CVEvulnerability

CVE-2020-25829

7.5 HIGH Published 2020-10-16 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-10-16
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P

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).

Affected configurations

• powerdns recursor (< 4.1.18) • powerdns recursor (>= 4.2.0 < 4.2.5) • powerdns recursor (>= 4.3.0 < 4.3.5) • opensuse backports sle 15.0 • opensuse leap 15.1 • opensuse leap 15.2

References