CVSS2
Attack Vector
LOCAL
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
EPSS
Percentile
25.5%
The Windows Client/Server Run-time Subsystem (CSRSS) on the remote host has a privilege escalation vulnerability. Permissions are not properly validated when a lower-integrity process communicates a device event to a higher-integrity process. A local attacker could exploit this vulnerability to gain elevated privileges.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(55793);
script_version("1.16");
script_cvs_date("Date: 2018/11/15 20:50:31");
script_cve_id("CVE-2011-1967");
script_bugtraq_id(48992);
script_xref(name:"MSFT", value:"MS11-063");
script_xref(name:"MSKB", value:"2567680");
script_name(english:"MS11-063: Vulnerability in Windows Client/Server Run-time Subsystem Could Allow Elevation of Privilege (2567680)");
script_summary(english:"Checks the version of Winsrv.dll");
script_set_attribute(
attribute:"synopsis",
value:"The remote Windows host has a privilege escalation vulnerability."
);
script_set_attribute(
attribute:"description",
value:
"The Windows Client/Server Run-time Subsystem (CSRSS) on the remote host
has a privilege escalation vulnerability. Permissions are not properly
validated when a lower-integrity process communicates a device event to
a higher-integrity process. A local attacker could exploit this
vulnerability to gain elevated privileges."
);
script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2011/ms11-063");
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:L/AC:L/Au:N/C:C/I:C/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:"2011/08/09");
script_set_attribute(attribute:"patch_publication_date", value:"2011/08/09");
script_set_attribute(attribute:"plugin_publication_date", value:"2011/08/09");
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 = 'MS11-063';
kb = '2567680';
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(xp:'3', win2003:'2', vista:'2', win7:'0,1') <= 0) audit(AUDIT_OS_SP_NOT_VULN);
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 Windows Server 2008 R2
hotfix_is_vulnerable(os:"6.1", sp:1, file:"Winsrv.dll", version:"6.1.7601.21756", min_version:"6.1.7601.21000", dir:"\system32", bulletin:bulletin, kb:kb) ||
hotfix_is_vulnerable(os:"6.1", sp:1, file:"Winsrv.dll", version:"6.1.7601.17641", min_version:"6.1.7601.17000", dir:"\system32", bulletin:bulletin, kb:kb) ||
hotfix_is_vulnerable(os:"6.1", sp:0, file:"Winsrv.dll", version:"6.1.7600.20995", min_version:"6.1.7600.20000", dir:"\system32", bulletin:bulletin, kb:kb) ||
hotfix_is_vulnerable(os:"6.1", sp:0, file:"Winsrv.dll", version:"6.1.7600.16850", min_version:"6.1.7600.16000", dir:"\system32", bulletin:bulletin, kb:kb) ||
# Vista / Windows 2008
hotfix_is_vulnerable(os:"6.0", sp:2, file:"Winsrv.dll", version:"6.0.6002.22662", min_version:"6.0.6002.22000", dir:"\system32", bulletin:bulletin, kb:kb) ||
hotfix_is_vulnerable(os:"6.0", sp:2, file:"Winsrv.dll", version:"6.0.6002.18484", min_version:"6.0.6002.18000", dir:"\system32", bulletin:bulletin, kb:kb) ||
# Windows 2003 / XP x64
hotfix_is_vulnerable(os:"5.2", sp:2, file:"Winsrv.dll", version:"5.2.3790.4877", dir:"\system32", bulletin:bulletin, kb:kb) ||
# Windows XP x86
hotfix_is_vulnerable(os:"5.1", sp:3, arch:"x86", file:"Winsrv.dll", version:"5.1.2600.6125", 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');
}