CVE-2020-12244

moderate-risk

Published 2020-05-19

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.

Do I need to act?

0.09% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.5/10 High

NETWORK / LOW complexity

Affected Products (6)

Recursor

Fedora

Debian Linux

Backports Sle

Leap

Affected Vendors

Debian Powerdns Fedoraproject Opensuse

References (12)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.html

Mailing List http://www.openwall.com/lists/oss-security/2020/05/19/3

Vendor Advisory https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-02....

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...

Third Party Advisory https://www.debian.org/security/2020/dsa-4691

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00052.html

Mailing List http://www.openwall.com/lists/oss-security/2020/05/19/3

Vendor Advisory https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-02....

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...

Third Party Advisory https://www.debian.org/security/2020/dsa-4691

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moderate-risk

Severity 26/34 · High

Exploitability 0/34 · Minimal

Exposure 13/34 · Low