Debian DSA-2613-1 : rails - insufficient input validation - Nessus

High Plugin ID: 64364

This page contains detailed information about the Debian DSA-2613-1 : rails - insufficient input validation 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: 64364
Name: Debian DSA-2613-1 : rails - insufficient input validation
Filename: debian_DSA-2613.nasl
Vulnerability Published: N/A
This Plugin Published: 2013-01-31
Last Modification Time: 2021-01-11
Plugin Version: 1.11
Plugin Type: local
Plugin Family: Debian Local Security Checks
Dependencies: ssh_get_info.nasl
Required KB Items [?]: Host/Debian/dpkg-l, Host/Debian/release, Host/local_checks_enabled

Vulnerability Information

Severity: High
Vulnerability Published: N/A
Patch Published: 2013-01-29
CVE [?]: CVE-2013-0333
CPE [?]: cpe:/o:debian:debian_linux:6.0, p-cpe:/a:debian:debian_linux:rails

Synopsis

The remote Debian host is missing a security-related update.

Description

Lawrence Pit discovered that Ruby on Rails, a web development framework, is vulnerable to a flaw in the parsing of JSON to YAML. Using a specially crafted payload attackers can trick the backend into decoding a subset of YAML.

The vulnerability has been addressed by removing the YAML backend and adding the OkJson backend.

Solution

Upgrade the rails packages.

For the stable distribution (squeeze), this problem has been fixed in version 2.3.5-1.2+squeeze6.

The 3.2 version of rails as found in Debian wheezy and sid is not affected by the problem.

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 Debian DSA-2613-1 : rails - insufficient input validation 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 Debian Security Advisory DSA-2613. The text 
# itself is copyright (C) Software in the Public Interest, Inc.
#

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

if (description)
{
  script_id(64364);
  script_version("1.11");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/01/11");

  script_cve_id("CVE-2013-0333");
  script_bugtraq_id(57575);
  script_xref(name:"DSA", value:"2613");

  script_name(english:"Debian DSA-2613-1 : rails - insufficient input validation");
  script_summary(english:"Checks dpkg output for the updated package");

  script_set_attribute(
    attribute:"synopsis", 
    value:"The remote Debian host is missing a security-related update."
  );
  script_set_attribute(
    attribute:"description", 
    value:
"Lawrence Pit discovered that Ruby on Rails, a web development
framework, is vulnerable to a flaw in the parsing of JSON to YAML.
Using a specially crafted payload attackers can trick the backend into
decoding a subset of YAML.

The vulnerability has been addressed by removing the YAML backend and
adding the OkJson backend."
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=699226"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://packages.debian.org/source/squeeze/rails"
  );
  script_set_attribute(
    attribute:"see_also",
    value:"https://www.debian.org/security/2013/dsa-2613"
  );
  script_set_attribute(
    attribute:"solution", 
    value:
"Upgrade the rails packages.

For the stable distribution (squeeze), this problem has been fixed in
version 2.3.5-1.2+squeeze6.

The 3.2 version of rails as found in Debian wheezy and sid is not
affected by the problem."
  );
  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:debian:debian_linux:rails");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:6.0");

  script_set_attribute(attribute:"patch_publication_date", value:"2013/01/29");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/01/31");
  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:"Debian Local Security Checks");

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/Debian/release", "Host/Debian/dpkg-l");

  exit(0);
}


include("audit.inc");
include("debian_package.inc");


if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (!get_kb_item("Host/Debian/release")) audit(AUDIT_OS_NOT, "Debian");
if (!get_kb_item("Host/Debian/dpkg-l")) audit(AUDIT_PACKAGE_LIST_MISSING);


flag = 0;
if (deb_check(release:"6.0", prefix:"libactionmailer-ruby", reference:"2.3.5-1.2+squeeze6")) flag++;
if (deb_check(release:"6.0", prefix:"libactionmailer-ruby1.8", reference:"2.3.5-1.2+squeeze6")) flag++;
if (deb_check(release:"6.0", prefix:"libactionpack-ruby", reference:"2.3.5-1.2+squeeze6")) flag++;
if (deb_check(release:"6.0", prefix:"libactionpack-ruby1.8", reference:"2.3.5-1.2+squeeze6")) flag++;
if (deb_check(release:"6.0", prefix:"libactiverecord-ruby", reference:"2.3.5-1.2+squeeze6")) flag++;
if (deb_check(release:"6.0", prefix:"libactiverecord-ruby1.8", reference:"2.3.5-1.2+squeeze6")) flag++;
if (deb_check(release:"6.0", prefix:"libactiverecord-ruby1.9.1", reference:"2.3.5-1.2+squeeze6")) flag++;
if (deb_check(release:"6.0", prefix:"libactiveresource-ruby", reference:"2.3.5-1.2+squeeze6")) flag++;
if (deb_check(release:"6.0", prefix:"libactiveresource-ruby1.8", reference:"2.3.5-1.2+squeeze6")) flag++;
if (deb_check(release:"6.0", prefix:"libactivesupport-ruby", reference:"2.3.5-1.2+squeeze6")) flag++;
if (deb_check(release:"6.0", prefix:"libactivesupport-ruby1.8", reference:"2.3.5-1.2+squeeze6")) flag++;
if (deb_check(release:"6.0", prefix:"libactivesupport-ruby1.9.1", reference:"2.3.5-1.2+squeeze6")) flag++;
if (deb_check(release:"6.0", prefix:"rails", reference:"2.3.5-1.2+squeeze6")) flag++;
if (deb_check(release:"6.0", prefix:"rails-doc", reference:"2.3.5-1.2+squeeze6")) flag++;
if (deb_check(release:"6.0", prefix:"rails-ruby1.8", reference:"2.3.5-1.2+squeeze6")) flag++;

if (flag)
{
  if (report_verbosity > 0) security_hole(port:0, extra:deb_report_get());
  else security_hole(0);
  exit(0);
}
else audit(AUDIT_HOST_NOT, "affected");

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

Linux / Unix:
/opt/nessus/lib/nessus/plugins/debian_DSA-2613.nasl
Windows:
C:\ProgramData\Tenable\Nessus\nessus\plugins\debian_DSA-2613.nasl
Mac OS X:
/Library/Nessus/run/lib/nessus/plugins/debian_DSA-2613.nasl

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How to Run

Here is how to run the Debian DSA-2613-1 : rails - insufficient input validation 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 Debian Local Security Checks plugin family.
On the right side table select Debian DSA-2613-1 : rails - insufficient input validation plugin ID 64364.
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 debian_DSA-2613.nasl -t <IP/HOST>

Run the plugin with audit trail message on the console:

/opt/nessus/bin/nasl -a debian_DSA-2613.nasl -t <IP/HOST>

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

/opt/nessus/bin/nasl -T - debian_DSA-2613.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 debian_DSA-2613.nasl -t <IP/HOST>

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References

BID | SecurityFocus Bugtraq ID:

57575

DSA | Debian Security Advisory:

2613

See also:

Similar and related Nessus plugins:

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)
64281 - RHEL 6 : rubygem-activesupport in Subscription Asset Manager (RHSA-2013:0201)
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 debian_DSA-2613.nasl version 1.11. For more plugins, visit the Nessus Plugin Library.

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Debian DSA-2613-1 : rails - insufficient input validation - Nessus

Plugin Overview

Vulnerability Information

Synopsis

Description

Solution

Public Exploits

Risk Information

Plugin Source

How to Run

References

Version

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