CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:S/C:P/I:P/A:N
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
EPSS
Percentile
95.7%
The Microsoft SharePoint Server installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities :
A spoofing vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server. An authenticated attacker could exploit the vulnerability by sending a specially crafted request to an affected SharePoint server. 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.
These attacks could allow the attacker to read content that the attacker is not authorized to read, use the victim’s identity to take actions on the SharePoint site on behalf of the user, such as change permissions and delete content, and inject malicious content in the browser of the user. The security update addresses the vulnerability by helping to ensure that SharePoint Server properly sanitizes web requests. (CVE-2020-1499, CVE-2020-1500, CVE-2020-1501)
An information disclosure vulnerability exists when Microsoft SharePoint Server fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. (CVE-2020-1505)
An information disclosure vulnerability exists when Microsoft Word improperly discloses the contents of its memory. An attacker who exploited the vulnerability could use the information to compromise the users computer or data. (CVE-2020-1502, CVE-2020-1503, CVE-2020-1583)
A cross-site-scripting (XSS) vulnerability exists when Microsoft SharePoint Server does not properly sanitize a specially crafted web request to an affected SharePoint server. An authenticated attacker could exploit the vulnerability by sending a specially crafted request to an affected SharePoint server. 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, use the victim’s identity to take actions on the SharePoint site on behalf of the user, such as change permissions and delete content, and inject malicious content in the browser of the user. The security update addresses the vulnerability by helping to ensure that SharePoint Server properly sanitizes web requests. (CVE-2020-1573, CVE-2020-1580)
#
# (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(139502);
script_version("1.9");
script_set_attribute(attribute:"plugin_modification_date", value:"2022/12/05");
script_cve_id(
"CVE-2020-1499",
"CVE-2020-1500",
"CVE-2020-1501",
"CVE-2020-1503",
"CVE-2020-1505",
"CVE-2020-1573",
"CVE-2020-1580",
"CVE-2020-1583"
);
script_xref(name:"MSKB", value:"4484473");
script_xref(name:"MSKB", value:"4484476");
script_xref(name:"IAVA", value:"2020-A-0362-S");
script_xref(name:"CEA-ID", value:"CEA-2020-0101");
script_name(english:"Security Updates for Microsoft SharePoint 2016 (August 2020)");
script_set_attribute(attribute:"synopsis", value:
"The Microsoft SharePoint Server installation on the remote host is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The Microsoft SharePoint Server installation on the remote
host is missing security updates. It is, therefore, affected
by multiple vulnerabilities :
- A spoofing vulnerability exists when Microsoft
SharePoint Server does not properly sanitize a specially
crafted web request to an affected SharePoint server. An
authenticated attacker could exploit the vulnerability
by sending a specially crafted request to an affected
SharePoint server. 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.
These attacks could allow the attacker to read content
that the attacker is not authorized to read, use the
victim's identity to take actions on the SharePoint site
on behalf of the user, such as change permissions and
delete content, and inject malicious content in the
browser of the user. The security update addresses the
vulnerability by helping to ensure that SharePoint
Server properly sanitizes web requests. (CVE-2020-1499,
CVE-2020-1500, CVE-2020-1501)
- An information disclosure vulnerability exists when
Microsoft SharePoint Server fails to properly handle
objects in memory. An attacker who successfully
exploited this vulnerability could obtain information to
further compromise the users system. (CVE-2020-1505)
- An information disclosure vulnerability exists when
Microsoft Word improperly discloses the contents of its
memory. An attacker who exploited the vulnerability
could use the information to compromise the users
computer or data. (CVE-2020-1502, CVE-2020-1503,
CVE-2020-1583)
- A cross-site-scripting (XSS) vulnerability exists when
Microsoft SharePoint Server does not properly sanitize a
specially crafted web request to an affected SharePoint
server. An authenticated attacker could exploit the
vulnerability by sending a specially crafted request to
an affected SharePoint server. 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, use
the victim's identity to take actions on the SharePoint
site on behalf of the user, such as change permissions
and delete content, and inject malicious content in the
browser of the user. The security update addresses the
vulnerability by helping to ensure that SharePoint
Server properly sanitizes web requests. (CVE-2020-1573,
CVE-2020-1580)");
# https://support.microsoft.com/en-us/help/4484473/security-update-for-sharepoint-server-2016-august-11-2020
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?ebf92078");
# https://support.microsoft.com/en-us/help/4484476/security-update-for-sharepoint-enterprise-server-2016-august-11-2020
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?4d416b2b");
script_set_attribute(attribute:"solution", value:
"Microsoft has released security updates for Microsoft SharePoint Server.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N");
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:L/UI:N/S:U/C:L/I:L/A:N");
script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-1501");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"vuln_publication_date", value:"2020/08/11");
script_set_attribute(attribute:"patch_publication_date", value:"2020/08/11");
script_set_attribute(attribute:"plugin_publication_date", value:"2020/08/11");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:sharepoint_foundation");
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) 2020-2022 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('misc_func.inc');
include('install_func.inc');
include('lists.inc');
get_kb_item_or_exit('SMB/MS_Bulletin_Checks/Possible');
bulletin = 'MS20-07';
kbs = make_list(
'4484473',
'4484476'
);
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.
windir = hotfix_get_systemroot();
if (isnull(windir)) exit(1, 'Failed to determine the location of %windir%.');
install = get_single_install(app_name:'Microsoft SharePoint Server');
kb_checks =
{
'2016':
{ '0':
{'Server':
[{
'kb' : '4484473',
'path' : hotfix_get_commonfilesdir(),
'append' : 'microsoft shared\\web server extensions\\16\\bin',
'file' : 'onetutil.dll',
'version' : '16.0.5044.1000',
'product_name' : 'Microsoft SharePoint Enterprise Server 2016'
},
{
'kb' : '4484476',
'path' : hotfix_get_commonfilesdir(),
'append' : 'microsoft shared\\server16\\server setup controller',
'file' : 'wsssetup.dll',
'version' : '16.0.5023.1000',
'product_name' : 'Microsoft SharePoint Enterprise Server 2016'
}]
}
}
};
# Get the specific product / path
param_list = kb_checks[install['Product']][install['SP']][install['Edition']];
# audit if not affected
if(isnull(param_list)) audit(AUDIT_INST_VER_NOT_VULN, 'Microsoft SharePoint Server');
vuln = FALSE;
xss = FALSE;
port = kb_smb_transport();
# grab the path otherwise
foreach check (param_list)
{
if (!isnull(check['version']))
{
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
{
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 (check['kb'] == '4484473'
) xss = TRUE;
}
}
if (vuln)
{
port = kb_smb_transport();
replace_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
if (xss) replace_kb_item(name:'www/' + port + '/XSS', value:TRUE);
hotfix_security_warning();
hotfix_check_fversion_end();
exit(0);
}
else
{
hotfix_check_fversion_end();
audit(AUDIT_HOST_NOT, 'affected');
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1499
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1500
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1501
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1503
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1505
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1573
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1580
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1583
www.nessus.org/u?4d416b2b
www.nessus.org/u?ebf92078
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:S/C:P/I:P/A:N
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
EPSS
Percentile
95.7%