9.3 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.2 High
AI Score
Confidence
High
0.047 Low
EPSS
Percentile
92.7%
This host is missing a critical security
update according to Microsoft KB4484277.
# SPDX-FileCopyrightText: 2020 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only
if(description)
{
script_oid("1.3.6.1.4.1.25623.1.0.816598");
script_version("2023-10-20T16:09:12+0000");
script_cve_id("CVE-2020-0850", "CVE-2020-0892", "CVE-2020-0852");
script_tag(name:"cvss_base", value:"9.3");
script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:C/I:C/A:C");
script_tag(name:"last_modification", value:"2023-10-20 16:09:12 +0000 (Fri, 20 Oct 2023)");
script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
script_tag(name:"severity_origin", value:"NVD");
script_tag(name:"severity_date", value:"2020-05-04 14:14:00 +0000 (Mon, 04 May 2020)");
script_tag(name:"creation_date", value:"2020-03-11 10:10:57 +0000 (Wed, 11 Mar 2020)");
script_name("Microsoft SharePoint Enterprise Server 2016 Multiple RCE Vulnerabilities (KB4484277)");
script_tag(name:"summary", value:"This host is missing a critical security
update according to Microsoft KB4484277.");
script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present on
the target host.");
script_tag(name:"insight", value:"Multiple flaws exist when Microsoft Word
software fails to properly handle objects in memory.");
script_tag(name:"impact", value:"Successful exploitation allows attackers to
use a specially crafted file to perform actions in the security context of the
current user.");
script_tag(name:"affected", value:"Microsoft SharePoint Server 2019.");
script_tag(name:"solution", value:"The vendor has released updates. Please see the references for more information.");
script_tag(name:"solution_type", value:"VendorFix");
script_tag(name:"qod_type", value:"executable_version");
script_xref(name:"URL", value:"https://support.microsoft.com/en-us/help/4484277");
script_category(ACT_GATHER_INFO);
script_copyright("Copyright (C) 2020 Greenbone AG");
script_family("Windows : Microsoft Bulletins");
script_dependencies("gb_ms_sharepoint_sever_n_foundation_detect.nasl");
script_mandatory_keys("MS/SharePoint/Server/Ver");
script_require_ports(139, 445);
exit(0);
}
include("smb_nt.inc");
include("host_details.inc");
include("version_func.inc");
include("secpod_smb_func.inc");
CPE = "cpe:/a:microsoft:sharepoint_server";
if(!infos = get_app_version_and_location(cpe:CPE, exit_no_version:TRUE))
exit(0);
shareVer = infos["version"];
if(shareVer !~ "^16\.")
exit(0);
path = infos["location"];
if(!path || "Could not find the install location" >< path)
{
if(!os_arch = get_kb_item("SMB/Windows/Arch"))
exit(0);
if("x86" >< os_arch){
key_list = make_list("SOFTWARE\Microsoft\Windows\CurrentVersion");
}
else if("x64" >< os_arch){
key_list = make_list("SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion",
"SOFTWARE\Microsoft\Windows\CurrentVersion");
}
foreach key(key_list)
{
path = registry_get_sz(key:key, item:"ProgramFilesDir");
if(path)
{
path = path + "\Microsoft Office Servers\16.0\WebServices\ConversionServices\1033";
dllVer = fetch_file_version(sysPath:path, file_name:"msoserverintl.dll");
if(dllVer) {
break;
}
}
}
} else {
path = path + "\16.0\WebServices\ConversionServices\1033";
dllVer = fetch_file_version(sysPath:path, file_name:"msoserverintl.dll");
}
if(dllVer =~ "^16\.0\." && version_in_range(version:dllVer, test_version:"16.0.10337.12109", test_version2:"16.0.10357.20003"))
{
report = report_fixed_ver(file_checked:path + "\msoserverintl.dll",
file_version:dllVer, vulnerable_range:"16.0.10337.12109 - 16.0.10357.20003");
security_message(port:0, data:report);
exit(0);
}
exit(99);
9.3 High
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:C/I:C/A:C
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
8.2 High
AI Score
Confidence
High
0.047 Low
EPSS
Percentile
92.7%