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
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
94.7%
The Microsoft SharePoint Server installation on the remote host is missing security updates. It is, therefore, affected by multiple vulnerabilities :
A remote code execution vulnerability exists in Microsoft Word software when it fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could use a specially crafted file to perform actions in the security context of the current user. For example, the file could then take actions on behalf of the logged-on user with the same permissions as the current user. (CVE-2020-0980)
A remote code execution vulnerability exists in Microsoft SharePoint when the software fails to check the source markup of an application package. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the SharePoint application pool and the SharePoint server farm account.
Exploitation of this vulnerability requires that a user uploads a specially crafted SharePoint application package to an affected version of SharePoint. The security update addresses the vulnerability by correcting how SharePoint checks the source markup of application packages. (CVE-2020-0920, CVE-2020-0929, CVE-2020-0931, CVE-2020-0932, CVE-2020-0971, CVE-2020-0974)
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-2020-0923, CVE-2020-0924, CVE-2020-0925, CVE-2020-0926, CVE-2020-0927, CVE-2020-0930, CVE-2020-0933, CVE-2020-0954, CVE-2020-0973, CVE-2020-0978)
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-2020-0972, CVE-2020-0975, CVE-2020-0976, CVE-2020-0977)
#
# (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(135675);
script_version("1.11");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/06");
script_cve_id(
"CVE-2020-0920",
"CVE-2020-0923",
"CVE-2020-0924",
"CVE-2020-0925",
"CVE-2020-0926",
"CVE-2020-0927",
"CVE-2020-0929",
"CVE-2020-0930",
"CVE-2020-0931",
"CVE-2020-0932",
"CVE-2020-0933",
"CVE-2020-0954",
"CVE-2020-0971",
"CVE-2020-0972",
"CVE-2020-0973",
"CVE-2020-0974",
"CVE-2020-0975",
"CVE-2020-0976",
"CVE-2020-0977",
"CVE-2020-0978",
"CVE-2020-0980"
);
script_xref(name:"MSKB", value:"4011581");
script_xref(name:"MSKB", value:"4011584");
script_xref(name:"MSKB", value:"4484291");
script_xref(name:"MSKB", value:"4484292");
script_xref(name:"MSKB", value:"4484293");
script_xref(name:"MSKB", value:"4484297");
script_xref(name:"MSKB", value:"4484298");
script_xref(name:"MSKB", value:"4484299");
script_xref(name:"MSKB", value:"4484301");
script_xref(name:"MSKB", value:"4484307");
script_xref(name:"MSKB", value:"4484308");
script_xref(name:"MSKB", value:"4484321");
script_xref(name:"MSKB", value:"4484322");
script_xref(name:"MSFT", value:"MS20-4011581");
script_xref(name:"MSFT", value:"MS20-4011584");
script_xref(name:"MSFT", value:"MS20-4484291");
script_xref(name:"MSFT", value:"MS20-4484292");
script_xref(name:"MSFT", value:"MS20-4484293");
script_xref(name:"MSFT", value:"MS20-4484297");
script_xref(name:"MSFT", value:"MS20-4484298");
script_xref(name:"MSFT", value:"MS20-4484299");
script_xref(name:"MSFT", value:"MS20-4484301");
script_xref(name:"MSFT", value:"MS20-4484307");
script_xref(name:"MSFT", value:"MS20-4484308");
script_xref(name:"MSFT", value:"MS20-4484321");
script_xref(name:"MSFT", value:"MS20-4484322");
script_xref(name:"IAVA", value:"2020-A-0155-S");
script_name(english:"Security Updates for Microsoft SharePoint Server (April 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 remote code execution vulnerability exists in
Microsoft Word software when it fails to properly handle
objects in memory. An attacker who successfully
exploited the vulnerability could use a specially
crafted file to perform actions in the security context
of the current user. For example, the file could then
take actions on behalf of the logged-on user with the
same permissions as the current user. (CVE-2020-0980)
- A remote code execution vulnerability exists in
Microsoft SharePoint when the software fails to check
the source markup of an application package. An attacker
who successfully exploited the vulnerability could run
arbitrary code in the context of the SharePoint
application pool and the SharePoint server farm account.
Exploitation of this vulnerability requires that a user
uploads a specially crafted SharePoint application
package to an affected version of SharePoint. The
security update addresses the vulnerability by
correcting how SharePoint checks the source markup of
application packages. (CVE-2020-0920, CVE-2020-0929,
CVE-2020-0931, CVE-2020-0932, CVE-2020-0971,
CVE-2020-0974)
- 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-2020-0923,
CVE-2020-0924, CVE-2020-0925, CVE-2020-0926,
CVE-2020-0927, CVE-2020-0930, CVE-2020-0933,
CVE-2020-0954, CVE-2020-0973, CVE-2020-0978)
- 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-2020-0972,
CVE-2020-0975, CVE-2020-0976, CVE-2020-0977)");
# https://support.microsoft.com/en-us/help/4484301/security-update-for-sharepoint-server-2016-april-14-2020
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?14098d8a");
# https://support.microsoft.com/en-us/help/4484298/security-update-for-sharepoint-foundation-2010-april-14-2020
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0634cc8e");
# https://support.microsoft.com/en-us/help/4484299/security-update-for-sharepoint-server-2016-april-14-2020
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?b226f5e7");
# https://support.microsoft.com/en-us/help/4484322/security-update-for-sharepoint-foundation-2013-april-14-2020
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f210025f");
# https://support.microsoft.com/en-us/help/4484297/security-update-for-sharepoint-server-2010-april-14-2020
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?a6bffe1f");
# https://support.microsoft.com/en-us/help/4484321/security-update-for-sharepoint-foundation-2013-april-14-2020
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?301f9037");
# https://support.microsoft.com/en-us/help/4484292/security-update-for-sharepoint-server-2019-april-14
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?948ef665");
# https://support.microsoft.com/en-us/help/4484293/security-update-for-sharepoint-server-2010-april-14-2020
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?146e79ea");
# https://support.microsoft.com/en-us/help/4484307/security-update-for-sharepoint-server-2013-april-14-2020
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0f656ea7");
# https://support.microsoft.com/en-us/help/4484291/security-update-for-sharepoint-server-2019-language-pack
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0b112be9");
# https://support.microsoft.com/en-us/help/4484308/security-update-for-sharepoint-server-2013-april-14-2020
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?705dbbc1");
# https://support.microsoft.com/en-us/help/4011581/security-update-for-sharepoint-foundation-2013-april-14-2020
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?c81717de");
# https://support.microsoft.com/en-us/help/4011584/security-update-for-sharepoint-server-2013-april-14-2020
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?7c86af69");
script_set_attribute(attribute:"solution", value:
"Microsoft has released security updates for Microsoft SharePoint Server.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C");
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:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-0980");
script_set_attribute(attribute:"cvss3_score_source", value:"CVE-2020-0974");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"exploit_framework_core", value:"true");
script_set_attribute(attribute:"exploit_framework_canvas", value:"true");
script_set_attribute(attribute:"canvas_package", value:"CANVAS");
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:"2020/04/16");
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:2010");
script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:sharepoint_server:2013");
script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:sharepoint_server:2016");
script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:sharepoint_server:2019");
script_set_attribute(attribute:"stig_severity", value:"II");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Windows : Microsoft Bulletins");
script_copyright(english:"This script is Copyright (C) 2020-2024 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 = 'MS20-04';
kbs = make_list(
'4484298', # 2010 SP2 Foundation
'4484293', # 2010 SP2 Enterprise
'4011581', # 2013 SP1 Foundation
'4484321', # 2013 SP1 Foundation
'4484322', # 2013 SP1 Foundation
'4011584', # 2013 SP1 Enterprise
'4484307', # 2013 SP1 Enterprise
'4484308', # 2013 SP1 Enterprise
'4484299', # 2016 Enterprise
'4484301', # 2016 Enterprise
'4484291', # 2019 Language Pack*
'4484292' # 2019 Core
);
if (get_kb_item('Host/patch_management_checks'))
hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_HOLE);
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%.');
registry_init();
install = get_single_install(app_name:'Microsoft SharePoint Server');
kb_checks =
{
'2010':
{ '2':
{'Foundation':
[{
'kb' : '4484298',
'path' : hotfix_get_commonfilesdir(),
'append' : 'microsoft shared\\web server extensions\\14\\bin',
'file' : 'csisrv.dll',
'version' : '14.0.7248.5000',
'product_name': 'Microsoft SharePoint Foundation Server 2010 SP 2'
}],
'Server':
[{
'kb' : '4484293',
'path' : install['path'],
'append' :'webservices\\wordserver\\core',
'file' : 'msoserver.dll',
'version' : '14.0.7248.5000',
'product_name' : 'Microsoft SharePoint Enterprise Server 2010 SP 2'
}]
}
},
'2013':
{ '1':
{'Foundation':
[{
'kb' : '4011581',
'path' : install['path'],
'append' :'webservices\\conversionservices',
'file' : 'msoserver.dll',
'version' : '15.0.5233.1000',
'product_name' : 'Microsoft SharePoint Foundation Server 2013 SP1'
},
{
'kb' : '4484321',
'path' : hotfix_get_commonfilesdir(),
'append' : 'microsoft shared\\web server extensions\\15\\bin',
'file' : 'csisrv.dll',
'version' : '15.0.5233.1000',
'product_name' : 'Microsoft SharePoint Foundation Server 2013 SP1'
},
{
'kb' : '4484322',
'path' : hotfix_get_commonfilesdir(),
'append' : 'microsoft shared\\server15\\server setup controller',
'file' : 'wsssetup.dll',
'version' : '15.0.5233.1000',
'product_name' : 'Microsoft SharePoint Foundation Server 2013 SP1'
}],
'Server':
[{
'kb' : '4011584',
'path' : install['path'],
'append' : 'transformapps',
'file' : 'msoserver.dll',
'version' : '15.0.5233.1000',
'product_name' : 'Microsoft SharePoint Enterprise Server 2013 SP1'
},
{
'kb' : '4484307',
'path' : install['path'],
'append' : 'webservices\\conversionservices',
'file' : 'sword.dll',
'version' : '15.0.5233.1000',
'product_name' : 'Microsoft SharePoint Enterprise Server 2013 SP1'
},
{
'kb' : '4484308',
'path' : install['path'],
'append' : 'transformapps',
'file' : 'docxpageconverter.exe',
'version' : '15.0.5233.1000',
'product_name' : 'Microsoft SharePoint Enterprise Server 2013 SP1'
}]
}
},
'2016':
{ '0':
{'Server':
[{
'kb' : '4484299',
'path' : install['path'],
'append' : 'bin',
'file' : 'microsoft.sharepoint.publishing.dll',
'version' : '16.0.4993.1000',
'product_name' : 'Microsoft SharePoint Enterprise Server 2016'
},
{
'kb' : '4484301',
'path' : install['path'],
'append' :'bin\\1033',
'file' : 'notessetup.exe',
'version' : '16.0.4585.1000',
'product_name' : 'Microsoft SharePoint Enterprise Server 2016'
}]
}
},
'2019':
{ '0':
{'Server':
[ {
'kb' : '4484291',
'path' : install['path'],
'append' :'bin\\1033',
'file' : 'notessetup.exe',
'version' : '16.0.10358.20000',
'product_name' : 'Microsoft SharePoint Server 2019'
},
{
'kb' : '4484292',
'path' : install['path'],
'append' : 'bin',
'file' : 'ascalc.dll',
'version' : '16.0.10358.20000',
'product_name' : 'Microsoft SharePoint Server 2019'
}]
}
}
};
# 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();
reg_keys = get_kb_list('SMB/Registry/HKLM/SOFTWARE/Microsoft/Windows/CurrentVersion/Uninstall/*/DisplayName');
# 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'] == '4484298' ||
check['kb'] == '4011581' ||
check['kb'] == '4484321' ||
check['kb'] == '4484322' ||
check['kb'] == '4484308' ||
check['kb'] == '4484299' ||
check['kb'] == '4484301' ||
check['kb'] == '4484291' ||
check['kb'] == '4484292'
) 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_hole();
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-2020-0920
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0923
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0924
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0925
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0926
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0927
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0929
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0930
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0931
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0932
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0933
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0954
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0971
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0972
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0973
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0974
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0975
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0976
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0977
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0978
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0980
www.nessus.org/u?0634cc8e
www.nessus.org/u?0b112be9
www.nessus.org/u?0f656ea7
www.nessus.org/u?14098d8a
www.nessus.org/u?146e79ea
www.nessus.org/u?301f9037
www.nessus.org/u?705dbbc1
www.nessus.org/u?7c86af69
www.nessus.org/u?948ef665
www.nessus.org/u?a6bffe1f
www.nessus.org/u?b226f5e7
www.nessus.org/u?c81717de
www.nessus.org/u?f210025f
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
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
AI Score
Confidence
High
EPSS
Percentile
94.7%