RHEL 6 : rubygem-activesupport in Subscription Asset Manager (RHSA-2013:0201)

High Nessus Plugin ID 64281


The remote Red Hat host is missing a security update.


An updated rubygem-activesupport package that fixes one security issue is now available for Red Hat Subscription Asset Manager.

The Red Hat Security Response Team has rated this update as having critical security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section.

Ruby on Rails is a model-view-controller (MVC) framework for web application development. Active Support provides support and utility classes used by the Ruby on Rails framework.

A flaw was found in the way Active Support performed the parsing of JSON requests by translating them to YAML. A remote attacker could use this flaw to execute arbitrary code with the privileges of a Ruby on Rails application, perform SQL injection attacks, or bypass the authentication using a specially-created JSON request. (CVE-2013-0333)

Red Hat would like to thank Ruby on Rails upstream for reporting this issue. Upstream acknowledges Lawrence Pit of Mirror42 as the original reporter.

Users of Red Hat Subscription Asset Manager are advised to upgrade to this updated package, which resolves this issue. Katello must be restarted ('service katello restart') for this update to take effect.


Update the affected rubygem-activesupport package.

See Also



Plugin Details

Severity: High

ID: 64281

File Name: redhat-RHSA-2013-0201.nasl

Version: $Revision: 1.11 $

Type: local

Agent: unix

Published: 2013/01/29

Modified: 2017/01/05

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.5

Temporal Score: 6.2

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:F/RL:OF/RC:ND

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:rubygem-activesupport, cpe:/o:redhat:enterprise_linux:6

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2013/01/28

Exploitable With

Metasploit (Ruby on Rails JSON Processor YAML Deserialization Code Execution)

Reference Information

CVE: CVE-2013-0333

OSVDB: 89594

RHSA: 2013:0201