| code |
#
# (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(125227);
script_version("1.5");
script_cvs_date("Date: 2019/12/06");
script_cve_id(
"CVE-2019-0949",
"CVE-2019-0950",
"CVE-2019-0951",
"CVE-2019-0952",
"CVE-2019-0956",
"CVE-2019-0957",
"CVE-2019-0958",
"CVE-2019-0963"
);
script_bugtraq_id(
108198,
108201,
108203,
108209,
108213,
108215,
108216,
108218
);
script_xref(name:"MSKB", value:"4464573");
script_xref(name:"MSKB", value:"4464564");
script_xref(name:"MSKB", value:"4464556");
script_xref(name:"MSKB", value:"4464549");
script_xref(name:"MSFT", value:"MS19-4464573");
script_xref(name:"MSFT", value:"MS19-4464564");
script_xref(name:"MSFT", value:"MS19-4464556");
script_xref(name:"MSFT", value:"MS19-4464549");
script_name(english:"Security Updates for Microsoft SharePoint Server (May 2019)");
script_summary(english:"Checks for Microsoft security updates.");
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 :
- An information disclosure 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-2019-0956)
- An elevation of privilege 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-2019-0957,
CVE-2019-0958)
- A remote code execution vulnerability exists in
Microsoft SharePoint Server when it fails to properly
identify and filter unsafe ASP.Net web controls. An
authenticated attacker who successfully exploited the
vulnerability could use a specially crafted page to
perform actions in the security context of the
SharePoint application pool process. (CVE-2019-0952)
- 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-2019-0963)
- 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-2019-0949,
CVE-2019-0950, CVE-2019-0951)");
# https://support.microsoft.com/en-ie/help/4464573/description-of-the-security-update-for-sharepoint-foundation-2010-may
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?cd24cf15");
# https://support.microsoft.com/en-ie/help/4464564/description-of-the-security-update-for-sharepoint-foundation-2013-may
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?10270ee1");
# https://support.microsoft.com/en-us/help/4464556/description-of-the-security-update-for-sharepoint-server-2019-may-14
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?2f5a91df");
# https://support.microsoft.com/en-us/help/4464549/description-of-the-security-update-for-sharepoint-enterprise-server
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?f305a65b");
script_set_attribute(attribute:"solution", value:
"Microsoft has released the following security updates to address this issue:
-KB4464573
-KB4464564
-KB4464556
-KB4464549");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P");
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:H/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-2019-0958");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"vuln_publication_date", value:"2019/05/14");
script_set_attribute(attribute:"patch_publication_date", value:"2019/05/14");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/05/16");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:sharepoint");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Windows : Microsoft Bulletins");
script_copyright(english:"This script is Copyright (C) 2019 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 = 'MS19-05';
kbs = make_list(
'4464549', # 2016
'4464556', # 2019
'4464564', # 2013
'4464573' # 2010
);
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%.');
registry_init();
vuln = FALSE;
port = kb_smb_transport();
install = get_single_install(app_name:'Microsoft SharePoint Server');
# direct reference lookup of product...
kb_checks =
{
'2010':
# direct reference lookup of SP...
{ '2':
# direct reference lookup of edition...
{ 'Foundation':
[{
'kb' : '4464573',
'path' : hotfix_get_commonfilesdir(),
'append' : 'microsoft shared\\web server extensions\\14\\isapi',
'file' : 'microsoft.sharepoint.dll',
'version' : '14.0.7235.5000',
'product_name' : 'Microsoft SharePoint Foundation Server 2010 SP 2'
}]
}
},
'2013':
# direct reference lookup of SP...
{ '1':
# direct reference lookup of edition...
{ 'Foundation':
[{
'kb' : '4464564',
'path' : hotfix_get_commonfilesdir(),
'append' : 'microsoft shared\\Web Server Extensions\\15\\config\\bin',
'file' : 'stssoap.dll',
'version' : '15.0.4981.1000',
'product_name' : 'Microsoft SharePoint Foundation Server 2013 SP 1'
}]
}
},
'2016':
# direct reference lookup of SP...
{ '0':
# direct reference lookup of edition...
{ 'Server':
[{
'kb' : '4464549',
'path' : install['path'],
'append' : 'TransformApps',
'file' : 'docxpageconverter.exe',
'version' : '16.0.4849.1000',
'product_name' : 'Microsoft SharePoint Server 2016'
}]
}
},
'2019':
# direct reference lookup of SP...
{ '0':
# direct reference lookup of edition...
{ 'Server':
[{
'kb' : '4464556',
'path' : install['path'],
'append' : 'BIN',
'file' : 'ascalc.dll',
'version' : '16.0.10345.12101',
'product_name' : 'Microsoft SharePoint Enterprise Server 2019'
}]
}
}
};
# get the specific product / path
params = kb_checks[install['Product']][install['SP']][install['Edition']][0];
# audit if not affected
if (isnull(params)) audit(AUDIT_INST_VER_NOT_VULN, "Microsoft SharePoint Server");
are_we_vuln = HCF_OLDER;
# grab the path otherwise
path = hotfix_append_path(path:params['path'], value:params['append']);
# then - check if we are vuln
are_we_vuln = hotfix_check_fversion(file:params['file'], version:params['version'], path:path, kb:params['kb'], product:params['product_name']);
if (are_we_vuln != HCF_OK && params['kb'] == '4464573' && get_kb_item("SMB/Registry/Uninstall/Enumerated"))
{
display_names = get_kb_list_or_exit('SMB/Registry/HKLM/SOFTWARE/Microsoft/Windows/CurrentVersion/Uninstall/*/DisplayName');
if (display_names)
{
foreach item (keys(display_names))
{
if ('KB'+params['kb'] >< display_names[item])
{
are_we_vuln = HCF_OK;
break;
}
}
if (are_we_vuln)
{
report = '\n';
if (params['product_name'])
report += ' Product : ' + params['product_name'] + '\n';
if (params['kb'])
report += ' KB : ' + params['kb'] + '\n';
hotfix_add_report(report, kb:params['kb']);
}
}
}
xss = FALSE;
if (params['kb'] == '4464564')
xss = TRUE;
if (are_we_vuln == HCF_OLDER)
{
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');
}
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