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CVE-2020-12244

Date: May 19, 2020

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.

Severity Score

Related Resources (13)

https://www.debian.org/security/2020/dsa-4691
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMP72NJGKBWR5WEBXAWX5KSLQUDFTG6S/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PS4ZN5XGENYNFKX7QIIOUCQQHXE37GJF/
https://nvd.nist.gov/vuln/detail/CVE-2020-12244
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PS4ZN5XGENYNFKX7QIIOUCQQHXE37GJF/
http://www.openwall.com/lists/oss-security/2020/05/19/3
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NMP72NJGKBWR5WEBXAWX5KSLQUDFTG6S/
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-12244
https://security.alpinelinux.org/vuln/CVE-2020-12244
https://security-tracker.debian.org/tracker/CVE-2020-12244
https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-02.html
https://www.mend.io/vulnerability-database/CVE-2020-12244

Severity Score

Weakness Type (CWE)

Improper Verification of Cryptographic Signature

CWE-347

Improper Input Validation

CWE-20

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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