MS15-014: Vulnerability in Group Policy Could Allow Security Feature Bypass (3004361)

2015-02-10T00:00:00
ID SMB_NT_MS15-014.NASL
Type nessus
Reporter This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.
Modified 2020-01-02T00:00:00

Description

The version of Windows running on the remote host is affected by a security downgrade vulnerability that affects workstations and servers configured to use Group Policy. A man-in-the-middle attacker, via modified domain controller responses sent to targeted systems, can cause the policy file to become corrupted and unreadable, resulting in the Group Policy settings reverting to their default, potentially less secure, state.

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

include("compat.inc");

if (description)
{
  script_id(81267);
  script_version("1.8");
  script_cvs_date("Date: 2019/11/25");

  script_cve_id("CVE-2015-0009");
  script_bugtraq_id(72476);
  script_xref(name:"CERT", value:"787252");
  script_xref(name:"MSFT", value:"MS15-014");
  script_xref(name:"MSKB", value:"3004361");
  script_xref(name:"IAVB", value:"2015-B-0017");

  script_name(english:"MS15-014: Vulnerability in Group Policy Could Allow Security Feature Bypass (3004361)");
  script_summary(english:"Checks the file version of scesrv.dll.");

  script_set_attribute(attribute:"synopsis", value:
"The remote Windows host is affected by a security downgrade
vulnerability.");
  script_set_attribute(attribute:"description", value:
"The version of Windows running on the remote host is affected by a
security downgrade vulnerability that affects workstations and servers
configured to use Group Policy. A man-in-the-middle attacker, via
modified domain controller responses sent to targeted systems, can
cause the policy file to become corrupted and unreadable, resulting in
the Group Policy settings reverting to their default, potentially less
secure, state.");
  script_set_attribute(attribute:"see_also", value:"https://docs.microsoft.com/en-us/security-updates/SecurityBulletins/2015/ms15-014");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a set of patches for Windows 2003, Vista, 2008,
7, 2008 R2, 8, 2012, 8.1, and 2012 R2.");
  script_set_cvss_base_vector("CVSS2#AV:A/AC:L/Au:N/C:N/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2015-0009");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2015/02/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2015/02/10");
  script_set_attribute(attribute:"plugin_publication_date", value:"2015/02/10");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:microsoft:windows");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows : Microsoft Bulletins");

  script_copyright(english:"This script is Copyright (C) 2015-2019 and is owned by Tenable, Inc. or an Affiliate thereof.");

  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 = 'MS15-014';
kb = '3004361';

kbs = make_list(kb);
if (get_kb_item("Host/patch_management_checks")) hotfix_check_3rd_party(bulletin:bulletin, kbs:kbs, severity:SECURITY_NOTE);

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:'2', win7:'1', win8:'0', win81:'0') <= 0) audit(AUDIT_OS_SP_NOT_VULN);

productname = get_kb_item_or_exit("SMB/ProductName", exit_code:1);
# Some of the 2k3 checks could flag XP 64, which is unsupported
if ("Windows XP" >< productname) audit(AUDIT_OS_SP_NOT_VULN);

share = hotfix_get_systemdrive(as_share:TRUE, exit_on_fail:TRUE);
if (!is_accessible_share(share:share)) audit(AUDIT_SHARE_FAIL, share);

if (
  # Windows 8.1 / Windows Server 2012 R2
  hotfix_is_vulnerable(os:"6.3", sp:0, file:"scesrv.dll", version:"6.3.9600.17552", min_version:"6.3.9600.16000", dir:"\system32", bulletin:bulletin, kb:kb) ||

  # Windows 8 / Windows Server 2012
  hotfix_is_vulnerable(os:"6.2", sp:0, file:"scesrv.dll", version:"6.2.9200.21317", min_version:"6.2.9200.20000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.2", sp:0, file:"scesrv.dll", version:"6.2.9200.17200", min_version:"6.2.9200.16000", dir:"\system32", bulletin:bulletin, kb:kb) ||

  # Windows 7 / Server 2008 R2
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"scesrv.dll", version:"6.1.7601.22894", min_version:"6.1.7601.22000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.1", sp:1, file:"scesrv.dll", version:"6.1.7601.18686", 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:"scesrv.dll", version:"6.0.6002.23558", min_version:"6.0.6002.23000", dir:"\system32", bulletin:bulletin, kb:kb) ||
  hotfix_is_vulnerable(os:"6.0", sp:2, file:"scesrv.dll", version:"6.0.6002.19251", min_version:"6.0.6001.18000", dir:"\system32", bulletin:bulletin, kb:kb) ||

  # Windows Server 2003
  hotfix_is_vulnerable(os:"5.2", sp:2, file:"scesrv.dll", version:"5.2.3790.5492", dir:"\system32", bulletin:bulletin, kb:kb)
)
{
  set_kb_item(name:'SMB/Missing/'+bulletin, value:TRUE);
  hotfix_security_note();
  hotfix_check_fversion_end();
  exit(0);
}
else
{
  hotfix_check_fversion_end();
  audit(AUDIT_HOST_NOT, 'affected');
}