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CVSSv2

CVE-2020-12244

Published: 19/05/2020 Updated: 07/11/2023
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 445
Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N
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Vulnerability Summary

An issue has been found in PowerDNS Recursor 4.1.0 up to and including 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 malicious user to bypass DNSSEC validation.

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powerdns recursor

fedoraproject fedora 31

fedoraproject fedora 32

debian debian linux 10.0

opensuse leap 15.1

opensuse backports sle 15.0

Vendor Advisories

Debian Security Advisories: DSA-4691-1 pdns-recursor -- security update
Two vulnerabiliites have been discovered in PDNS Recursor, a resolving name server; a traffic amplification attack against third party authoritative name servers (NXNSAttack) and insufficient validation of NXDOMAIN responses lacking an SOA The version of pdns-recursor in the oldstable distribution (stretch) is no longer supported If these securit ...
Arch Linux Issues:
An issue has been found in PowerDNS Recursor before 431 and 422 where records in the answer section of a NXDOMAIN response lacking an SOA were not properly validated in SyncRes::processAnswer This would allow an attacker in position of man-in-the-middle to send a NXDOMAIN answer for a name that does exist, bypassing DNSSEC validation ...

References

CWE-347https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-02.htmlhttp://www.openwall.com/lists/oss-security/2020/05/19/3https://www.debian.org/security/2020/dsa-4691http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.htmlhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PS4ZN5XGENYNFKX7QIIOUCQQHXE37GJF/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMP72NJGKBWR5WEBXAWX5KSLQUDFTG6S/https://nvd.nist.govhttps://www.debian.org/security/2020/dsa-4691
CVSSv2
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2020-4463CVE-2024-29895injectCVE-2023-52689CVE-2024-5049CVE-2024-5051privilege escalationphysicalCVE-2023-52676
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