MS07-031: Vulnerability in the Windows Schannel Security Package Could Allow Remote Code Execution (935840)

#
# (C) Tenable Network Security, Inc.
#

include("compat.inc");

if (description)
{
 script_id(25484);
 script_version("1.31");
 script_cvs_date("Date: 2018/11/15 20:50:30");

 script_cve_id("CVE-2007-2218");
 script_bugtraq_id(24416);
 script_xref(name:"MSFT", value:"MS07-031");
 script_xref(name:"MSKB", value:"935840");
 
 script_xref(name:"CERT", value:"810073");

 script_name(english:"MS07-031: Vulnerability in the Windows Schannel Security Package Could Allow Remote Code Execution (935840)");
 script_summary(english:"Determines the presence of update 935840");

 script_set_attribute(attribute:"synopsis", value:
"Arbitrary code can be executed on the remote host through the web
browser.");
 script_set_attribute(attribute:"description", value:
"The remote host is running a version of Windows that has a bug in the
SSL/TLS server-key exchange handling routine that may allow an attacker
to execute arbitrary code on the remote host by luring a user on the
remote host into visiting a rogue website.

On Windows 2000 and 2003 this vulnerability only results in a crash of
the web browser.");
 script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2007/ms07-031");
 script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Windows 2000, XP, and
2003.");
 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: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:"2007/06/12");
 script_set_attribute(attribute:"patch_publication_date", value:"2007/06/12");
 script_set_attribute(attribute:"plugin_publication_date", value:"2007/06/12");

 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_copyright(english:"This script is Copyright (C) 2007-2018 Tenable Network Security, Inc.");
 script_family(english:"Windows : Microsoft Bulletins");

 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 = 'MS07-031';
kb = '935840';

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(win2k:'4,5', xp:'2', win2003:'1,2') <= 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 (
  hotfix_is_vulnerable(os:"5.2", sp:2, file:"Schannel.dll", version:"5.2.3790.4068", dir:"\System32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"5.2", sp:1, file:"Schannel.dll", version:"5.2.3790.2924", dir:"\System32", bulletin:bulletin, kb:kb) ||

  hotfix_is_vulnerable(os:"5.1", file:"Schannel.dll", version:"5.1.2600.3126", dir:"\System32", bulletin:bulletin, kb:kb) ||

  hotfix_is_vulnerable(os:"5.0", file:"Schannel.dll", version:"5.1.2195.7136", 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');
}