Vulnerabilities > CVE-2016-5715 - Open Redirect vulnerability in Puppet Enterprise

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(95392);
  script_version("1.8");
  script_cvs_date("Date: 2019/11/14");

  script_cve_id("CVE-2016-5715");
  script_bugtraq_id(93846);

  script_name(english:"Puppet Enterprise 2015.x / 2016.x < 2016.4.0 Multiple Vulnerabilities");
  script_summary(english:"Checks the Puppet Enterprise version.");

  script_set_attribute(attribute:"synopsis", value:
"A web application running on the remote host is affected by multiple
vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version number, the Puppet Enterprise
application running on the remote host is version 2015.x or 2016.x
prior to 2016.4.0. It is, therefore, affected by the following 
vulnerabilities :

  - A cross-site redirection vulnerability exists within the
    /auth/login script due to improper validation of
    user-supplied input to the 'redirect' parameter in a GET
    request. An unauthenticated, remote attacker can exploit
    this issue, by convincing a user to follow a specially
    crafted link, to redirect the user to a website of the
    attacker's own choosing, which can then be used to
    conduct further attacks. Note that this vulnerability
    was thought to have been resolved by the fix for
    CVE-2015-6501, but the fix was incomplete. Puppet
    Enterprise 2016.4.0 includes a fix for this
    vulnerability. (CVE-2015-5715)

  - A flaw exists in the Puppet Enterprise Console due to
    unsafe string processing that allows an authenticated,
    remote attacker to execute arbitrary code.");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/docs/puppet/6.0/release_notes.html");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/cve-2016-5715");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/pe-console-oct-2016");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Puppet Enterprise version 2016.4.0 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-5715");

  script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/10/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/09/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2016/11/29");

  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) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("puppet_enterprise_console_detect.nasl", "puppet_rest_detect.nasl");
  script_require_keys("puppet/rest_port", "installed_sw/puppet_enterprise_console");

  exit(0);
}

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

# Make sure we detected a version 
port = get_kb_item_or_exit('puppet/rest_port');
ver = get_kb_item_or_exit('puppet/' + port + '/version');

# Make sure the Console service is running
get_kb_item_or_exit('installed_sw/puppet_enterprise_console');

min_ver = '4.2.1'; # aka 2015.2.0; earliest 2015.x
fix_ver = '4.7.0'; # aka 2016.4.0

if(ver_compare(ver:ver, fix:fix_ver, minver: min_ver, strict:FALSE) < 0)
{
  report =
    '\n  Installed version : Puppet Enterprise ' + ver +
    '\n  Fixed version     : Puppet Enterprise 4.7.0 (2016.4.0)'
    + '\n';
  
  security_report_v4(port:port, extra:report, severity:SECURITY_WARNING);
}
else
{
  audit(AUDIT_LISTEN_NOT_VULN, 'Puppet Enterprise', port, ver);
}

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(129764);
  script_version("1.3");
  script_cvs_date("Date: 2019/11/14");

  script_cve_id("CVE-2016-5715");
  script_bugtraq_id(93846);

  script_name(english:"Puppet Enterprise 2015.x / 2016.x < 2016.4.0 Multiple Vulnerabilities");
  script_summary(english:"Checks the Puppet Enterprise version.");

  script_set_attribute(attribute:"synopsis", value:
"A web application running on the remote host is affected by multiple
vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version number, the Puppet Enterprise
application running on the remote host is version 2015.x or 2016.x
prior to 2016.4.0. It is, therefore, affected by the following 
vulnerabilities :

  - A cross-site redirection vulnerability exists within the
    /auth/login script due to improper validation of
    user-supplied input to the 'redirect' parameter in a GET
    request. An unauthenticated, remote attacker can exploit
    this issue, by convincing a user to follow a specially
    crafted link, to redirect the user to a website of the
    attacker's own choosing, which can then be used to
    conduct further attacks. Note that this vulnerability
    was thought to have been resolved by the fix for
    CVE-2015-6501, but the fix was incomplete. Puppet
    Enterprise 2016.4.0 includes a fix for this
    vulnerability. (CVE-2016-5715)

  - A flaw exists in the Puppet Enterprise Console due to
    unsafe string processing that allows an authenticated,
    remote attacker to execute arbitrary code.");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/cve-2016-5715");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Puppet Enterprise version 2016.4.0 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-5715");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/10/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/10/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/09");

  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) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("puppet_enterprise_console_detect.nasl", "puppet_rest_detect.nasl");
  script_require_keys("puppet/rest_port", "installed_sw/puppet_enterprise_console");

  exit(0);
}

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

# Make sure we detected a version 
port = get_kb_item_or_exit('puppet/rest_port');
ver = get_kb_item_or_exit('puppet/' + port + '/version');

# Make sure the Console service is running
get_kb_item_or_exit('installed_sw/puppet_enterprise_console');

min_ver = '4.2.1'; # aka 2015.2.0; earliest 2015.x
fix_ver = '4.7.0'; # aka 2016.4.0

if(ver_compare(ver:ver, fix:fix_ver, minver: min_ver, strict:FALSE) < 0)
{
  report =
    '\n  Installed version : Puppet Enterprise ' + ver +
    '\n  Fixed version     : Puppet Enterprise 4.7.0 (2016.4.0)'
    + '\n';
  
  security_report_v4(port:port, extra:report, severity:SECURITY_WARNING);
}
else
{
  audit(AUDIT_LISTEN_NOT_VULN, 'Puppet Enterprise', port, ver);
}

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
  script_id(129754);
  script_version("1.3");
  script_cvs_date("Date: 2019/11/14");

  script_cve_id("CVE-2016-5714", "CVE-2016-5715");
  script_bugtraq_id(93846);

  script_name(english:"Puppet Enterprise < 2016.4.0 Multiple Vulnerabilities");
  script_summary(english:"Checks the Puppet Enterprise version.");

  script_set_attribute(attribute:"synopsis", value:
"A web application running on the remote host is affected by multiple
vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"According to its self-reported version number, the Puppet Enterprise
application running on the remote host is version 
prior to 2016.2.1. It is, therefore, affected by the following 
vulnerabilities :

  - An information disclosure vulnerability exists in the environment
    catalog component. An unauthenticated remote attacker can exploit 
    this issue to retrieve access to the enviroment catalogs which 
    may reveal sensitive information about infrastructure of application
    orchestration users.(CVE-2016-5714)

  - An url redirection vulnerability exists in the next page transition. 
    An unauthenticated remote attacker can exploit
    this issue to create believable phishing attacks.(CVE-2016-5715)");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/CVE-2016-5714");
  script_set_attribute(attribute:"see_also", value:"https://puppet.com/security/cve/CVE-2016-5715");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Puppet Enterprise version 2016.4.0 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2016-5714");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2016/10/20");
  script_set_attribute(attribute:"patch_publication_date", value:"2016/10/20");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/10/09");

  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) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("puppet_enterprise_console_detect.nasl", "puppet_rest_detect.nasl");
  script_require_keys("puppet/rest_port", "installed_sw/puppet_enterprise_console");

  exit(0);
}

include('vcf.inc');
include('http.inc');

app = 'Puppet REST API'; # we get both enterprise and open-source versions from the api...

# Make sure we detected a version 
port = get_kb_item_or_exit('puppet/rest_port');
ver = get_kb_item_or_exit('puppet/' + port + '/version');

# Make sure the Console service is running
get_kb_item_or_exit('installed_sw/puppet_enterprise_console');

app_info = vcf::get_app_info(app:app, port:port, webapp:TRUE, kb_ver: 'puppet/' + port + '/version');

# version info obtained from https://puppet.com/docs/pe/2016.2/overview_version_table.html
constraints = [
  {"min_version" : "3.0.0", "fixed_version" : "4.7.0", "fixed_display" : "Puppet Enterprise (2016.4.0)"}
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING);