Security Updates for Microsoft Team Foundation Server and Azure DevOps Server (September 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(128649);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2021/06/03");

  script_cve_id("CVE-2019-1305", "CVE-2019-1306");
  script_xref(name:"IAVA", value:"2019-A-0334-S");

  script_name(english:"Security Updates for Microsoft Team Foundation Server and Azure DevOps Server (September 2019)");
  script_summary(english:"Checks for Microsoft security updates.");

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

  - A Cross-site Scripting (XSS) vulnerability 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.
    (CVE-2019-1305)

  - A remote code execution vulnerability exists when Azure DevOps Server (ADO) and Team Foundation Server (TFS) fail
    to validate input properly. An attacker who successfully exploited this vulnerability could execute code on the
    server in the context of the TFS or ADO service account. To exploit the vulnerability, an attacker would need to
    upload a specially-crafted file to a vulnerable ADO or TFS server repo and wait for the system to index the file.
    The security update addresses the vulnerability by correcting how ADO and TFS index files. (CVE-2019-1306)");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following updates to address these issues:
  - Team Foundation Server 2015 Update 4.2 with patch 3
  - Team Foundation Server 2017 Update 3.1 with patch 8
  - Team Foundation Server 2018 Update 1.2 with patch 6
  - Team Foundation Server 2018 Update 3.2 with patch 7
  - Azure DevOps Server 2019 Update 0.1 with patch 3
  - Azure DevOps Server 2019 Update 1 with patch 1

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:N/C:P/I:P/A:P");
  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:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-1306");

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

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

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:azure_devops_server");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:visual_studio_team_foundation_server");
  script_set_attribute(attribute:"stig_severity", value:"I");
  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('audit.inc');
include('smb_func.inc');
include('smb_hotfixes.inc');
include('smb_hotfixes_fcheck.inc');
include('smb_reg_query.inc');
include('misc_func.inc');
include('install_func.inc');
include('spad_log_func.inc');

get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');

bulletin = 'MS19-09';

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'];

  spad_log(message: 'path: ' + path + '\n update: ' + update + '\n release: ' + release);
  # Those without update mappings
  if (empty_or_null(update) || !release)
    audit(AUDIT_HOST_NOT, 'affected');

  if (release == '2015' && ver_compare(ver:update, fix:'4.2', minver:'0', strict:FALSE) <= 0)
  {
    path = hotfix_append_path(path:path, value:'Application Tier\\Web Services\\bin');
    if (hotfix_check_fversion(file:'Microsoft.TeamFoundation.Framework.Server.dll',
                              version:'14.114.29226.0',
                              min_version:'14.0.0.0',
                              path:path,
                              product:'Microsoft Team Foundation Server 2015 Update 4.2') == HCF_OLDER)
    {
      xss = TRUE;
      vuln = TRUE;
      hotfix_add_report('Team Foundation Server 2015 prior to Update 4.2 patch 3 is vulnerable. Ensure\n' +
                        'the installation is updated to Update 4.2 patch 3.', bulletin:bulletin);
    }
  }
  else if (release == '2017' && ver_compare(ver:update, fix:'3.1', minver:'0', strict:FALSE) <= 0)
  {
    path = hotfix_append_path(path:path, value:'Application Tier\\Web Services\\bin');
    if (hotfix_check_fversion(file:'Microsoft.TeamFoundation.Server.WebAccess.Admin.dll',
                              version:'15.117.29226.0',
                              min_version:'15.0.0.0',
                              path:path,
                              product:'Microsoft Team Foundation Server 2017 Update 3.1') == HCF_OLDER)
    {
      xss = TRUE;
      vuln = TRUE;
      hotfix_add_report('Team Foundation Server 2017 prior to Update 3.1 patch 8 is vulnerable. Ensure\n' +
                        'the installation is updated to Update 3.1 patch 8', bulletin:bulletin);
    }
  }
  # 2018 RTW -> 2018 Update 1.2 (122)
  else if (release == '2018' && ver_compare(ver:update, fix:'1.2', minver:'0', strict:FALSE) <= 0)
  {
    path = hotfix_append_path(path:path, value:'Application Tier\\Web Services\\bin');
    if (hotfix_check_fversion(file:'Microsoft.TeamFoundation.Server.WebAccess.Admin.dll',
                              version:'16.122.29226.6',
                              min_version:'16.0.0.0',
                              path:path,
                              product:'Microsoft Team Foundation Server 2018 Update 1.2') == HCF_OLDER)
    {
      xss = TRUE;
      vuln = TRUE;
      hotfix_add_report('Team Foundation Server 2018 prior to Update 1.2 patch 6 is vulnerable. Ensure\n' +
                        'the installation is updated to Update 1.2 patch 6', bulletin:bulletin);
     }
  }
  # 2018 Update 2 -> 2018 Update 3.2 (131)
  else if (release == '2018' && ver_compare(ver:update, fix:'3.2', minver:'2', strict:FALSE) <= 0)
  {
    path = hotfix_append_path(path:path, value:'Application Tier\\Web Services\\bin');
    if (hotfix_check_fversion(file:'Microsoft.TeamFoundation.WorkItemTracking.Web.dll',
                              version:'16.131.29226.5',
                              min_version:'16.131.0.0',
                              path:path,
                              product:'Microsoft Team Foundation Server 2018 Update 3.2') == HCF_OLDER)
    {
      xss = TRUE;
      vuln = TRUE;
      hotfix_add_report('Team Foundation Server 2018 prior to Update 3.2 patch 7 is vulnerable. Ensure\n' +
                        'the installation is updated to Update 3.2 patch 7', bulletin:bulletin);
     }
  }
  else if (release == '2019' && ver_compare(ver:update, fix:'0.1', minver:'0', strict:FALSE) <= 0)
  {
    path = hotfix_append_path(path:path, value:'Application Tier\\Web Services\\bin');
    if (hotfix_check_fversion(file:'Microsoft.TeamFoundation.Framework.Server.dll',
                              version:'17.143.29226.4',
                              min_version:'17.0.0.0',
                              path:path,
                              product:'Microsoft Azure DevOps Server 2019.0.1') == HCF_OLDER)
    {
      xss = TRUE;
      vuln = TRUE;
      hotfix_add_report('Azure DevOps Server 2019 prior to 2019.0.1 patch 3 is vulnerable. Ensure\n' +
                        'the installation is updated to 2019.0.1 patch 3.', bulletin:bulletin);
    }
  }
  else if (release == '2019' && ver_compare(ver:update, fix:'1', minver:'1', strict:FALSE) <= 0)
  {
    path = hotfix_append_path(path:path, value:'Application Tier\\Web Services\\bin');
    if (hotfix_check_fversion(file:'Microsoft.VisualStudio.Services.Search.Common.dll',
                              version:'17.153.29226.8',
                              min_version:'17.153.0.0',
                              path:path,
                              product:'Microsoft Azure DevOps Server 2019 Update 1') == HCF_OLDER)
    {
      xss = FALSE;
      vuln = TRUE;
      hotfix_add_report('Azure DevOps Server 2019 prior to 2019 Update 1 patch 1 is vulnerable. Ensure\n' +
                        'the installation is updated to 2019 Update 1 patch 1.', 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');
}