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

High Plugin ID: 64281

This page contains detailed information about the RHEL 6 : rubygem-activesupport in Subscription Asset Manager (RHSA-2013:0201) Nessus plugin including available exploits and PoCs found on GitHub, in Metasploit or Exploit-DB for verifying of this vulnerability.

Table Of Contents

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Plugin Overview
Vulnerability Information

Synopsis
Description
Solution

Public Exploits
Risk Information
Plugin Source
How to Run
References
Version

Plugin Overview

ID: 64281
Name: RHEL 6 : rubygem-activesupport in Subscription Asset Manager (RHSA-2013:0201)
Filename: redhat-RHSA-2013-0201.nasl
Vulnerability Published: 2013-01-30
This Plugin Published: 2013-01-29
Last Modification Time: 2021-01-14
Plugin Version: 1.19
Plugin Type: local
Plugin Family: Red Hat Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/cpu, Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Vulnerability Information

Severity: High
Vulnerability Published: 2013-01-30
Patch Published: 2013-01-28
CVE [?]: CVE-2013-0333
CPE [?]: cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:redhat:enterprise_linux:rubygem-activesupport

Synopsis

The remote Red Hat host is missing a security update.

Description

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.

Solution

Update the affected rubygem-activesupport package.

Public Exploits

Target Network Port(s): N/A
Target Asset(s): N/A
Exploit Available: True (Metasploit Framework, Exploit-DB, GitHub)
Exploit Ease: Exploits are available

Here's the list of publicly known exploits and PoCs for verifying the RHEL 6 : rubygem-activesupport in Subscription Asset Manager (RHSA-2013:0201) vulnerability:

Metasploit: exploit/multi/http/rails_json_yaml_code_exec
[Ruby on Rails JSON Processor YAML Deserialization Code Execution]
Metasploit: auxiliary/scanner/http/rails_json_yaml_scanner
[Ruby on Rails JSON Processor YAML Deserialization Scanner]
Exploit-DB: exploits/multiple/remote/24434.rb
[EDB-24434: Ruby on Rails - JSON Processor YAML Deserialization Code Execution (Metasploit)]
GitHub: https://github.com/Fa1c0n35/Web-CTF-Cheatshee
[CVE-2013-0333]
GitHub: https://github.com/duckstroms/Web-CTF-Cheatsheet
[CVE-2013-0333]
GitHub: https://github.com/heroku/heroku-CVE-2013-0333
[CVE-2013-0333]
GitHub: https://github.com/mengdaya/Web-CTF-Cheatsheet
[CVE-2013-0333]
GitHub: https://github.com/w181496/Web-CTF-Cheatsheet
[CVE-2013-0333]

Before running any exploit against any system, make sure you are authorized by the owner of the target system(s) to perform such activity. In any other case, this would be considered as an illegal activity.

WARNING: Beware of using unverified exploits from sources such as GitHub or Exploit-DB. These exploits and PoCs could contain malware. For more information, see how to use exploits safely.

Risk Information

CVSS V2 Vector [?]: AV:N/AC:L/Au:N/C:P/I:P/A:P/E:F/RL:OF/RC:C

CVSS Base Score:	7.5 (High)
Impact Subscore:	6.4
Exploitability Subscore:	10.0
CVSS Temporal Score:	6.2 (Medium)
CVSS Environmental Score:	NA (None)
Modified Impact Subscore:	NA
Overall CVSS Score:	6.2 (Medium)

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Plugin Source

#%NASL_MIN_LEVEL 70300
#
# (C) Tenable Network Security, Inc.
#
# The descriptive text and package checks in this plugin were  
# extracted from Red Hat Security Advisory RHSA-2013:0201. The text 
# itself is copyright (C) Red Hat, Inc.
#

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(64281);
  script_version("1.19");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/14");

  script_cve_id("CVE-2013-0333");
  script_xref(name:"RHSA", value:"2013:0201");

  script_name(english:"RHEL 6 : rubygem-activesupport in Subscription Asset Manager (RHSA-2013:0201)");
  script_summary(english:"Checks the rpm output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Red Hat host is missing a security update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"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."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/errata/RHSA-2013:0201"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://access.redhat.com/security/cve/cve-2013-0333"
  );
  script_set_attribute(
    attribute:"solution", 
    value:"Update the affected rubygem-activesupport package."
  );
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_set_attribute(attribute:"metasploit_name", value:'Ruby on Rails JSON Processor YAML Deserialization Code Execution');
  script_set_attribute(attribute:"exploit_framework_metasploit", value:"true");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:rubygem-activesupport");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:6");

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/01/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/01/28");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/01/29");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_copyright(english:"This script is Copyright (C) 2013-2021 and is owned by Tenable, Inc. or an Affiliate thereof.");
  script_family(english:"Red Hat Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/RedHat/release", "Host/RedHat/rpm-list", "Host/cpu");

  exit(0);
}


include("audit.inc");
include("global_settings.inc");
include("misc_func.inc");
include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
release = get_kb_item("Host/RedHat/release");
if (isnull(release) || "Red Hat" >!< release) audit(AUDIT_OS_NOT, "Red Hat");
os_ver = pregmatch(pattern: "Red Hat Enterprise Linux.*release ([0-9]+(\.[0-9]+)?)", string:release);
if (isnull(os_ver)) audit(AUDIT_UNKNOWN_APP_VER, "Red Hat");
os_ver = os_ver[1];
if (! preg(pattern:"^6([^0-9]|$)", string:os_ver)) audit(AUDIT_OS_NOT, "Red Hat 6.x", "Red Hat " + os_ver);

if (!get_kb_item("Host/RedHat/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "s390" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "Red Hat", cpu);

yum_updateinfo = get_kb_item("Host/RedHat/yum-updateinfo");
if (!empty_or_null(yum_updateinfo)) 
{
  rhsa = "RHSA-2013:0201";
  yum_report = redhat_generate_yum_updateinfo_report(rhsa:rhsa);
  if (!empty_or_null(yum_report))
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : yum_report 
    );
    exit(0);
  }
  else
  {
    audit_message = "affected by Red Hat security advisory " + rhsa;
    audit(AUDIT_OS_NOT, audit_message);
  }
}
else
{
  flag = 0;

  if (! (rpm_exists(release:"RHEL6", rpm:"candlepin-"))) audit(AUDIT_PACKAGE_NOT_INSTALLED, "Subscription Asset Manager");

  if (rpm_check(release:"RHEL6", reference:"rubygem-activesupport-3.0.10-7.el6cf")) flag++;

  if (flag)
  {
    security_report_v4(
      port       : 0,
      severity   : SECURITY_HOLE,
      extra      : rpm_report_get() + redhat_report_package_caveat()
    );
    exit(0);
  }
  else
  {
    tested = pkg_tests_get();
    if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
    else audit(AUDIT_PACKAGE_NOT_INSTALLED, "rubygem-activesupport");
  }
}

The latest version of this script can be found in these locations depending on your platform:

Linux / Unix:
/opt/nessus/lib/nessus/plugins/redhat-RHSA-2013-0201.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\redhat-RHSA-2013-0201.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/redhat-RHSA-2013-0201.nasl

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How to Run

Here is how to run the RHEL 6 : rubygem-activesupport in Subscription Asset Manager (RHSA-2013:0201) as a standalone plugin via the Nessus web user interface (https://localhost:8834/):

Click to start a New Scan.
Select Advanced Scan.
Navigate to the Plugins tab.
On the top right corner click to Disable All plugins.
On the left side table select Red Hat Local Security Checks plugin family.
On the right side table select RHEL 6 : rubygem-activesupport in Subscription Asset Manager (RHSA-2013:0201) plugin ID 64281.
Specify the target on the Settings tab and click to Save the scan.
Run the scan.

Here are a few examples of how to run the plugin in the command line. Note that the examples below demonstrate the usage on the Linux / Unix platform.

Basic usage:

/opt/nessus/bin/nasl redhat-RHSA-2013-0201.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a redhat-RHSA-2013-0201.nasl -t <IP/HOST>

Run the plugin with trace script execution written to the console (useful for debugging):

/opt/nessus/bin/nasl -T - redhat-RHSA-2013-0201.nasl -t <IP/HOST>

Run the plugin with using a state file for the target and updating it (useful for running multiple plugins on the target):

/opt/nessus/bin/nasl -K /tmp/state redhat-RHSA-2013-0201.nasl -t <IP/HOST>

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References

RHSA | Red Hat Security Advisory:

2013:0201

See also:

Similar and related Nessus plugins:

64364 - Debian DSA-2613-1 : rails - insufficient input validation
64540 - Fedora 17 : rubygem-activesupport-3.0.11-8.fc17 (2013-1710)
64542 - Fedora 16 : rubygem-activesupport-3.0.10-6.fc16 (2013-1745)
79981 - GLSA-201412-28 : Ruby on Rails: Multiple vulnerabilities
65578 - Mac OS X Multiple Vulnerabilities (Security Update 2013-001)
66809 - Mac OS X Multiple Vulnerabilities (Security Update 2013-002)
64476 - Mac OS X : OS X Server < 2.2.1 Multiple Vulnerabilities
74881 - openSUSE Security Update : ruby (openSUSE-SU-2013:0278-1)
119430 - RHEL 6 : rubygem-activesupport (RHSA-2013:0202)

Version

This page has been produced using Nessus Professional 10.1.2 (#68) LINUX, Plugin set 202205072148.
Plugin file redhat-RHSA-2013-0201.nasl version 1.19. For more plugins, visit the Nessus Plugin Library.

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

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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