Bug 1727211 (CVE-2019-10191) - CVE-2019-10191 knot-resolver: improper input validation in DNS resolver allows remote attacker to poison cache by unsigned negative answer
Summary: CVE-2019-10191 knot-resolver: improper input validation in DNS resolver allow...
Alias: CVE-2019-10191
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1729826 1729827
TreeView+ depends on / blocked
Reported: 2019-07-05 04:51 UTC by Dhananjay Arunesh
Modified: 2021-02-16 21:45 UTC (History)
4 users (show)

Fixed In Version:
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Clone Of:
Last Closed: 2019-07-15 08:40:44 UTC

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Description Dhananjay Arunesh 2019-07-05 04:51:11 UTC
A vulnerability was discovered in DNS resolver of knot resolver before version 4.1.0 which allows remote attacker to downgrade DNSSEC-secure domains to DNSSEC-insecure state, opening possibility of domain hijack using attacks against insecure DNS protocol.

Comment 2 Dhananjay Arunesh 2019-07-05 09:28:02 UTC

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

Comment 4 Dhananjay Arunesh 2019-07-15 03:46:50 UTC
Created knot-resolver tracking bugs for this issue:

Affects: epel-7 [bug 1729827]
Affects: fedora-all [bug 1729826]

Comment 5 Product Security DevOps Team 2019-07-15 08:40:44 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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