Detections
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CentOS 6 : ruby (CESA-2013:0612)
medium Nessus Plugin ID 65166
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Synopsis
The remote CentOS host is missing one or more security updates.Description
Updated ruby packages that fix two security issues are now available for Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.
Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to do system management tasks.
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)
It was found that the RHSA-2011:0910 update did not correctly fix the CVE-2011-1005 issue, a flaw 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-2012-4481)
The CVE-2012-4481 issue was discovered by Vit Ondruch of Red Hat.
All users of Ruby are advised to upgrade to these updated packages, which contain backported patches to resolve these issues.
Solution
Update the affected ruby packages.See Also
Plugin Details
Severity: Medium
ID: 65166
File Name: centos_RHSA-2013-0612.nasl
Version: 1.13
Type: local
Agent: unix
Family: CentOS Local Security Checks
Published: 3/10/2013
Updated: 1/4/2021
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.4
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS Score Source: CVE-2013-1821
Vulnerability Information
CPE: p-cpe:/a:centos:centos:ruby-devel, p-cpe:/a:centos:centos:ruby-libs, p-cpe:/a:centos:centos:ruby-rdoc, cpe:/o:centos:centos:6, p-cpe:/a:centos:centos:ruby-static, p-cpe:/a:centos:centos:ruby-docs, p-cpe:/a:centos:centos:ruby-irb, p-cpe:/a:centos:centos:ruby-ri, p-cpe:/a:centos:centos:ruby-tcltk, p-cpe:/a:centos:centos:ruby
Required KB Items: Host/local_checks_enabled, Host/CentOS/release, Host/CentOS/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 3/8/2013
Vulnerability Publication Date: 4/9/2013
Reference Information
CVE: CVE-2012-4481, CVE-2013-1821
RHSA: 2013:0612