Bug 1032311 (CVE-2013-6371)

Summary:	CVE-2013-6371 json-c: hash collision DoS
Product:	[Other] Security Response	Reporter:	Vincent Danen <vdanen>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	agk, ccoleman, dmcphers, fweimer, jialiu, lmeyer, omarandemad, pfrields, rcollet, security-response-team, tkramer
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-06-11 05:47:48 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Bug Depends On:	1085676, 1085677, 1085678, 1086209, 1097036, 1097037
Bug Blocks:	770929, 1028485, 1032325

Description Vincent Danen 2013-11-20 00:20:43 UTC

Florian Weimer reported that the hash function in the json-c library was weak, and that parsing smallish JSON strings showed quadratic timing behaviour.  This could cause an application linked to the json-c library, and that processes some specially-crafted JSON data, to use excessive amounts of CPU.


Acknowledgements:

This issue was discovered by Florian Weimer of the Red Hat Product Security Team.

Comment 2 Huzaifa S. Sidhpurwala 2014-04-09 06:18:32 UTC

Public via:

https://github.com/json-c/json-c/commit/64e36901a0614bf64a19bc3396469c66dcd0b015

Comment 4 Huzaifa S. Sidhpurwala 2014-04-09 06:21:48 UTC

Created json-c tracking bugs for this issue:

Affects: fedora-all [bug 1085676]
Affects: epel-all [bug 1085677]

Comment 6 Fedora Update System 2014-04-17 06:04:02 UTC

json-c-0.11-6.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 Fedora Update System 2014-04-30 04:07:23 UTC

json-c-0.11-6.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 9 errata-xmlrpc 2014-06-10 12:35:23 UTC

This issue has been addressed in following products:

  Red Hat Enterprise Linux 7

Via RHSA-2014:0703 https://rhn.redhat.com/errata/RHSA-2014-0703.html