VulnerabilityModified
CVE-2020-12244
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.
HIGH 7.5EPSS 2.43%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.43%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 2.43% probability · 83th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-347
- Affected
- powerdns/recursor · fedoraproject/fedora · debian/debian linux · opensuse/backports sle · opensuse/leap
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.htmlMailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/05/19/3Mailing List, Third Party Advisory
- https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-02.htmlVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMP72NJGKBWR5WEBXAWX5KSLQUDFTG6S/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PS4ZN5XGENYNFKX7QIIOUCQQHXE37GJF/
- https://www.debian.org/security/2020/dsa-4691Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.htmlMailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2020/05/19/3Mailing List, Third Party Advisory
- https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-02.htmlVendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NMP72NJGKBWR5WEBXAWX5KSLQUDFTG6S/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PS4ZN5XGENYNFKX7QIIOUCQQHXE37GJF/
- https://www.debian.org/security/2020/dsa-4691Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.