Vulnerabilities > CVE-2013-4958 - Improper Authentication vulnerability in Puppet Enterprise

047910
CVSS 0.0 - NONE
Attack vector
UNKNOWN
Attack complexity
UNKNOWN
Privileges required
UNKNOWN
Confidentiality impact
UNKNOWN
Integrity impact
UNKNOWN
Availability impact
UNKNOWN

Summary

Puppet Enterprise before 3.0.1 does not use a session timeout, which makes it easier for attackers to gain privileges by leveraging an unattended workstation.

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Authentication Abuse
    An attacker obtains unauthorized access to an application, service or device either through knowledge of the inherent weaknesses of an authentication mechanism, or by exploiting a flaw in the authentication scheme's implementation. In such an attack an authentication mechanism is functioning but a carefully controlled sequence of events causes the mechanism to grant access to the attacker. This attack may exploit assumptions made by the target's authentication procedures, such as assumptions regarding trust relationships or assumptions regarding the generation of secret values. This attack differs from Authentication Bypass attacks in that Authentication Abuse allows the attacker to be certified as a valid user through illegitimate means, while Authentication Bypass allows the user to access protected material without ever being certified as an authenticated user. This attack does not rely on prior sessions established by successfully authenticating users, as relied upon for the "Exploitation of Session Variables, Resource IDs and other Trusted Credentials" attack patterns.
  • 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.
  • Utilizing REST's Trust in the System Resource to Register Man in the Middle
    This attack utilizes a REST(REpresentational State Transfer)-style applications' trust in the system resources and environment to place man in the middle once SSL is terminated. Rest applications premise is that they leverage existing infrastructure to deliver web services functionality. An example of this is a Rest application that uses HTTP Get methods and receives a HTTP response with an XML document. These Rest style web services are deployed on existing infrastructure such as Apache and IIS web servers with no SOAP stack required. Unfortunately from a security standpoint, there frequently is no interoperable identity security mechanism deployed, so Rest developers often fall back to SSL to deliver security. In large data centers, SSL is typically terminated at the edge of the network - at the firewall, load balancer, or router. Once the SSL is terminated the HTTP request is in the clear (unless developers have hashed or encrypted the values, but this is rare). The attacker can utilize a sniffer such as Wireshark to snapshot the credentials, such as username and password that are passed in the clear once SSL is terminated. Once the attacker gathers these credentials, they can submit requests to the web service provider just as authorized user do. There is not typically an authentication on the client side, beyond what is passed in the request itself so once this is compromised, then this is generally sufficient to compromise the service's authentication scheme.
  • Man in the Middle Attack
    This type of attack targets the communication between two components (typically client and server). The attacker places himself in the communication channel between the two components. Whenever one component attempts to communicate with the other (data flow, authentication challenges, etc.), the data first goes to the attacker, who has the opportunity to observe or alter it, and it is then passed on to the other component as if it was never intercepted. This interposition is transparent leaving the two compromised components unaware of the potential corruption or leakage of their communications. The potential for Man-in-the-Middle attacks yields an implicit lack of trust in communication or identify between two components.

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);