Bug 1648378 (CVE-2018-14644) - CVE-2018-14644 pdns: crafted query for meta-types can lead to a DoS
Summary: CVE-2018-14644 pdns: crafted query for meta-types can lead to a DoS
Alias: CVE-2018-14644
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1648380 1648382 1649045 1649046
TreeView+ depends on / blocked
Reported: 2018-11-09 15:08 UTC by Laura Pardo
Modified: 2019-09-29 15:02 UTC (History)
2 users (show)

Fixed In Version: pdns-recursor 4.0.9, pdns-recursor 4.1.5
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Clone Of:
Last Closed: 2019-06-10 10:42:23 UTC

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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.


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.

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