Bug 1889466 (CVE-2020-25829)

Summary:	CVE-2020-25829 pdns-recursor: 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
Product:	[Other] Security Response	Reporter:	Guilherme de Almeida Suckevicz <gsuckevi>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	ruben, sander
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-10-19 20:22:14 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1889467, 1889469
Bug Blocks:

Description Guilherme de Almeida Suckevicz 2020-10-19 18:01:16 UTC

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).

Reference:
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2020-07.html

Comment 1 Guilherme de Almeida Suckevicz 2020-10-19 18:03:04 UTC

Created pdns-recursor tracking bugs for this issue:

Affects: epel-all [bug 1889467]
Affects: fedora-all [bug 1889469]

Comment 2 Product Security DevOps Team 2020-10-19 20:22:14 UTC

This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.