CVE-2020-25829

published 2020-10-16

CVE-2020-25829: 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…

high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C N I N A H

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

7 ranges

Vendor	Product	Version range	Fixed in
debian	pdns-recursor	< pdns-recursor 4.3.5-1 (bookworm)	pdns-recursor 4.3.5-1 (bookworm)
opensuse	backports_sle	—	—
opensuse	leap	—	—
opensuse	leap	—	—
powerdns	recursor	< 4.1.18	4.1.18
powerdns	recursor	>= 4.2.0 < 4.2.5	4.2.5
powerdns	recursor	>= 4.3.0 < 4.3.5	4.3.5

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

osv 7.5 HIGH