7.1 High
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
0.921 High
EPSS
Percentile
99.0%
The remote Windows host is running a version of the Secure Channel (SChannel) security package that is affected by a denial of service vulnerability. This flaw exists in the way that SChannel processes client certificates.
A remote attacker could send a specially crafted network packet to the host that would cause the LSASS service to stop responding and the system to restart.
#
# (C) Tenable Network Security, Inc.
#
include("compat.inc");
if (description)
{
script_id(49962);
script_version("1.20");
script_cvs_date("Date: 2018/11/15 20:50:30");
script_cve_id("CVE-2010-3229");
script_bugtraq_id(43780);
script_xref(name:"MSFT", value:"MS10-085");
script_xref(name:"MSKB", value:"2207566");
script_name(english:"MS10-085: Vulnerability in SChannel Could Allow Denial of Service (2207566)");
script_summary(english:"Checks version of Schannel.dll");
script_set_attribute(attribute:"synopsis", value:
"The remote Windows host has a denial of service vulnerability.");
script_set_attribute(attribute:"description", value:
"The remote Windows host is running a version of the Secure Channel
(SChannel) security package that is affected by a denial of service
vulnerability. This flaw exists in the way that SChannel processes
client certificates.
A remote attacker could send a specially crafted network packet to the
host that would cause the LSASS service to stop responding and the
system to restart.");
script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2010/ms10-085");
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: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:"2010/10/12");
script_set_attribute(attribute:"patch_publication_date", value:"2010/10/12");
script_set_attribute(attribute:"plugin_publication_date", value:"2010/10/13");
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) 2010-2018 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 = 'MS10-085';
kbs = make_list("2207566");
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(vista:'1,2', win7:'0') <= 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);
kb = "2207566";
if (
# Windows 7 / Server 2008 R2
hotfix_is_vulnerable(os:"6.1", sp:0, file:"Schannel.dll", version:"6.1.7600.20785", min_version:"6.1.7600.20000", dir:"\system32", bulletin:bulletin, kb:kb) ||
hotfix_is_vulnerable(os:"6.1", sp:0, file:"Schannel.dll", version:"6.1.7600.16661", min_version:"6.1.7600.16000", dir:"\system32", bulletin:bulletin, kb:kb) ||
# Vista / Windows Server 2008
hotfix_is_vulnerable(os:"6.0", sp:2, file:"Schannel.dll", version:"6.0.6002.22463", min_version:"6.0.6002.20000", dir:"\system32", bulletin:bulletin, kb:kb) ||
hotfix_is_vulnerable(os:"6.0", sp:2, file:"Schannel.dll", version:"6.0.6002.18290", min_version:"6.0.6002.18000", dir:"\system32", bulletin:bulletin, kb:kb) ||
hotfix_is_vulnerable(os:"6.0", sp:1, file:"Schannel.dll", version:"6.0.6001.22739", min_version:"6.0.6001.20000", dir:"\system32", bulletin:bulletin, kb:kb) ||
hotfix_is_vulnerable(os:"6.0", sp:1, file:"Schannel.dll", version:"6.0.6001.18507", min_version:"6.0.6001.18000", dir:"\system32", bulletin:bulletin, kb:kb)
)
{
set_kb_item(name:"SMB/Missing/MS10-085", value:TRUE);
hotfix_security_hole();
hotfix_check_fversion_end();
exit(0);
}
else
{
hotfix_check_fversion_end();
audit(AUDIT_HOST_NOT, 'affected');
}