Scientific Linux Security Update : ruby on SL4.x i386/x86_64

This script is Copyright (C) 2012 Tenable Network Security, Inc.


Synopsis :

The remote Scientific Linux host is missing one or more security
updates.

Description :

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)

It was found that WEBrick (the Ruby HTTP server toolkit) did not
filter terminal escape sequences from its log files. A remote attacker
could use specially-crafted HTTP requests to inject terminal escape
sequences into the WEBrick log files. If a victim viewed the log files
with a terminal emulator, it could result in control characters being
executed with the privileges of that user. (CVE-2009-4492)

A cross-site scripting (XSS) flaw was found in the way WEBrick
displayed error pages. A remote attacker could use this flaw to
perform a cross-site scripting attack against victims by tricking them
into visiting a specially-crafted URL. (CVE-2010-0541)

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.

See also :

http://www.nessus.org/u?d8ef6234

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 61075 ()

Bugtraq ID:

CVE ID: CVE-2009-4492
CVE-2010-0541
CVE-2011-0188
CVE-2011-1005