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
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
AI Score
Confidence
High
EPSS
Percentile
99.5%
The remote Windows host is missing security update 4493450 or cumulative update 4493451. It is, therefore, affected by multiple vulnerabilities :
A security feature bypass vulnerability exists in Windows which could allow an attacker to bypass Device Guard when Windows improperly handles calls to the LUAFV driver (luafv.sys). An attacker who successfully exploited this vulnerability could circumvent a User Mode Code Integrity (UMCI) policy on the machine.
(CVE-2019-0732)
An information disclosure vulnerability exists when the Terminal Services component improperly discloses the contents of its memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise a users system. (CVE-2019-0839)
A remote code execution vulnerability exists in the way that the VBScript engine handles objects in memory. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user. (CVE-2019-0842)
A remote code execution vulnerability exists when Windows improperly handles objects in memory. An attacker who successfully exploited these vulnerabilities could take control of an affected system. (CVE-2019-0856)
An information disclosure vulnerability exists when the Windows TCP/IP stack improperly handles fragmented IP packets. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. (CVE-2019-0688)
A remote code execution vulnerability exists when the Microsoft XML Core Services MSXML parser processes user input. An attacker who successfully exploited the vulnerability could run malicious code remotely to take control of the users system. (CVE-2019-0790, CVE-2019-0791, CVE-2019-0792, CVE-2019-0793, CVE-2019-0795)
An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs;
view, change, or delete data; or create new accounts with full user rights. (CVE-2019-0803, CVE-2019-0859)
A remote code execution vulnerability exists in the way that the scripting engine handles objects in memory in Internet Explorer. The vulnerability could corrupt memory in such a way that an attacker could execute arbitrary code in the context of the current user. An attacker who successfully exploited the vulnerability could gain the same user rights as the current user.
(CVE-2019-0752, CVE-2019-0753, CVE-2019-0862)
A remote code execution vulnerability exists when the Windows Jet Database Engine improperly handles objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code on a victim system. An attacker could exploit this vulnerability by enticing a victim to open a specially crafted file. The update addresses the vulnerability by correcting the way the Windows Jet Database Engine handles objects in memory. (CVE-2019-0846, CVE-2019-0847, CVE-2019-0851, CVE-2019-0877, CVE-2019-0879)
An elevation of privilege vulnerability exists when Windows improperly handles calls to the LUAFV driver (luafv.sys). An attacker who successfully exploited this vulnerability could run arbitrary code in the security context of the local system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.
(CVE-2019-0730, CVE-2019-0731, CVE-2019-0805, CVE-2019-0836)
An information disclosure vulnerability exists when the Windows GDI component improperly discloses the contents of its memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. There are multiple ways an attacker could exploit the vulnerability, such as by convincing a user to open a specially crafted document, or by convincing a user to visit an untrusted webpage.
The security update addresses the vulnerability by correcting how the Windows GDI component handles objects in memory. (CVE-2019-0802, CVE-2019-0849)
An information disclosure vulnerability exists when Windows Task Scheduler improperly discloses credentials to Windows Credential Manager. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2019-0838)
An information disclosure vulnerability exists when the scripting engine does not properly handle objects in memory. An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2019-0835)
An elevation of privilege vulnerability exists when Windows improperly handles calls to the LUAFV driver (luafv.sys). An attacker who successfully exploited this vulnerability could set the short name of a file with a long name to an arbitrary short name, overriding the file system with limited privileges. (CVE-2019-0796)
An information disclosure vulnerability exists when the win32k component improperly provides kernel information.
An attacker who successfully exploited the vulnerability could obtain information to further compromise the users system. (CVE-2019-0848)
An information disclosure vulnerability exists when the Windows kernel improperly handles objects in memory. An attacker who successfully exploited this vulnerability could obtain information to further compromise the users system. (CVE-2019-0844)
An elevation of privilege vulnerability exists when the Windows Client Server Run-Time Subsystem (CSRSS) fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code. An attacker could then install programs;
view, change, or delete data; or create new accounts with full user rights. (CVE-2019-0735)
A remote code execution vulnerability exists when OLE automation improperly handles objects in memory. An attacker who successfully exploited the vulnerability could gain execution on the victim system.
(CVE-2019-0794)
A remote code execution vulnerability exists when the IOleCvt interface renders ASP webpage content. An attacker who successfully exploited the vulnerability could run malicious code remotely to take control of the users system. (CVE-2019-0845)
A tampering vulnerability exists when Microsoft browsers do not properly validate input under specific conditions. An attacker who exploited the vulnerability could pass custom command line parameters.
(CVE-2019-0764)
A remote code execution vulnerability exists in the way that the Windows Graphics Device Interface (GDI) handles objects in the memory. An attacker who successfully exploited this vulnerability could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. (CVE-2019-0853)
#
# (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(123941);
script_version("1.15");
script_set_attribute(attribute:"plugin_modification_date", value:"2024/06/17");
script_cve_id(
"CVE-2019-0688",
"CVE-2019-0730",
"CVE-2019-0731",
"CVE-2019-0732",
"CVE-2019-0735",
"CVE-2019-0752",
"CVE-2019-0753",
"CVE-2019-0764",
"CVE-2019-0790",
"CVE-2019-0791",
"CVE-2019-0792",
"CVE-2019-0793",
"CVE-2019-0794",
"CVE-2019-0795",
"CVE-2019-0796",
"CVE-2019-0802",
"CVE-2019-0803",
"CVE-2019-0805",
"CVE-2019-0835",
"CVE-2019-0836",
"CVE-2019-0838",
"CVE-2019-0839",
"CVE-2019-0842",
"CVE-2019-0844",
"CVE-2019-0845",
"CVE-2019-0846",
"CVE-2019-0847",
"CVE-2019-0848",
"CVE-2019-0849",
"CVE-2019-0851",
"CVE-2019-0853",
"CVE-2019-0856",
"CVE-2019-0859",
"CVE-2019-0862",
"CVE-2019-0877",
"CVE-2019-0879"
);
script_xref(name:"MSKB", value:"4493450");
script_xref(name:"MSKB", value:"4493451");
script_xref(name:"MSFT", value:"MS19-4493450");
script_xref(name:"MSFT", value:"MS19-4493451");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/05/03");
script_xref(name:"CISA-KNOWN-EXPLOITED", value:"2022/08/15");
script_xref(name:"CEA-ID", value:"CEA-2020-0129");
script_name(english:"KB4493450: Windows Server 2012 April 2019 Security Update");
script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by multiple vulnerabilities.");
script_set_attribute(attribute:"description", value:
"The remote Windows host is missing security update 4493450
or cumulative update 4493451. It is, therefore, affected by
multiple vulnerabilities :
- A security feature bypass vulnerability exists in
Windows which could allow an attacker to bypass Device
Guard when Windows improperly handles calls to the LUAFV
driver (luafv.sys). An attacker who successfully
exploited this vulnerability could circumvent a User
Mode Code Integrity (UMCI) policy on the machine.
(CVE-2019-0732)
- An information disclosure vulnerability exists when the
Terminal Services component improperly discloses the
contents of its memory. An attacker who successfully
exploited the vulnerability could obtain information to
further compromise a users system. (CVE-2019-0839)
- A remote code execution vulnerability exists in the way
that the VBScript engine handles objects in memory. The
vulnerability could corrupt memory in such a way that an
attacker could execute arbitrary code in the context of
the current user. An attacker who successfully exploited
the vulnerability could gain the same user rights as the
current user. (CVE-2019-0842)
- A remote code execution vulnerability exists when
Windows improperly handles objects in memory. An
attacker who successfully exploited these
vulnerabilities could take control of an affected
system. (CVE-2019-0856)
- An information disclosure vulnerability exists when the
Windows TCP/IP stack improperly handles fragmented IP
packets. An attacker who successfully exploited this
vulnerability could obtain information to further
compromise the users system. (CVE-2019-0688)
- A remote code execution vulnerability exists when the
Microsoft XML Core Services MSXML parser processes user
input. An attacker who successfully exploited the
vulnerability could run malicious code remotely to take
control of the users system. (CVE-2019-0790,
CVE-2019-0791, CVE-2019-0792, CVE-2019-0793,
CVE-2019-0795)
- An elevation of privilege vulnerability exists in
Windows when the Win32k component fails to properly
handle objects in memory. An attacker who successfully
exploited this vulnerability could run arbitrary code in
kernel mode. An attacker could then install programs;
view, change, or delete data; or create new accounts
with full user rights. (CVE-2019-0803, CVE-2019-0859)
- A remote code execution vulnerability exists in the way
that the scripting engine handles objects in memory in
Internet Explorer. The vulnerability could corrupt
memory in such a way that an attacker could execute
arbitrary code in the context of the current user. An
attacker who successfully exploited the vulnerability
could gain the same user rights as the current user.
(CVE-2019-0752, CVE-2019-0753, CVE-2019-0862)
- A remote code execution vulnerability exists when the
Windows Jet Database Engine improperly handles objects
in memory. An attacker who successfully exploited this
vulnerability could execute arbitrary code on a victim
system. An attacker could exploit this vulnerability by
enticing a victim to open a specially crafted file. The
update addresses the vulnerability by correcting the way
the Windows Jet Database Engine handles objects in
memory. (CVE-2019-0846, CVE-2019-0847, CVE-2019-0851,
CVE-2019-0877, CVE-2019-0879)
- An elevation of privilege vulnerability exists when
Windows improperly handles calls to the LUAFV driver
(luafv.sys). An attacker who successfully exploited this
vulnerability could run arbitrary code in the security
context of the local system. An attacker could then
install programs; view, change, or delete data; or
create new accounts with full user rights.
(CVE-2019-0730, CVE-2019-0731, CVE-2019-0805,
CVE-2019-0836)
- An information disclosure vulnerability exists when the
Windows GDI component improperly discloses the contents
of its memory. An attacker who successfully exploited
the vulnerability could obtain information to further
compromise the users system. There are multiple ways an
attacker could exploit the vulnerability, such as by
convincing a user to open a specially crafted document,
or by convincing a user to visit an untrusted webpage.
The security update addresses the vulnerability by
correcting how the Windows GDI component handles objects
in memory. (CVE-2019-0802, CVE-2019-0849)
- An information disclosure vulnerability exists when
Windows Task Scheduler improperly discloses credentials
to Windows Credential Manager. An attacker who
successfully exploited the vulnerability could obtain
information to further compromise the users system. An
attacker could then install programs; view, change, or
delete data; or create new accounts with full user
rights. (CVE-2019-0838)
- An information disclosure vulnerability exists when the
scripting engine does not properly handle objects in
memory. An attacker who successfully exploited the
vulnerability could obtain information to further
compromise the users system. (CVE-2019-0835)
- An elevation of privilege vulnerability exists when
Windows improperly handles calls to the LUAFV driver
(luafv.sys). An attacker who successfully exploited this
vulnerability could set the short name of a file with a
long name to an arbitrary short name, overriding the
file system with limited privileges. (CVE-2019-0796)
- An information disclosure vulnerability exists when the
win32k component improperly provides kernel information.
An attacker who successfully exploited the vulnerability
could obtain information to further compromise the users
system. (CVE-2019-0848)
- An information disclosure vulnerability exists when the
Windows kernel improperly handles objects in memory. An
attacker who successfully exploited this vulnerability
could obtain information to further compromise the users
system. (CVE-2019-0844)
- An elevation of privilege vulnerability exists when the
Windows Client Server Run-Time Subsystem (CSRSS) fails
to properly handle objects in memory. An attacker who
successfully exploited this vulnerability could run
arbitrary code. An attacker could then install programs;
view, change, or delete data; or create new accounts
with full user rights. (CVE-2019-0735)
- A remote code execution vulnerability exists when OLE
automation improperly handles objects in memory. An
attacker who successfully exploited the vulnerability
could gain execution on the victim system.
(CVE-2019-0794)
- A remote code execution vulnerability exists when the
IOleCvt interface renders ASP webpage content. An
attacker who successfully exploited the vulnerability
could run malicious code remotely to take control of the
users system. (CVE-2019-0845)
- A tampering vulnerability exists when Microsoft browsers
do not properly validate input under specific
conditions. An attacker who exploited the vulnerability
could pass custom command line parameters.
(CVE-2019-0764)
- A remote code execution vulnerability exists in the way
that the Windows Graphics Device Interface (GDI) handles
objects in the memory. An attacker who successfully
exploited this vulnerability could take control of the
affected system. An attacker could then install
programs; view, change, or delete data; or create new
accounts with full user rights. (CVE-2019-0853)");
# https://support.microsoft.com/en-us/help/4493450/windows-server-2012-update-kb4493450
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?e6bb344b");
# https://support.microsoft.com/en-us/help/4493451/windows-server-2012-update-kb4493451
script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?3b9c0466");
script_set_attribute(attribute:"solution", value:
"Apply Security Only update KB4493450 or Cumulative Update KB4493451.");
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:H/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:H/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2019-0853");
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:"exploited_by_malware", 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:"2019/04/09");
script_set_attribute(attribute:"patch_publication_date", value:"2019/04/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2019/04/09");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows_server_2012");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Windows : Microsoft Bulletins");
script_copyright(english:"This script is Copyright (C) 2019-2024 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("smb_check_rollup.nasl", "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("audit.inc");
include("smb_hotfixes_fcheck.inc");
include("smb_hotfixes.inc");
include("smb_func.inc");
include("misc_func.inc");
get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");
bulletin = "MS19-04";
kbs = make_list('4493450', '4493451');
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");
get_kb_item_or_exit("SMB/WindowsVersion", exit_code:1);
if (hotfix_check_sp_range(win8:'0') <= 0) audit(AUDIT_OS_SP_NOT_VULN);
# Windows 8 EOL
productname = get_kb_item_or_exit("SMB/ProductName", exit_code:1);
if ("Windows 8" >< productname) audit(AUDIT_OS_SP_NOT_VULN);
share = hotfix_get_systemdrive(as_share:TRUE, exit_on_fail:TRUE);
if (!is_accessible_share(share:share)) audit(AUDIT_SHARE_FAIL, share);
if (
smb_check_rollup(os:"6.2",
sp:0,
rollup_date:"04_2019",
bulletin:bulletin,
rollup_kb_list:[4493450, 4493451])
)
{
replace_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
hotfix_security_hole();
hotfix_check_fversion_end();
exit(0);
}
else
{
hotfix_check_fversion_end();
audit(AUDIT_HOST_NOT, hotfix_get_audit_report());
}
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0688
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0730
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0731
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0732
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0735
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0752
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0753
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0764
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0790
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0791
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0792
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0793
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0794
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0795
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0796
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0802
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0803
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0805
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0835
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0836
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0838
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0839
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0842
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0844
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0845
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0846
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0847
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0848
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0849
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0851
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0853
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0856
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0859
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0862
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0877
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0879
www.nessus.org/u?3b9c0466
www.nessus.org/u?e6bb344b
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
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
AI Score
Confidence
High
EPSS
Percentile
99.5%