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nessusThis script is Copyright (C) 2022 and is owned by Tenable, Inc. or an Affiliate thereof.MSDT_RCE_CVE_2022-30190_REG_CHECK.NASL
HistoryMay 31, 2022 - 12:00 a.m.

The Microsoft Windows Support Diagnostic Tool (MSDT) RCE Workaround Detection (CVE-2022-30190)

2022-05-3100:00:00
This script is Copyright (C) 2022 and is owned by Tenable, Inc. or an Affiliate thereof.
www.tenable.com
1173

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

9.3 High

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.966 High

EPSS

Percentile

99.6%

The remote host has the HKEY_CLASSES_ROOT\ms-msdt registry key. This is a known exposure for CVE-2022-30190.

Note that Nessus has not tested for CVE-2022-30190. It is only checking if the registry key exists. The recommendation is to apply the latest patch.

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

include('compat.inc');

if (description)
{
  script_id(161691);
  script_version("1.9");
  script_set_attribute(attribute:"plugin_modification_date", value:"2022/07/28");

  script_name(english:"The Microsoft Windows Support Diagnostic Tool (MSDT) RCE Workaround Detection (CVE-2022-30190)");

  script_set_attribute(attribute:"synopsis", value:
"Checks for the HKEY_CLASSES_ROOT\ms-msdt registry key.");
  script_set_attribute(attribute:"description", value:
"The remote host has the HKEY_CLASSES_ROOT\ms-msdt registry key. This is a known exposure for CVE-2022-30190.

Note that Nessus has not tested for CVE-2022-30190. It is only checking if the registry key exists. The recommendation is
to apply the latest patch.");
  # https://community.tenable.com/s/article/Microsoft-CVE-2022-30190-Patch-and-Workaround-Plugin-Advisement
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?440e4ba1");
  # https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-30190
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-30190");
  # https://msrc-blog.microsoft.com/2022/05/30/guidance-for-cve-2022-30190-microsoft-support-diagnostic-tool-vulnerability/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b9345997");
  script_set_attribute(attribute:"solution", value:
"Apply the latest Cumulative Update.");

  script_set_attribute(attribute:"risk_factor", value:"None");

  script_set_attribute(attribute:"vuln_publication_date", value:"2022/05/30");
  script_set_attribute(attribute:"patch_publication_date", value:"2022/05/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2022/05/31");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/a:microsoft:msdt");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2022 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("microsoft_windows_defender_win_installed.nbin");
  script_require_keys("SMB/Registry/Enumerated");

  exit(0);
}

include('vcf.inc');
include('vcf_extras.inc');
include('smb_reg_query.inc');
include('spad_log_func.inc');
include('smb_func.inc');

registry_init();
var hkcr = registry_hive_connect(hive:HKEY_CLASS_ROOT, exit_on_fail:TRUE);

if (!registry_key_exists(handle:hkcr, key:'ms-msdt'))
{
  spad_log(message:'HKEY_CLASSES_ROOT\\ms-msdt does not exist, auditing');
  close_registry();
  audit(AUDIT_OS_CONF_NOT_VULN, 'Windows');
}

var report = 'The HKEY_CLASSES_ROOT\\ms-msdt registry key exists on the target. This may indicate that the target is' +
  ' vulnerable to CVE-2022-30190, if the vendor patch is not applied.';

var port = kb_smb_transport();
close_registry();
security_report_v4(severity:SECURITY_NOTE, extra:report, port:port);
exit(0);
VendorProductVersionCPE
microsoftwindowscpe:/o:microsoft:windows
microsoftmsdtx-cpe:/a:microsoft:msdt

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

9.3 High

CVSS2

Access Vector

Access Complexity

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.966 High

EPSS

Percentile

99.6%