| code | #
# (C) Tenable Network Security, Inc.
#
include('compat.inc');
if (description)
{
script_id(135718);
script_version("1.2");
script_set_attribute(attribute:"plugin_modification_date", value:"2020/04/23");
script_cve_id("CVE-2020-1002");
script_name(english:"Security Updates for Microsoft Defender (April 2020)");
script_summary(english:"Checks the MpSigStub.exe version.");
script_set_attribute(attribute:"synopsis", value:
"An antimalware application installed on the remote host is affected by
an elevation of privilege vulnerability.");
script_set_attribute(attribute:"description", value:
"The version of Microsoft Malware Protection Signature Update Stub (MpSigStub.exe) installed on the remote Windows host
is prior to 1.1.16638.0. It is, therefore, affected by a elevation of privilege vulnerability which could allow an
attacker who successfully exploited this vulnerability to elevate privileges on the system.");
# https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1002
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d6966f51");
script_set_attribute(attribute:"solution", value:
"Enable automatic updates to update the scan engine for the relevant antimalware applications. Refer to Knowledge Base
Article 2510781 for information on how to verify that MMPE has been updated.");
script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:N/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:L/AC:L/PR:L/UI:N/S:U/C:N/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-2020-1002");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/04/14");
script_set_attribute(attribute:"patch_publication_date", value:"2020/04/14");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/04/17");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:windows_defender");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Windows");
script_copyright(english:"This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("smb_hotfixes.nasl");
script_require_keys("SMB/Registry/Enumerated");
script_require_ports(139, 445);
exit(0);
}
include("audit.inc");
include("smb_func.inc");
include("smb_hotfixes_fcheck.inc");
include("smb_hotfixes.inc");
include("misc_func.inc");
app = 'Microsoft Malware Protection Signature Update Stub';
winroot = NULL;
mpsigstub_path = NULL;
version = NULL;
fix = "1.1.16638.0";
get_kb_item_or_exit("SMB/Registry/Enumerated");
winroot = hotfix_get_systemroot();
if (!winroot) exit(1, "Failed to get the system root.");
mpsigstub_path = winroot + "\System32\MpSigStub.exe";
ver = hotfix_get_fversion(path:mpsigstub_path);
if (ver['error'] != HCF_OK) audit(AUDIT_NOT_DETECT, app);
version = join(ver['value'], sep:'.');
if (ver_compare(ver:version, fix:fix) < 0)
{
report = '\n Product : ' + app;
report += '\n Path : ' + mpsigstub_path;
report += '\n Installed version : ' + version;
report += '\n Fixed version : ' + fix;
report += '\n';
security_report_v4(port:0, extra:report, severity:SECURITY_WARNING);
}
else audit(AUDIT_INST_VER_NOT_VULN, app, version);
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