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Mandriva Linux Security Advisory 2015-102

Mandriva Linux Security Advisory 2015-102
Posted Mar 30, 2015
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2015-102 - 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 | 53220f408dd775184b66dbae8a641480a35b07f26f6e64a9d1156a34f96373cb

Mandriva Linux Security Advisory 2015-102

Change Mirror Download
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

_______________________________________________________________________

Mandriva Linux Security Advisory MDVSA-2015:102
http://www.mandriva.com/en/support/security/
_______________________________________________________________________

Package : json-c
Date : March 29, 2015
Affected: Business Server 2.0
_______________________________________________________________________

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 2/X86_64:
a01b51b861573f870676ada72574883b mbs2/x86_64/lib64json2-0.11-4.1.mbs2.x86_64.rpm
d0c95fd3e09d5ea552cc3d01b1bc53e9 mbs2/x86_64/lib64json-devel-0.11-4.1.mbs2.x86_64.rpm
e741ceb24b4557e0e1cc4faa11b094a4 mbs2/SRPMS/json-c-0.11-4.1.mbs2.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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