Bug 1727208 (CVE-2019-10190) - CVE-2019-10190 knot-resolver: improper input validation in DNS resolver allows remote attacker to bypass DNSSEC validation
Summary: CVE-2019-10190 knot-resolver: improper input validation in DNS resolver allow...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2019-10190
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1729824 1729825
Blocks:
TreeView+ depends on / blocked
 
Reported: 2019-07-05 04:02 UTC by Dhananjay Arunesh
Modified: 2019-09-29 15:15 UTC (History)
5 users (show)

Fixed In Version:
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Last Closed: 2019-07-15 08:40:43 UTC


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Description Dhananjay Arunesh 2019-07-05 04:02:52 UTC
A vulnerability was discovered in DNS resolver component of knot resolver through version 3.2.0 before 4.0.0 which allows  remote attacker to bypass DNSSEC validation for non-existence answer. Where NXDOMAIN answer would get passed through to the client even if its DNSSEC validation failed, instead of sending a SERVFAIL packet. Caching is not affected by this particular bug but see the other CVE.

Comment 3 Dhananjay Arunesh 2019-07-05 09:26:56 UTC
Acknowledgments:

Name: Petr Špaček (CZ.NIC)
Upstream: Vladimír Čunát (CZ.NIC)

Comment 5 Dhananjay Arunesh 2019-07-15 03:46:02 UTC
Created knot-resolver tracking bugs for this issue:

Affects: epel-7 [bug 1729825]
Affects: fedora-all [bug 1729824]

Comment 6 Product Security DevOps Team 2019-07-15 08:40:43 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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