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Mandriva Linux Security Advisory 2013-124

Mandriva Linux Security Advisory 2013-124
Posted Apr 11, 2013
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2013-124 - Shugo Maedo and Vit Ondruch discovered that Ruby incorrectly allowed untainted strings to be modified in protective safe levels. An attacker could use this flaw to bypass intended access restrictions. It was discovered that Ruby's REXML library did not properly restrict XML entity expansion. An attacker could use this flaw to cause a denial of service by tricking a Ruby application using REXML to read text nodes from specially-crafted XML content, which will result in REXML consuming large amounts of system memory.

tags | advisory, denial of service, ruby
systems | linux, mandriva
advisories | CVE-2012-4466, CVE-2012-4481, CVE-2013-1821
SHA-256 | 3e2e417902b29eb528c22b29313b488fc00b3906282a6db4beb95befcf297016

Mandriva Linux Security Advisory 2013-124

Change Mirror Download
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Hash: SHA1

_______________________________________________________________________

Mandriva Linux Security Advisory MDVSA-2013:124
http://www.mandriva.com/en/support/security/
_______________________________________________________________________

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

Problem Description:

Updated ruby packages fix security vulnerabilities:

Shugo Maedo and Vit Ondruch discovered that Ruby incorrectly allowed
untainted strings to be modified in protective safe levels. An
attacker could use this flaw to bypass intended access restrictions
(CVE-2012-4466, CVE-2012-4481).

It was discovered that Ruby's REXML library did not properly restrict
XML entity expansion. An attacker could use this flaw to cause a
denial of service by tricking a Ruby application using REXML to read
text nodes from specially-crafted XML content, which will result in
REXML consuming large amounts of system memory (CVE-2013-1821).
_______________________________________________________________________

References:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-4466
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2012-4481
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1821
https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0294
https://wiki.mageia.org/en/Support/Advisories/MGASA-2013-0092
_______________________________________________________________________

Updated Packages:

Mandriva Business Server 1/X86_64:
eca1de4cfdf664a3df54083f7019eef6 mbs1/x86_64/ruby-1.8.7.p358-2.1.mbs1.x86_64.rpm
7f4d4820b8c8908e91be5cfcf4bf21ae mbs1/x86_64/ruby-devel-1.8.7.p358-2.1.mbs1.x86_64.rpm
80079bf97c8414ad733a275cabf3d5e5 mbs1/x86_64/ruby-doc-1.8.7.p358-2.1.mbs1.noarch.rpm
67f5798cb1e05bf34533e2b7a41c938e mbs1/x86_64/ruby-tk-1.8.7.p358-2.1.mbs1.x86_64.rpm
b7c67e8c2262b2204aa8ad8a6d8b87a7 mbs1/SRPMS/ruby-1.8.7.p358-2.1.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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