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Mandriva Linux Security Advisory 2013-113

Mandriva Linux Security Advisory 2013-113
Posted Apr 11, 2013
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2013-113 - It was discovered that Perl's 'x' string repeat operator is vulnerable to a heap-based buffer overflow. An attacker could use this to execute arbitrary code. Various other issues were also addressed.

tags | advisory, overflow, arbitrary, perl
systems | linux, mandriva
advisories | CVE-2012-5195, CVE-2012-6329, CVE-2013-1667
SHA-256 | d121a52e5d21e1a1d884bfa0b4351192f0257e3310ec24006cce477233f1c93a

Mandriva Linux Security Advisory 2013-113

Change Mirror Download
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Hash: SHA1

_______________________________________________________________________

Mandriva Linux Security Advisory MDVSA-2013:113
http://www.mandriva.com/en/support/security/
_______________________________________________________________________

Package : perl
Date : April 10, 2013
Affected: Business Server 1.0
_______________________________________________________________________

Problem Description:

Updated perl packages fix security vulnerability:

It was discovered that Perl's 'x' string repeat operator is vulnerable
to a heap-based buffer overflow. An attacker could use this to execute
arbitrary code (CVE-2012-5195).

The _compile function in Maketext.pm in the Locale::Maketext
implementation in Perl before 5.17.7 does not properly handle
backslashes and fully qualified method names during compilation of
bracket notation, which allows context-dependent attackers to execute
arbitrary commands via crafted input to an application that accepts
translation strings from users (CVE-2012-6329).

In order to prevent an algorithmic complexity attack against
its hashing mechanism, perl will sometimes recalculate keys and
redistribute the contents of a hash. This mechanism has made perl
robust against attacks that have been demonstrated against other
systems. Research by Yves Orton has recently uncovered a flaw in the
rehashing code which can result in pathological behavior. This flaw
could be exploited to carry out a denial of service attack against
code that uses arbitrary user input as hash keys. Because using
user-provided strings as hash keys is a very common operation,
we urge users of perl to update their perl executable as soon
as possible. Updates to address this issue have bene pushed to
main-5.8, maint-5.10, maint-5.12, maint-5.14, and maint-5.16 branches
today. Vendors* were informed of this problem two weeks ago and
are expected to be shipping updates today (or otherwise very soon)
(CVE-2013-1667).
_______________________________________________________________________

References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-5195
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-6329
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1667
https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0352
https://wiki.mageia.org/en/Support/Advisories/MGASA-2013-0032
https://wiki.mageia.org/en/Support/Advisories/MGASA-2013-0094
_______________________________________________________________________

Updated Packages:

Mandriva Business Server 1/X86_64:
e010dd5d07ad358f78a421e97d158cc5 mbs1/x86_64/perl-5.14.2-8.1.mbs1.x86_64.rpm
2b935278aa38f3ed01fb4859036fc17a mbs1/x86_64/perl-base-5.14.2-8.1.mbs1.x86_64.rpm
8b2791b988a751ad818bbae21854bfe4 mbs1/x86_64/perl-devel-5.14.2-8.1.mbs1.x86_64.rpm
54a4521ed44b8728a1fa8af387d1e9c2 mbs1/x86_64/perl-doc-5.14.2-8.1.mbs1.noarch.rpm
c7d0a40057c4ec1d24baa9b605dea7cd mbs1/x86_64/perl-Locale-Maketext-1.220.0-2.1.mbs1.noarch.rpm
1e7634153853dabcec48738081b1c2ec mbs1/SRPMS/perl-5.14.2-8.1.mbs1.src.rpm
e1790a3f5f3c579ce1e5e0cb43cb6b08 mbs1/SRPMS/perl-Locale-Maketext-1.220.0-2.1.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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