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
EPSS
Percentile
96.8%
The remote host is running a version of the Windows kernel that is affected by a remote code execution vulnerability. An attacker can exploit this by causing a user to visit a network share containing a specially crafted OpenType font (OTF). The attacker can exploit this issue to execute arbitrary code in kernel mode and take complete control of the affected system.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(55121);
script_version("1.14");
script_cvs_date("Date: 2018/11/15 20:50:30");
script_cve_id("CVE-2011-1873");
script_bugtraq_id(48183);
script_xref(name:"MSFT", value:"MS11-041");
script_xref(name:"MSKB", value:"2525694");
script_name(english:"MS11-041: Vulnerability in Windows Kernel-Mode Drivers Could Allow Remote Code Execution (2525694)");
script_summary(english:"Checks version of Win32k.sys");
script_set_attribute(
attribute:"synopsis",
value:
"The remote Windows kernel is affected by a remote code execution
vulnerability."
);
script_set_attribute(
attribute:"description",
value:
"The remote host is running a version of the Windows kernel that is
affected by a remote code execution vulnerability. An attacker can
exploit this by causing a user to visit a network share containing a
specially crafted OpenType font (OTF). The attacker can exploit this
issue to execute arbitrary code in kernel mode and take complete control
of the affected system."
);
script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2011/ms11-041");
script_set_attribute(
attribute:"solution",
value:
"Microsoft has released a set of patches for Windows XP, 2003, Vista,
2008, 7, and 2008 R2."
);
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_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:"vuln_publication_date", value:"2011/06/14");
script_set_attribute(attribute:"patch_publication_date", value:"2011/06/14");
script_set_attribute(attribute:"plugin_publication_date", value:"2011/06/15");
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_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 = 'MS11-041';
kb = "2525694";
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(win2003:'2', vista:'1,2', win7:'0,1') <= 0) audit(AUDIT_OS_SP_NOT_VULN);
arch = get_kb_item_or_exit('SMB/ARCH', exit_code:1);
if (arch != 'x64') exit(0, "The host is not affected since it is not running a 64-bit version of Windows.");
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 / 2008 R2
hotfix_is_vulnerable(os:"6.1", sp:1, file:"Win32k.sys", version:"6.1.7601.21735", min_version:"6.1.7601.21000", dir:"\system32", bulletin:bulletin, kb:kb) ||
hotfix_is_vulnerable(os:"6.1", sp:1, file:"Win32k.sys", version:"6.1.7601.17622", min_version:"6.1.7601.17000", dir:"\system32", bulletin:bulletin, kb:kb) ||
hotfix_is_vulnerable(os:"6.1", sp:0, file:"Win32k.sys", version:"6.1.7600.20975", min_version:"6.1.7600.20000", dir:"\system32", bulletin:bulletin, kb:kb) ||
hotfix_is_vulnerable(os:"6.1", sp:0, file:"Win32k.sys", version:"6.1.7600.16821", min_version:"6.1.7600.16000", dir:"\system32", bulletin:bulletin, kb:kb) ||
# Windows Vista / 2008
hotfix_is_vulnerable(os:"6.0", sp:2, file:"Win32k.sys", version:"6.0.6002.22646", min_version:"6.0.6002.22000", dir:"\system32", bulletin:bulletin, kb:kb) ||
hotfix_is_vulnerable(os:"6.0", sp:2, file:"Win32k.sys", version:"6.0.6002.18469", min_version:"6.0.6002.18000", dir:"\system32", bulletin:bulletin, kb:kb) ||
hotfix_is_vulnerable(os:"6.0", sp:1, file:"Win32k.sys", version:"6.0.6001.22923", min_version:"6.0.6001.22000", dir:"\system32", bulletin:bulletin, kb:kb) ||
hotfix_is_vulnerable(os:"6.0", sp:1, file:"Win32k.sys", version:"6.0.6001.18651", min_version:"6.0.6001.18000", dir:"\system32", bulletin:bulletin, kb:kb) ||
# Windows 2003 / XP 64-bit
hotfix_is_vulnerable(os:"5.2", sp:2, file:"Win32k.sys", version:"5.2.3790.4868", 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');
}