name": "pdns-backend-ldap"
        },
        {
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1",
            "binary_name": "pdns-backend-lua"
        },
        {
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1",
            "binary_name": "pdns-backend-mydns"
        },
        {
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1",
            "binary_name": "pdns-backend-mysql"
        },
        {
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1",
            "binary_name": "pdns-backend-pgsql"
        },
        {
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1",
            "binary_name": "pdns-backend-pipe"
        },
        {
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1",
            "binary_name": "pdns-backend-remote"
        },
        {
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1",
            "binary_name": "pdns-backend-sqlite3"
        },
        {
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1",
            "binary_name": "pdns-backend-tinydns"
        },
        {
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1",
            "binary_name": "pdns-server"
        },
        {
            "binary_version": "4.0.0~alpha2-3ubuntu0.1~esm1",
            "binary_name": "pdns-tools"
        }
    ]
}