Security Updates for Microsoft Dynamics 365 (on-premises) (April 2020)

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


# The descriptive text and package checks in this plugin were  
# extracted from the Microsoft Security Updates API. The text
# itself is copyright (C) Microsoft Corporation.
#


include('compat.inc');

if (description)
{
  script_id(135590);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/05/15");

  script_cve_id("CVE-2020-1049", "CVE-2020-1050");
  script_xref(name:"MSKB", value:"4538593");
  script_xref(name:"MSFT", value:"MS20-4538593");
  script_xref(name:"IAVA", value:"2020-A-0160-S");

  script_name(english:"Security Updates for Microsoft Dynamics 365 (on-premises) (April 2020)");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Dynamics 365 (on-premises) is affected by a cross site scripiting vulnerability.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Dynamics 365 (on-premises) is missing security
updates. It is, therefore, affected by the following 
vulnerability:

  - A cross site scripting vulnerability exists when
    Microsoft Dynamics 365 (on-premises) does not properly
    sanitize a specially crafted web request to an affected
    Dynamics server. An authenticated attacker could exploit
    the vulnerability by sending a specially crafted request
    to an affected Dynamics server. 

    The attacker who successfully exploited the vulnerability 
    could then perform cross-site scripting attacks on affected 
    systems and run script in the security context of the current
    authenticated user. 

    These attacks could allow the attacker to read content 
    that the attacker is not authorized to read, use the 
    victim's identity to take actions within Dynamics Server 
    on behalf of the user, such as change permissions and 
    delete content, and inject malicious content in the browser 
    of the user. 

    The security update addresses the vulnerability by helping
    to ensure that Dynamics Server properly sanitizes web
    requests. (CVE-2020-1049, CVE-2020-1050)");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/help/4538593");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released KB4538593 to address this issue.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/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:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-1050");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/04/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/04/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/15");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:dynamics_365");
  script_set_attribute(attribute:"stig_severity", value:"II");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows : Microsoft Bulletins");

  script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("microsoft_dynamics_365_detect.nbin");
  script_require_keys("installed_sw/Microsoft Dynamics 365 Server");
  script_require_ports(139, 445);

  exit(0);
}

include('vcf.inc');

app = 'Microsoft Dynamics 365 Server';
app_info = vcf::get_app_info(app:app, win_local:TRUE);

constraints = [
  { 'min_version' : '9.0', 'fixed_version' : '9.0.14.12' }
];

vcf::check_version_and_report(app_info:app_info, constraints:constraints, severity:SECURITY_WARNING, flags: { xss:TRUE } );