Bug 1762957 (CVE-2019-6476) - CVE-2019-6476 bind: An error in QNAME minimization code can cause BIND to exit with an assertion failure
Summary: CVE-2019-6476 bind: An error in QNAME minimization code can cause BIND to exi...
Keywords:
Status: CLOSED NOTABUG
Alias: CVE-2019-6476
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: 1762958
Blocks: 1762961
TreeView+ depends on / blocked
 
Reported: 2019-10-17 21:49 UTC by kat
Modified: 2021-02-16 21:13 UTC (History)
11 users (show)

Fixed In Version: bind 9.15.5, bind 9.14.7
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Last Closed: 2019-10-22 18:51:24 UTC
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Description kat 2019-10-17 21:49:01 UTC 
A defect in code added to support QNAME minimization can cause named to exit with an assertion failure if a forwarder returns a referral rather than resolving the query.

https://kb.isc.org/docs/cve-2019-6476
Comment 1 kat 2019-10-17 21:49:14 UTC 
Created bind tracking bugs for this issue:

Affects: fedora-all [bug 1762958]
Comment 2 Tomas Hoger 2019-10-18 12:36:35 UTC 
External References:

https://kb.isc.org/docs/cve-2019-6476
Comment 3 Tomas Hoger 2019-10-20 21:12:49 UTC 
Upstream commit (9.15 branch):

https://gitlab.isc.org/isc-projects/bind9/commit/6923a80357d634ee7b701c1ad4fad9b3db95f8c8
Comment 4 Huzaifa S. Sidhpurwala 2019-10-22 05:03:35 UTC 
Statement:

This flaw did not affect the versions of bind shipped with Red Hat Enterprise Linux 6, 7 and 8.
Comment 5 Product Security DevOps Team 2019-10-22 18:51:24 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2019-6476
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