CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
AV:N/AC:M/Au:N/C:N/I:N/A:C
EPSS
Percentile
98.4%
The remote Windows host contains a flaw in the Windows kernel such that fails to properly validate array indexes when loading TrueType font files, therefore making it vulnerable to a denial of service attack. An attacker can exploit this issue by placing a specially crafted TrueType font file on a network share or WebDAV location the victim is likely to visit.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(56737);
script_version("1.18");
script_cvs_date("Date: 2018/11/15 20:50:31");
script_cve_id("CVE-2011-2004");
script_bugtraq_id(50510);
script_xref(name:"CERT", value:"675073");
script_xref(name:"MSFT", value:"MS11-084");
script_xref(name:"MSKB", value:"2617657");
script_name(english:"MS11-084: Vulnerability in Windows Kernel-Mode Drivers Could Allow Denial of Service (2617657)");
script_summary(english:"Checks version of win32k.sys");
script_set_attribute(
attribute:"synopsis",
value:
"The remote Windows host contains a component that is susceptible to a
denial of service attack."
);
script_set_attribute(
attribute:"description",
value:
"The remote Windows host contains a flaw in the Windows kernel such that
fails to properly validate array indexes when loading TrueType font
files, therefore making it vulnerable to a denial of service attack. An
attacker can exploit this issue by placing a specially crafted TrueType
font file on a network share or WebDAV location the victim is likely to
visit."
);
script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2011/ms11-084");
script_set_attribute(attribute:"solution", value:"Microsoft has released a set of patches for Windows 7 and 2008 R2.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:C");
script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
script_set_attribute(attribute:"exploit_available", value:"false");
script_set_attribute(attribute:"vuln_publication_date", value:"2011/11/08");
script_set_attribute(attribute:"patch_publication_date", value:"2011/11/08");
script_set_attribute(attribute:"plugin_publication_date", value:"2011/11/08");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Windows : Microsoft Bulletins");
script_copyright(english:"This script is Copyright (C) 2011-2018 Tenable Network Security, Inc.");
script_dependencies("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_func.inc");
include("smb_hotfixes.inc");
include("smb_hotfixes_fcheck.inc");
include("misc_func.inc");
get_kb_item_or_exit("SMB/MS_Bulletin_Checks/Possible");
bulletin = 'MS11-084';
kb = '2617657';
kbs = make_list(kb);
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(win7:'0,1') <= 0) audit(AUDIT_OS_SP_NOT_VULN);
if (hotfix_check_server_core() == 1) audit(AUDIT_WIN_SERVER_CORE);
rootfile = hotfix_get_systemroot();
if (!rootfile) exit(1, "Failed to get the system root.");
share = hotfix_path2share(path:rootfile);
if (!is_accessible_share(share:share)) audit(AUDIT_SHARE_FAIL, share);
if (
# Windows 7 and Server 2008 R2
hotfix_is_vulnerable(os:"6.1", sp:0, file:"win32k.sys", version:"6.1.7600.16889", min_version:"6.1.7600.16000", dir:"\system32", bulletin:bulletin, kb:kb) ||
hotfix_is_vulnerable(os:"6.1", sp:0, file:"win32k.sys", version:"6.1.7600.21060", min_version:"6.1.7600.20000", dir:"\system32", bulletin:bulletin, kb:kb) ||
hotfix_is_vulnerable(os:"6.1", sp:1, file:"win32k.sys", version:"6.1.7601.17697", min_version:"6.1.7601.17000", dir:"\system32", bulletin:bulletin, kb:kb) ||
hotfix_is_vulnerable(os:"6.1", sp:1, file:"win32k.sys", version:"6.1.7601.21828", min_version:"6.1.7601.21000", dir:"\system32", bulletin:bulletin, kb:kb)
)
{
set_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, 'affected');
}