Security Updates for Microsoft Team Foundation Server / Azure DevOps Server (May 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(125163);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/03/11");

  script_cve_id(
    "CVE-2019-0872",
    "CVE-2019-0971",
    "CVE-2019-0979"
  );
  script_bugtraq_id(
    108205,
    108206,
    108239
  );
  script_xref(name:"MSKB", value:"4464510");
  script_xref(name:"MSKB", value:"4464511");
  script_xref(name:"MSKB", value:"4464515");
  script_xref(name:"MSKB", value:"4464518");
  script_xref(name:"MSKB", value:"4464525");
  script_xref(name:"MSKB", value:"4464528");
  script_xref(name:"MSFT", value:"MS19-4464510");
  script_xref(name:"MSFT", value:"MS19-4464511");
  script_xref(name:"MSFT", value:"MS19-4464515");
  script_xref(name:"MSFT", value:"MS19-4464518");
  script_xref(name:"MSFT", value:"MS19-4464525");
  script_xref(name:"MSFT", value:"MS19-4464528");

  script_name(english:"Security Updates for Microsoft Team Foundation Server / Azure DevOps Server (May 2019)");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Team Foundation Server or Azure DevOps Server is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Team Foundation Server or Azure DevOps Server is 
missing security updates. It is, therefore, affected by multiple
vulnerabilities :

  - An information disclosure vulnerability exists when
    Azure DevOps Server and Microsoft Team Foundation Server
    do not properly sanitize a specially crafted
    authentication request to an affected server. An
    attacker who successfully exploited this vulnerability
    could execute malicious code on a vulnerable server.
    (CVE-2019-0971)

  - A Cross-site Scripting (XSS) vulnerability exists when
    Azure DevOps Server and Team Foundation Server does not
    properly sanitize user provided input. An authenticated
    attacker could exploit the vulnerability by sending a
    specially crafted payload to an Azure DevOps server or a
    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
    Azure DevOps Server and Team Foundation Server properly 
    sanitizes user input. (CVE-2019-0872, CVE-2019-0979)");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following updates to address these issues:
  - Team Foundation Server 2015 Update 4.2 w/ patch 1
  - Team Foundation Server 2017 Update 3.1 w/ patch 5
  - Team Foundation Server 2018 Update 1.2 w/ patch 4
  - Team Foundation Server 2018 Update 3.2 w/ patch 4
  - Azure DevOps Server 2019 RTW w/ patch 2

Please refer to the vendor guidance to determine the version and patch
to apply.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  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:N/S:U/C:H/I:N/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-2019-0971");
  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");

  # https://devblogs.microsoft.com/devops/may-security-release-patches-available-for-azure-devops-server-2019-tfs-2018-3-2-tfs-2018-1-2-tfs-2017-3-1-and-tfs-2015-4-2/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b7e2c8f5");
   # https://docs.microsoft.com/en-us/visualstudio/releasenotes/tfs2015-update4-vs
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c6513ee5");
  # 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");
  # https://docs.microsoft.com/en-us/azure/devops/server/release-notes/azuredevops2019
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?35dc6160");

  script_set_attribute(attribute:"vuln_publication_date", value:"2019/05/14");
  script_set_attribute(attribute:"patch_publication_date", value:"2019/05/14");
  script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/15");

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

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

  script_copyright(english:"This script is Copyright (C) 2019-2021 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 = 'MS19-05';

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 == '2015')
  {
    # All 2015 should upgrade to 2015 Update 4.2 patch 1
    if (hotfix_check_fversion(file:'Microsoft.TeamFoundation.Framework.Server.dll',
                              version:'14.114.28829.0',
                              min_version:'14.0.0.0',
                              path:path,
                              product:'Microsoft Team Foundation Server 2015 Update 4.2') == HCF_OLDER
    || 
    ver_compare(ver:update, fix:'4.2', minver:'0', strict:FALSE) < 0)
    {
      xss = TRUE;
      vuln = TRUE;
      hotfix_add_report('Team Foundation Server 2015 prior to Update 4.2 patch 1 is vulnerable. Ensure\n' +
                        'the installation is updated to Update 4.2 patch 1', bulletin:bulletin);
    }
  }
  else 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:'15.117.28826.0',
                              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 patch 5 is\n' +
                        'vulnerable. Ensure the installation is on Update 3.1 and apply the\n' +
                        '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:'16.122.28826.4',
                              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 4 is\n' + 
                        'vulnerable. Ensure the installation is on Update 1.2 and apply the\n' + 
                        '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:'16.131.28826.3',
                              min_version:'16.131.0.0',
                              path:path,
                              product:'Microsoft Team Foundation Server 2018 Update 3.2') == 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 4 is\n' + 
                        'vulnerable. Ensure you are on Update 3.2 and apply the vendor patch.', bulletin:bulletin);
    }
  }
  else if (release == '2019' && update == '0')
  {
    path = hotfix_append_path(path:path, value:'Application Tier\\Web Services\\bin');
    if (hotfix_check_fversion(file:'Microsoft.TeamFoundation.Server.WebAccess.VersionControl.dll',
                              version:'17.143.28826.2',
                              min_version:'17.0.0.0',
                              path:path,
                              product:'Microsoft Azure DevOps Server 2019 RTW') == HCF_OLDER)
    {
      xss = TRUE;
      vuln = TRUE;
      hotfix_add_report('Azure DevOps Server 2019 RTW is vulnerable. Ensure you apply the\n' + 
                        '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_hole();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, 'affected');
}