CVE-2020-25829 Information

Description

An issue has been found in PowerDNS Recursor before 4.1.18 4.2.x before 4.2.5 and 4.3.x before 4.3.5. A remote attacker can cause the cached records for a given name to be updated to the Bogus DNSSEC validation state instead of their actual DNSSEC Secure state via a DNS ANY query. This results in a denial of service for installation that always validate (dnssec=validate) and for clients requesting validation when on-demand validation is enabled (dnssec=process).

CVSS Vector

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

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00036.html https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-07.html

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5