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Mandriva Linux Security Advisory 2014-232

Mandriva Linux Security Advisory 2014-232
Posted Nov 28, 2014
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2014-232 - The function wordexp\(\) fails to properly handle the WRDE_NOCMD flag when processing arithmetic inputs in the form of $((... ``)) where ... can be anything valid. The backticks in the arithmetic expression are evaluated by in a shell even if WRDE_NOCMD forbade command substitution. This allows an attacker to attempt to pass dangerous commands via constructs of the above form, and bypass the WRDE_NOCMD flag. This update fixes the issue.

tags | advisory, shell
systems | linux, mandriva
advisories | CVE-2014-7817
SHA-256 | 3ae4a73075a4f65622957a8cedc74c98147406a7b1913f82ee05ab73b4ee0479

Mandriva Linux Security Advisory 2014-232

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

_______________________________________________________________________

Mandriva Linux Security Advisory MDVSA-2014:232
http://www.mandriva.com/en/support/security/
_______________________________________________________________________

Package : glibc
Date : November 27, 2014
Affected: Business Server 1.0
_______________________________________________________________________

Problem Description:

Updated glibc package fixes security vulnerability:

The function wordexp\(\) fails to properly handle the WRDE_NOCMD
flag when processing arithmetic inputs in the form of $((... ``))
where ... can be anything valid. The backticks in the arithmetic
epxression are evaluated by in a shell even if WRDE_NOCMD forbade
command substitution. This allows an attacker to attempt to pass
dangerous commands via constructs of the above form, and bypass the
WRDE_NOCMD flag. This update fixes the issue (CVE-2014-7817).
_______________________________________________________________________

References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-7817
http://advisories.mageia.org/MGASA-2014-0496.html
_______________________________________________________________________

Updated Packages:

Mandriva Business Server 1/X86_64:
87ae1aa0260d5f271b8a49df1ca96c92 mbs1/x86_64/glibc-2.14.1-12.10.mbs1.x86_64.rpm
fbdc85e27c41425f5f0faa17226e2fa4 mbs1/x86_64/glibc-devel-2.14.1-12.10.mbs1.x86_64.rpm
729c49b58fbb5ba6fb3ce703ec8d9353 mbs1/x86_64/glibc-doc-2.14.1-12.10.mbs1.noarch.rpm
a14e93fbabc854d6d913c20c33a7b060 mbs1/x86_64/glibc-doc-pdf-2.14.1-12.10.mbs1.noarch.rpm
b3f4903a52588c6b391ed234cacfc4fd mbs1/x86_64/glibc-i18ndata-2.14.1-12.10.mbs1.x86_64.rpm
1363d9159b189daaa0b4933e9d645480 mbs1/x86_64/glibc-profile-2.14.1-12.10.mbs1.x86_64.rpm
7a2f3ec56db9f916897338ce764b65ed mbs1/x86_64/glibc-static-devel-2.14.1-12.10.mbs1.x86_64.rpm
7941468822129b1034c7284a49539864 mbs1/x86_64/glibc-utils-2.14.1-12.10.mbs1.x86_64.rpm
dc952727199d879d209e102c2b938c3b mbs1/x86_64/nscd-2.14.1-12.10.mbs1.x86_64.rpm
5e1ca0b6bd6d1b095459d6e9de32e663 mbs1/SRPMS/glibc-2.14.1-12.10.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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