CVE-2020-12244

MEDIUM

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.

References

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

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

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

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

Details

Source: MITRE

Published: 2020-05-19

Updated: 2020-05-23

Type: CWE-20

Risk Information

CVSS v2.0

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3.0

Base Score: 7.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 3.9

Severity: HIGH