Bug 1840189 (CVE-2020-12244)

Summary:	CVE-2020-12244 pdns-recursor: incorrect handling of records in the answer section of a NXDOMAIN response lacking an SOA allows an attacker to bypass DNSSEC validation
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:	2020-05-26 15:15:46 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:	1840192, 1840193
Bug Blocks:

Description Guilherme de Almeida Suckevicz 2020-05-26 14:21:26 UTC

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.

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

Comment 1 Guilherme de Almeida Suckevicz 2020-05-26 14:26:52 UTC

Created pdns-recursor tracking bugs for this issue:

Affects: epel-all [bug 1840192]
Affects: fedora-all [bug 1840193]

Comment 2 Product Security DevOps Team 2020-05-26 15:15:46 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.