MS10-049: Vulnerabilities in SChannel could allow Remote Code Execution (980436)

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

include("compat.inc");

if (description)
{
  script_id(48286);
  script_version("1.21");
  script_cvs_date("Date: 2018/11/15 20:50:30");

  script_cve_id("CVE-2009-3555", "CVE-2010-2566");
  script_bugtraq_id(36935, 42246);
  script_xref(name:"MSFT", value:"MS10-049");
  script_xref(name:"MSKB", value:"980436");

  script_name(english:"MS10-049: Vulnerabilities in SChannel could allow Remote Code Execution (980436)");
  script_summary(english:"Checks version of Schannel.dll");

  script_set_attribute(attribute:"synopsis", value:
"It may be possible to execute arbitrary code on the remote Windows
host using the Secure Channel security package.");
  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 one or more of the
following vulnerabilities :

  - The SChannel authentication component allows a client to
    renegotiate the connection after the initial handshake,
    which could be abused to inject information into an encrypted
    connection, effectively sending traffic spoofing an
    authenticated client. (CVE-2009-3555)

  - The way that SChannel validates a certificate request message
    sent by a server could lead to a denial of service or even allow
    execution of arbitrary code if an attacker can trick a user on
    the affected system into connecting to malicious web server over
   SSL or TLS. (CVE-2010-2566)");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2010/ms10-049");
  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:POC/RL:OF/RC:C");
  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");
  script_cwe_id(310);

  script_set_attribute(attribute:"vuln_publication_date", value:"2009/11/04");
  script_set_attribute(attribute:"patch_publication_date", value:"2010/08/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2010/08/11");

  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 = 'MS10-049';
kbs = make_list("980436");
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:'1,2', win7:'0') <= 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);

kb = '980436';
if (
  # Windows 7 / Server 2008 R2
  hotfix_is_vulnerable(os:"6.1", sp:0,             file:"Schannel.dll", version:"6.1.7600.20735", min_version:"6.1.7600.20000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.1", sp:0,             file:"Schannel.dll", version:"6.1.7600.16612", 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:"6.0.6002.22422", min_version:"6.0.6002.20000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.0", sp:2,             file:"Schannel.dll", version:"6.0.6002.18269", min_version:"6.0.6002.18000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.0", sp:1,             file:"Schannel.dll", version:"6.0.6001.22709", min_version:"6.0.6001.20000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.0", sp:1,             file:"Schannel.dll", version:"6.0.6001.18490", min_version:"6.0.6001.18000", dir:"\system32", bulletin:bulletin, kb:kb) ||

  # Windows 2003
  hotfix_is_vulnerable(os:"5.2", sp:2,             file:"Schannel.dll", version:"5.2.3790.4724", dir:"\System32", bulletin:bulletin, kb:kb) ||

  # Windows XP
  hotfix_is_vulnerable(os:"5.1", sp:3, arch:"x86", file:"Schannel.dll", version:"5.1.2600.6006", dir:"\System32", bulletin:bulletin, kb:kb)
)
{
  set_kb_item(name:"SMB/Missing/MS10-049", value:TRUE);
  hotfix_security_hole();

  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, 'affected');
}