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: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: mstevens, ruben, sander
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=moderate,public=20181106,reported=20181112,source=internet,cvss3=5.3/CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L,cwe=CWE-400,fedora-all/pdns=affected,epel-all/pdns=affected
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: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
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]