Bug 1538763 (CVE-2017-15133)

Summary:	CVE-2017-15133 miekg-dns: Denial of service via TCP serving code
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	bleanhar, ccoleman, dedgar, dmcphers, fpokorny, jchaloup, jgoulding, jkeck, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	miekg-dns 1.0.4	Doc Type:	If docs needed, set a value
Doc Text:	A denial of service flaw was found in miekg-dns before 1.0.4. A remote attacker could use carefully timed TCP packets to block the DNS server from accepting new connections.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-06-08 03:38:16 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1539695, 1539696
Bug Blocks:	1538765

Description Pedro Sampaio 2018-01-25 18:54:06 UTC

A flaw was found in miekg-dns before 1.0.4. A flaw in the TCP serving code may completely block the DNS server from answering any TCP queries with a
very small number of open connections.

Upstream bug:

https://github.com/miekg/dns/issues/627

Upstream patch:

https://github.com/miekg/dns/pull/631

Comment 1 Pedro Sampaio 2018-01-25 18:54:12 UTC

Acknowledgments:

Name: the miekg-dns project

Comment 2 Pedro Sampaio 2018-01-29 13:15:55 UTC

Created golang-github-miekg-dns tracking bugs for this issue:

Affects: epel-6 [bug 1539696]
Affects: fedora-all [bug 1539695]