Vulnerabilities > CVE-2013-4961 - Information Exposure vulnerability in Puppet Enterprise

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
PARTIAL
Integrity impact
NONE
Availability impact
NONE
network
low complexity
puppet
CWE-200
nessus

Summary

Puppet Enterprise before 3.0.1 includes version information for the Apache and Phusion Passenger products in its HTTP response headers, which allows remote attackers to obtain sensitive information.

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Subverting Environment Variable Values
    The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
  • Footprinting
    An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
  • Exploiting Trust in Client (aka Make the Client Invisible)
    An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
  • Browser Fingerprinting
    An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
  • Session Credential Falsification through Prediction
    This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.

Nessus

NASL familyCGI abuses
NASL idPUPPET_ENTERPRISE_301.NASL
descriptionAccording to its self-reported version number, the Puppet Enterprise install on the remote host is a version prior to 3.0.1. As a result, it reportedly has multiple vulnerabilities: - An error exists related to the included Ruby SSL client that could allow man-in-the-middle attacks. (CVE-2013-4073) - An error exists related to the
last seen2020-06-01
modified2020-06-02
plugin id70663
published2013-10-28
reporterThis script is Copyright (C) 2013-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/70663
titlePuppet Enterprise < 3.0.1 Multiple Vulnerabilities
code
#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(70663);
  script_version("1.8");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/06/12");

  script_cve_id(
    "CVE-2013-4073",
    "CVE-2013-4761",
    "CVE-2013-4762",
    "CVE-2013-4955",
    "CVE-2013-4956",
    "CVE-2013-4958",
    "CVE-2013-4959",
    "CVE-2013-4961",
    "CVE-2013-4962",
    "CVE-2013-4963",
    "CVE-2013-4964",
    "CVE-2013-4967",
    "CVE-2013-4968"
  );
  script_bugtraq_id(
    60843,
    61805,
    61806,
    61856,
    61857,
    61859,
    61860,
    61861,
    61862,
    61870,
    61945,
    61949,
    66541
  );

  script_name(english:"Puppet Enterprise < 3.0.1 Multiple Vulnerabilities");
  script_summary(english:"Checks puppet enterprise version");

  script_set_attribute(
    attribute:"synopsis",
    value:"A web application on the remote host has multiple vulnerabilities."
  );
  script_set_attribute(
    attribute:"description",
    value:
"According to its self-reported version number, the Puppet Enterprise
install on the remote host is a version prior to 3.0.1.  As a result,
it reportedly has multiple vulnerabilities:

  - An error exists related to the included Ruby SSL client
    that could allow man-in-the-middle attacks.
    (CVE-2013-4073)

  - An error exists related to the 'resource_type' service
    that could allow a local attacker to cause arbitrary
    Ruby files to be executed. (CVE-2013-4761)

  - Multiple session vulnerabilities exist that could
    allow an attacker to hijack an arbitrary session and
    gain unauthorized access. (CVE-2013-4762, CVE-2013-4964)

  - An error exists related to 'Puppet Module Tool' (PMT)
    and improper permissions. (CVE-2013-4956)

  - Multiple security bypass vulnerabilities exist that
    could allow an attacker to gain unauthorized access
    and perform sensitive transactions. (CVE-2013-4958,
    CVE-2013-4962)

  - Multiple information disclosure vulnerabilities exist
    that could allow an attacker to access sensitive
    information such as server software versions, MAC
    addresses, SSH keys, and database passwords.
    (CVE-2013-4959, CVE-2013-4961, CVE-2013-4967)

  - An open-redirection vulnerability exists that could
    allow an attacker to attempt a phishing attack.
    (CVE-2013-4955)

  - Clickjacking and cross-site-scripting vulnerabilities
    exist that could allow an attacker to trick users into
    sending them sensitive information such as passwords.
    (CVE-2013-4968)

  - A cross-site request forgery vulnerability exists that
    could allow an attacker to manipulate a logged in user's
    browser to perform sensitive transactions on the user's
    behalf. (CVE-2013-4963)"
  );
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/cve-2013-4073");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/cve-2013-4761");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/cve-2013-4762");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/cve-2013-4955");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/cve-2013-4956");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/cve-2013-4958");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/cve-2013-4959");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/cve-2013-4961");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/cve-2013-4962");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/cve-2013-4963");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/cve-2013-4964");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/cve-2013-4967");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/cve-2013-4968");
  script_set_attribute(attribute:"solution", value:"Upgrade to Puppet Enterprise 3.0.1 or later.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(20, 74, 79, 442, 629, 711, 712, 722, 725, 750, 751, 800, 801, 809, 811, 864, 900, 928, 931, 990);

  script_set_attribute(attribute:"vuln_publication_date", value:"2013/08/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2013/08/15");
  script_set_attribute(attribute:"plugin_publication_date", value:"2013/10/28");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:puppetlabs:puppet");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"CGI abuses");

  script_copyright(english:"This script is Copyright (C) 2013-2020 Tenable Network Security, Inc.");

  script_dependencies("puppet_rest_detect.nasl");
  script_require_keys("puppet/rest_port");

  exit(0);
}

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

##
# checks if the given version falls between the given bounds, and
# generates plugin output if it does
#
# @anonparam ver version to check
# @anonparam fix first fixed version
# @anonparam min_ver the lowest/earliest vulnerable version, relative to 'fix' (optional)
#
# @return plugin output if 'ver' is vulnerable relative to 'fix' and/or 'min_ver',
#         NULL otherwise
##
function _check_version(enterprise)
{
  local_var ver, fix, min_ver, major_ver, report;
  ver = _FCT_ANON_ARGS[0];
  fix = _FCT_ANON_ARGS[1];
  min_ver = _FCT_ANON_ARGS[2];

  if (
    # no lower bound
    (isnull(min_ver) &&
     ver_compare(ver:ver, fix:fix, strict:FALSE) < 0) ||

    # lower bound
    (!isnull(min_ver) &&
     ver_compare(ver:ver, fix:fix, strict:FALSE) < 0 &&
     ver_compare(ver:ver, fix:min_ver, strict:FALSE) >= 0)
  )
  {
    if (enterprise)
    {
      report =
        '\n  Installed version : Puppet Enterprise ' + ver +
        '\n  Fixed version : Puppet Enterprise ' + fix + '\n';
    }
    else
      report = NULL;
  }
  else report = NULL;

  return report;
}

port = get_kb_item_or_exit('puppet/rest_port');
ver = get_kb_item_or_exit('puppet/' + port + '/version');
report = NULL;
vuln = FALSE;

if ('Enterprise' >< ver)
{
  # convert something like
  #   2.7.19 (Puppet Enterprise 2.7.0)
  # to
  #   2.7.0
  match = eregmatch(string:ver, pattern:"Enterprise ([0-9.]+)\)");
  if (isnull(match))
    audit(AUDIT_UNKNOWN_WEB_APP_VER, 'Puppet Enterprise', build_url(port:port));
  else
    ver = match[1];

  # Resolved in Puppet Enterprise 3.0.1
  if (report = _check_version(ver, '3.0.1', enterprise:TRUE))
  {
    vuln = TRUE;
  }
}

if (!vuln) audit(AUDIT_LISTEN_NOT_VULN, 'Puppet', port, ver);

set_kb_item(name:'www/'+port+'/XSS', value:TRUE);
set_kb_item(name:"www/"+port+"/XSRF", value:TRUE);

if (report_verbosity > 0) security_warning(port:port, extra:report);
else security_warning(port);