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Sicherheit: Denial of Service in Jansson
Aktuelle Meldungen Distributionen
Name: Denial of Service in Jansson
ID: FEDORA-2014-3778
Distribution: Fedora
Plattformen: Fedora 20
Datum: Mo, 24. März 2014, 10:37
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6401
Applikationen: Jansson

Originalnachricht

Name        : jansson
Product : Fedora 20
Version : 2.6
Release : 1.fc20
URL : http://www.digip.org/jansson/
Summary : C library for encoding, decoding and manipulating JSON data
Description :
Small library for parsing and writing JSON documents.

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Update Information:

Florian Weimer of the Red Hat Product Security Team found that the
hashing implementation in Jansson, a library for encoding, decoding and
manipulating JSON data, was susceptible to predictable hash collisions.

A remote attacker could use this flaw to cause an application using Jansson to
use an excessive amount of CPU time by sending a crafted JSON document containing a large number of parameters whose names map to the same hash value. (CVE-2013-6401)

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ChangeLog:

* Thu Feb 13 2014 Jared Smith <jsmith@fedoraproject.org> - 2.6-1
- Update to Jansson 2.6 for CVE-2013-6401
* Sat Jan 25 2014 Jiri Pirko <jpirko@redhat.com> 2.5-1
- Update to Jansson 2.5.
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References:

[ 1 ] Bug #1063817 - CVE-2013-6401 jansson: hash table collisions CPU usage
DoS [fedora-all]
https://bugzilla.redhat.com/show_bug.cgi?id=1063817
[ 2 ] Bug #1064201 - jansson-2.6 is available
https://bugzilla.redhat.com/show_bug.cgi?id=1064201
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This update can be installed with the "yum" update program. Use
su -c 'yum update jansson' at the command line.
For more information, refer to "Managing Software with yum",
available at http://docs.fedoraproject.org/yum/.

All packages are signed with the Fedora Project GPG key. More details on the
GPG keys used by the Fedora Project can be found at
https://fedoraproject.org/keys
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