Bug 1413990 (CVE-2016-9954)

Summary:	CVE-2016-9954 chicken: Excessive resource consumption due to irregex regular expression parsing
Product:	[Other] Security Response	Reporter:	Andrej Nemec <anemec>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED UPSTREAM	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	relrod
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
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Fixed In Version:		Doc Type:	If docs needed, set a value
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Clone Of:		Environment:
Last Closed:	2017-05-12 01:30:01 UTC	Type:	---
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Documentation:	---	CRM:
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1413993, 1413994
Bug Blocks:

Description Andrej Nemec 2017-01-17 13:58:26 UTC

A vulnerability was found in irregex which is bundled as a part of chicken. Parsing a maliciously crafted regular expression could cause resource exhaustion resulting in a Denial of Service.

References:

http://seclists.org/oss-sec/2016/q4/681

Upstream patch:

https://github.com/ashinn/irregex/commit/a16ffc86eca15fca9e40607d41de3cea9cf868f1

Comment 1 Andrej Nemec 2017-01-17 14:05:17 UTC

Created chicken tracking bugs for this issue:

Affects: fedora-all [bug 1413993]
Affects: epel-all [bug 1413994]

Comment 2 Rick Elrod 2017-05-12 01:30:01 UTC

This has been fixed for a while.