Scientific Linux: CVE-2011-1004 Moderate: Ruby Memory Corruption Risk

Date: Wed, 29 Jun 2011 09:25:01 -0500
Reply-To: Troy Dawson 
Sender: Security Errata for Scientific Linux
 
From: Troy Dawson 
Subject: Security ERRATA Moderate: ruby on SL6.x i386/x86_64
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Synopsis: Moderate: ruby security update
Issue Date: 2011-06-28
CVE Numbers: CVE-2011-1004
 CVE-2011-1005
 CVE-2011-0188

Ruby is an extensible, interpreted, object-oriented, scripting language.
It has features to process text files and to do system management tasks.

A flaw was found in the way large amounts of memory were allocated on
64-bit systems when using the BigDecimal class. A context-dependent
attacker could use this flaw to cause memory corruption, causing a Ruby
application that uses the BigDecimal class to crash or, possibly,
execute arbitrary code. This issue did not affect 32-bit systems.
(CVE-2011-0188)

A race condition flaw was found in the remove system entries method in
the FileUtils module. If a local user ran a Ruby script that uses this
method, a local attacker could use this flaw to delete arbitrary files
and directories accessible to that user via a symbolic link attack.
(CVE-2011-1004)

A flaw was found in the method for translating an exception message into
a string in the Exception class. A remote attacker could use this flaw
to bypass safe level 4 restrictions, allowing untrusted (tainted) code
to modify arbitrary, trusted (untainted) strings, which safe level 4
restrictions would otherwise prevent. (CVE-2011-1005)

All Ruby users should upgrade to these updated packages, which contain
backported patches to resolve these issues.

SL6:
 i386
 ruby-1.8.7.299-7.el6_1.1.i686.rpm
 ruby-tcltk-1.8.7.299-7.el6_1.1.i686.rpm
 ruby-static-1.8.7.299-7.el6_1.1.i686.rpm
 ruby-ri-1.8.7.299-7.el6_1.1.i686.rpm
 ruby-rdoc-1.8.7.299-7.el6_1.1.i686.rpm
 ruby-libs-1.8.7.299-7.el6_1.1.i686.rpm
 ruby-irb-1.8.7.299-7.el6_1.1.i686.rpm
 ruby-docs-1.8.7.299-7.el6_1.1.i686.rpm
 ruby-devel-1.8.7.299-7.el6_1.1.i686.rpm
 x86_64
 ruby-libs-1.8.7.299-7.el6_1.1.i686.rpm
 ruby-libs-1.8.7.299-7.el6_1.1.x86_64.rpm
 ruby-rdoc-1.8.7.299-7.el6_1.1.x86_64.rpm
 ruby-ri-1.8.7.299-7.el6_1.1.x86_64.rpm
 ruby-static-1.8.7.299-7.el6_1.1.x86_64.rpm
 ruby-irb-1.8.7.299-7.el6_1.1.x86_64.rpm
 ruby-docs-1.8.7.299-7.el6_1.1.x86_64.rpm
 ruby-devel-1.8.7.299-7.el6_1.1.x86_64.rpm
 ruby-devel-1.8.7.299-7.el6_1.1.i686.rpm
 ruby-1.8.7.299-7.el6_1.1.x86_64.rpm
 ruby-tcltk-1.8.7.299-7.el6_1.1.x86_64.rpm

- Scientific Linux Development Team