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Mandriva Linux Security Advisory 2014-079

Mandriva Linux Security Advisory 2014-079
Posted Apr 17, 2014
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2014-079 - Florian Weimer reported that the printbuf APIs used in the json-c library used ints for counting buffer lengths, which is inappropriate for 32bit architectures. These functions need to be changed to using size_t if possible for sizes, or to be hardened against negative values if not. This could be used to cause a denial of service in an application linked to the json-c library. 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.

tags | advisory, denial of service
systems | linux, mandriva
advisories | CVE-2013-6370, CVE-2013-6371
SHA-256 | 283252a26796384c39dbaf9c5eebd109cce41ade7c0422b68ccb6e4ff62aa236

Mandriva Linux Security Advisory 2014-079

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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

_______________________________________________________________________

Mandriva Linux Security Advisory MDVSA-2014:079
http://www.mandriva.com/en/support/security/
_______________________________________________________________________

Package : json-c
Date : April 17, 2014
Affected: Business Server 1.0
_______________________________________________________________________

Problem Description:

Updated json-c packages fix security vulnerabilities:

Florian Weimer reported that the printbuf APIs used in the json-c
library used ints for counting buffer lengths, which is inappropriate
for 32bit architectures. These functions need to be changed to using
size_t if possible for sizes, or to be hardened against negative
values if not. This could be used to cause a denial of service in
an application linked to the json-c library (CVE-2013-6370).

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 (CVE-2013-6371).
_______________________________________________________________________

References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6370
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-6371
http://advisories.mageia.org/MGASA-2014-0175.html
_______________________________________________________________________

Updated Packages:

Mandriva Business Server 1/X86_64:
f799ac04871a5044f8c8c4802f29f33a mbs1/x86_64/lib64json2-0.11-1.1.mbs1.x86_64.rpm
9c7a7e290ebd91a7fc071f04e0abe340 mbs1/x86_64/lib64json-devel-0.11-1.1.mbs1.x86_64.rpm
f3c134fa6a2ee59590340ab94dfa079d mbs1/SRPMS/json-c-0.11-1.1.mbs1.src.rpm
_______________________________________________________________________

To upgrade automatically use MandrivaUpdate or urpmi. The verification
of md5 checksums and GPG signatures is performed automatically for you.

All packages are signed by Mandriva for security. You can obtain the
GPG public key of the Mandriva Security Team by executing:

gpg --recv-keys --keyserver pgp.mit.edu 0x22458A98

You can view other update advisories for Mandriva Linux at:

http://www.mandriva.com/en/support/security/advisories/

If you want to report vulnerabilities, please contact

security_(at)_mandriva.com
_______________________________________________________________________

Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Mandriva Security Team
<security*mandriva.com>
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