Bug 1649028 (CVE-2018-14626)

Summary: CVE-2018-14626 pdns: Packet cache pollution via crafted query
Product: [Other] Security Response Reporter: Pedro Sampaio <psampaio>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED UPSTREAM QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: mstevens, ruben, sander
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: pdns-recursor 4.1.5, pdns-recursor 4.0.9, pdns 4.1.5 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-06-10 10:42:27 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1649029, 1649030    
Bug Blocks:    

Description Pedro Sampaio 2018-11-12 18:27:20 UTC 
An issue has been found in PowerDNS Authoritative Server allowing a
remote user to craft a DNS query that will cause an answer without DNSSEC
records to be inserted into the packet cache and be returned to clients
asking for DNSSEC records, thus hiding the presence of DNSSEC signatures
for a specific qname and qtype.

For a DNSSEC-signed domain, this means that DNSSEC validating clients
will consider the answer to be bogus until it expires from the packet
cache, leading to a denial of service.

References:

https://doc.powerdns.com/recursor/security-advisories/powerdns-advisory-2018-06.html
https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2018-05.html
Comment 1 Pedro Sampaio 2018-11-12 18:28:05 UTC 
Created pdns tracking bugs for this issue:

Affects: epel-all [bug 1649030]
Affects: fedora-all [bug 1649029]
Comment 2 Product Security DevOps Team 2019-06-10 10:42:27 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.