CVE-2020-12244
HIGHPowerDNS Recursor 4.1.0-4.3.0 - DNSSEC Validation Bypass via NXDOMAIN Response
Title source: llmDescription
An issue has been found in PowerDNS Recursor 4.1.0 through 4.3.0 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer, allowing an attacker to bypass DNSSEC validation.
References (6)
Core 6
Core References
Vendor Advisory x_refsource_confirm
https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-02.html
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
http://www.openwall.com/lists/oss-security/2020/05/19/3
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2020/dsa-4691
Mailing List, Third Party Advisory vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.html
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PS4ZN5XGENYNFKX7QIIOUCQQHXE37GJF/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMP72NJGKBWR5WEBXAWX5KSLQUDFTG6S/
Scores
CVSS v3
7.5
EPSS
0.0009
EPSS Percentile
26.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-347
Status
published
Products (6)
debian/debian_linux
10.0
fedoraproject/fedora
31
fedoraproject/fedora
32
opensuse/backports_sle
15.0 sp1
opensuse/leap
15.1
powerdns/recursor
4.1.0 - 4.3.0
Published
May 19, 2020
Tracked Since
Feb 18, 2026