Bug 1648378 (CVE-2018-14644)

Summary:	CVE-2018-14644 pdns: crafted query for meta-types can lead to a DoS
Product:	[Other] Security Response	Reporter:	Laura Pardo <lpardo>
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:	pdns-recursor 4.0.9, pdns-recursor 4.1.5	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-10 10:42:23 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:	1648380, 1648382, 1649045, 1649046
Bug Blocks:

Description Laura Pardo 2018-11-09 15:08:17 UTC

An issue has been found in PowerDNS Recursor from 4.0.0 up to and including 4.1.4. A remote attacker sending a DNS query for a meta-type like OPT can lead to a zone being wrongly cached as failing DNSSEC validation. It only arises if the parent zone is signed, and all the authoritative servers for that parent zone answer with FORMERR to a query for at least one of the meta-types. As a result, subsequent queries from clients requesting DNSSEC validation will be answered with a ServFail.


References:
https://docs.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-07.html

Comment 1 Laura Pardo 2018-11-09 15:08:55 UTC

Created pdns tracking bugs for this issue:

Affects: epel-all [bug 1648382]
Affects: fedora-all [bug 1648380]

Comment 2 Pedro Sampaio 2018-11-12 18:49:50 UTC

Created pdns-recursor tracking bugs for this issue:

Affects: epel-all [bug 1649046]
Affects: fedora-all [bug 1649045]

Comment 3 Product Security DevOps Team 2019-06-10 10:42:23 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.