Bug 1032311 (CVE-2013-6371) - CVE-2013-6371 json-c: hash collision DoS
Summary: CVE-2013-6371 json-c: hash collision DoS
Alias: CVE-2013-6371
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1085676 1085677 1085678 1086209 1097036 1097037
Blocks: hashdos, oCERT-2011-003 1028485 1032325
TreeView+ depends on / blocked
Reported: 2013-11-20 00:20 UTC by Vincent Danen
Modified: 2023-05-12 01:40 UTC (History)
11 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2014-06-11 05:47:48 UTC

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2014:0703 0 normal SHIPPED_LIVE Moderate: json-c security update 2014-06-10 16:34:10 UTC

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.


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:


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

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