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nessusThis script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.SMB_NT_MS21_OCT_OFFICE_SHAREPOINT_2013.NASL
HistoryOct 12, 2021 - 12:00 a.m.

Security Updates for Microsoft SharePoint Server 2013 (October 2021)

2021-10-1200:00:00
This script is Copyright (C) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
73

7.5 High

AI Score

Confidence

Low

The Microsoft SharePoint Server 2013 installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities :

  • A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-40485, CVE-2021-40486)
  • A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2021-40486, CVE-2021-40487, CVE-2021-41344) Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 70300
##
# (C) Tenable Network Security, Inc.
##

include('deprecated_nasl_level.inc');
include('compat.inc');

if (description)
{
  script_id(154028);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2023/11/28");

  script_cve_id(
    "CVE-2021-40484",
    "CVE-2021-40485",
    "CVE-2021-40486",
    "CVE-2021-40487",
    "CVE-2021-41344"
  );
  script_xref(name:"MSKB", value:"4493202");
  script_xref(name:"MSKB", value:"5001924");
  script_xref(name:"MSKB", value:"5002042");
  script_xref(name:"MSFT", value:"MS21-4493202");
  script_xref(name:"MSFT", value:"MS21-5001924");
  script_xref(name:"MSFT", value:"MS21-5002042");
  script_xref(name:"IAVA", value:"2021-A-0469-S");

  script_name(english:"Security Updates for Microsoft SharePoint Server 2013 (October 2021)");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft SharePoint Server 2013 installation on the remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Microsoft SharePoint Server 2013 installation on the remote host is missing security updates. It is, therefore,
affected by multiple vulnerabilities :

  - A remote code execution vulnerability. An attacker can exploit this to bypass 
    authentication and execute unauthorized arbitrary commands. (CVE-2021-40485,
    CVE-2021-40486)
    
  - A remote code execution vulnerability. An attacker can
    exploit this to bypass authentication and execute
    unauthorized arbitrary commands. (CVE-2021-40486,
    CVE-2021-40487, CVE-2021-41344)
    
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version 
number.");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/help/4493202");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/help/5001924");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/en-us/help/5002042");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue: 
  -KB4493202
  -KB5002042");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:F/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:H/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2021-40486");
  script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2021-41344");

  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:"2021/10/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2021/10/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2021/10/12");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:sharepoint_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) 2021-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("microsoft_sharepoint_installed.nbin", "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');

var bulletin = 'MS21-10';
var app_name = 'Microsoft SharePoint Server';
var kbs = make_list(
  '4493202',
  '5002042',
  '5001924'
);

if (get_kb_item('Host/patch_management_checks'))
  hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_WARNING);

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

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

registry_init();

var install = get_single_install(app_name:app_name);

var kb_checks =
{
  '2013':
  { '1':
    {'Foundation':
      [
        {
           'kb'           : '5002042',
           'path'         : hotfix_get_commonfilesdir(),
           'append'       : 'microsoft shared\\web server extensions\\15\\bin',
           'file'         : 'onetutil.dll',
           'version'      : '15.0.5389.1000',
           'product_name' : 'Microsoft SharePoint Foundation Server 2013 SP1'
        }
      ],
      'Server':
      [
        {
          'kb'           : '4493202',
          'path'         : install['path'],
          'append'       : 'bin',
          'file'         : 'xlsrv.dll',
          'version'      : '15.0.5389.1000',
          'product_name' : 'Microsoft SharePoint Enterprise Server 2013 SP1'
        },
        {
          'kb'           : '5001924',
          'path'         : install['path'],
          'version'      : '15.0.5389.1000',
          'append'       : 'webservices\\conversionservices',
          'file'         : 'msoserver.dll',
          'product_name' : 'Microsoft SharePoint Enterprise Server 2013 SP1'
        }
      ]
    }
  }
};

# Get the specific product / path
var param_list = kb_checks[install['Product']][install['SP']][install['Edition']];
# audit if not affected
if(isnull(param_list)) audit(AUDIT_HOST_NOT, 'affected');
var port = kb_smb_transport();
# grab the path otherwise
var check;
foreach check (param_list)
{
  if (!isnull(check['version']))
  {
    var path = check['path'];
    if (!empty_or_null(check['append']))
      path = hotfix_append_path(path:check['path'], value:check['append']);
    are_we_vuln = hotfix_check_fversion(
      file:check['file'],
      version:check['version'],
      path:path,
      kb:check['kb'],
      product:check['product_name']
    );
  }
  else
  {
    var report = '\n';
    if (check['product_name'])
      report += '  Product : ' + check['product_name'] + '\n';
    if (check['kb'])
      report += '  KB : ' + check['kb'] + '\n';
    hotfix_add_report(report, kb:check['kb']);
  }

  if(are_we_vuln == HCF_OLDER) vuln = TRUE;

}
if (vuln)
{
  port = kb_smb_transport();
  replace_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_warning();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_INST_VER_NOT_VULN, app_name);
}

VendorProductVersion
microsoftsharepoint_server

7.5 High

AI Score

Confidence

Low

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