Security Updates for Microsoft Team Foundation Server (March 2019)

#
# (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(122791);
  script_version("1.5");
  script_set_attribute(attribute:"plugin_modification_date", value:"2020/04/21");

  script_cve_id("CVE-2019-0777");
  script_bugtraq_id(107234);

  script_name(english:"Security Updates for Microsoft Team Foundation Server (March 2019)");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Team Foundation Server installation on the remote host
is affected by a cross-site scripting vulnerability.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Team Foundation Server installation on the remote host
is missing a security update. It is, therefore, affected by a cross-
site scripting (XSS) vulnerability that exists when Team Foundation
Server does not properly sanitize user provided input. An
authenticated attacker could exploit the vulnerability by sending a
specially crafted payload to the Team Foundation Server, which will
get executed in the context of the user every time a user visits the
compromised page. 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
user. The attacks could allow the attacker to read content that the
attacker is not authorized to read, execute malicious code, and use
the victim's identity to take actions on the site on behalf of the
user, such as change permissions and delete content. The security
update addresses the vulnerability by ensuring that Team Foundation
Server sanitizes user inputs.
");
  # https://devblogs.microsoft.com/devops/march-security-release-patches-available-for-tfs-2018-3-2-tfs-2018-1-2-and-tfs-2017-3-1/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7f026859");
  # https://docs.microsoft.com/en-us/visualstudio/releasenotes/tfs2017-update3
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f912b5e2");
  # https://docs.microsoft.com/en-us/visualstudio/releasenotes/tfs2018-update1
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?8b2dad36");
  # https://docs.microsoft.com/en-us/visualstudio/releasenotes/tfs2018-update3
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7fb75469");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following updates to address these issues:
  - Team Foundation Server 2017 Update 3.1 w/ patch
  - Team Foundation Server 2018 Update 1.2 w/ patch
  - Team Foundation Server 2018 Update 3.2 w/ patch

Please refer to the vendor guidance to determine the version and patch
to apply.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:S/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:L/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-2019-0777");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/03/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/03/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/03/12");

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

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

  script_copyright(english:"This script is Copyright (C) 2019-2020 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies(
    "microsoft_team_foundation_server_installed.nasl",
    "smb_hotfixes.nasl",
    "ms_bulletin_checks_possible.nasl"
  );
  script_require_keys("SMB/MS_Bulletin_Checks/Possible");
  script_require_ports(139, 445, "Host/patch_management_checks");

  exit(0);
}

include('smb_func.inc');
include('smb_hotfixes.inc');
include('smb_hotfixes_fcheck.inc');
include('smb_reg_query.inc');
include('install_func.inc');

get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');

bulletin = 'MS19-03';

get_kb_item_or_exit('SMB/Registry/Enumerated', exit_code:1);

# Get path information for Windows.
windir = hotfix_get_systemroot();
if (isnull(windir)) exit(1, 'Failed to determine the location of %windir%.');

registry_init();

port = kb_smb_transport();

installs = get_installs(app_name:'Microsoft Team Foundation Server', exit_if_not_found:TRUE);

foreach install (installs[1])
{
  vuln = FALSE;
  xss = FALSE;
  path = install['path'];
  update = install['Update'];
  release = install['Release'];

  # Those without update mappings
  if (empty_or_null(update) || !release)
    audit(AUDIT_HOST_NOT, 'affected');

  if (release == '2017')
  {
    # All 2017 should upgrade to 2017 Update 3.1 w/patch
    path = hotfix_append_path(path:path, value:'Application Tier\\Web Services\\bin');
    if (hotfix_check_fversion(file:'Microsoft.TeamFoundation.Server.WebAccess.Admin.dll', version:'15.117.28627.0', min_version:'15.0.0.0', path:path, product:'Microsoft Team Foundation Server 2017 Update 3.1') == HCF_OLDER ||
       ver_compare(ver:update, fix:'3.1', minver:'0', strict:FALSE) < 0)
    {
      xss = TRUE;
      vuln = TRUE;
      hotfix_add_report('Team Foundation Server 2017 prior to Update 3.1 with patch is vulnerable. Ensure the system is on Update 3.1 and apply the vendor patch.', bulletin:bulletin);
    }
  }
  # 2018 RTW -> 2018 Update 1.2
  else if (release == '2018' && ver_compare(ver:update, fix:'1.2', minver:'0', strict:FALSE) <= 0
        && !isnull(ver_compare(ver:update, fix:'1.2', minver:'0', strict:FALSE)))
  {
    path = hotfix_append_path(path:path, value:'Application Tier\\Web Services\\bin');
    if (hotfix_check_fversion(file:'Microsoft.TeamFoundation.Server.WebAccess.Admin.dll', version:'16.122.28627.2', min_version:'16.0.0.0', path:path, product:'Microsoft Team Foundation Server 2018 Update 1.2') == HCF_OLDER ||
        ver_compare(ver:update, fix:'1.2', minver:'0', strict:FALSE) < 0)
    {
      xss = TRUE;
      vuln = TRUE;
      hotfix_add_report('Team Foundation Server 2018 prior to Update 1.2 with patch is vulnerable. Ensure the system is on Update 1.2 and apply the vendor patch.', bulletin:bulletin);
    }
  }
  # 2018 Update 3.2
  else if (release == '2018' && ver_compare(ver:update, fix:'3.2', minver:'2', strict:FALSE) <= 0
        && !isnull(ver_compare(ver:update, fix:'3.2', minver:'2', strict:FALSE)))
  {
    path = hotfix_append_path(path:path, value:'Application Tier\\Web Services\\bin');
    if (hotfix_check_fversion(file:'Microsoft.TeamFoundation.WorkItemTracking.Web.dll', version:'16.131.28626.3', min_version:'16.131.0.0', path:path, product:'Microsoft Team Foundation Server 2018 Update 3') == HCF_OLDER ||
        ver_compare(ver:update, fix:'3.2', minver:'2', strict:FALSE) < 0)
    {
      xss = TRUE;
      vuln = TRUE;
      hotfix_add_report('Team Foundation Server 2018 prior to Update 3.2 with patch is vulnerable. Ensure you are on Update 3.2 and apply the vendor patch.', bulletin:bulletin);
    }
  }
}

if (vuln)
{
  if (xss) replace_kb_item(name:'www/'+port+'/XSS', value:TRUE);
  replace_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_note();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, 'affected');
}