Vulnerabilities > CVE-2007-5761 - Permissions, Privileges, and Access Controls vulnerability in Motorola Netoctopus 5.1.2Build1011

047910
CVSS 7.2 - HIGH
Attack vector
LOCAL
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
COMPLETE
Integrity impact
COMPLETE
Availability impact
COMPLETE
local
low complexity
motorola
CWE-264
nessus

Summary

The NantSys device 5.0.0.115 in Motorola netOctopus 5.1.2 build 1011 has weak permissions for the \\.\NantSys device interface (nantsys.sys), which allows local users to gain privileges or cause a denial of service (system crash), as demonstrated by modifying the SYSENTER_EIP_MSR CPU Model Specific Register (MSR) value.

Vulnerable Configurations

Part Description Count
Application
Motorola
1

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Accessing, Modifying or Executing Executable Files
    An attack of this type exploits a system's configuration that allows an attacker to either directly access an executable file, for example through shell access; or in a possible worst case allows an attacker to upload a file and then execute it. Web servers, ftp servers, and message oriented middleware systems which have many integration points are particularly vulnerable, because both the programmers and the administrators must be in synch regarding the interfaces and the correct privileges for each interface.
  • Leverage Executable Code in Non-Executable Files
    An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
  • Blue Boxing
    This type of attack against older telephone switches and trunks has been around for decades. A tone is sent by an adversary to impersonate a supervisor signal which has the effect of rerouting or usurping command of the line. While the US infrastructure proper may not contain widespread vulnerabilities to this type of attack, many companies are connected globally through call centers and business process outsourcing. These international systems may be operated in countries which have not upgraded Telco infrastructure and so are vulnerable to Blue boxing. Blue boxing is a result of failure on the part of the system to enforce strong authorization for administrative functions. While the infrastructure is different than standard current applications like web applications, there are historical lessons to be learned to upgrade the access control for administrative functions.
  • Restful Privilege Elevation
    Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
  • Target Programs with Elevated Privileges
    This attack targets programs running with elevated privileges. The attacker would try to leverage a bug in the running program and get arbitrary code to execute with elevated privileges. For instance an attacker would look for programs that write to the system directories or registry keys (such as HKLM, which stores a number of critical Windows environment variables). These programs are typically running with elevated privileges and have usually not been designed with security in mind. Such programs are excellent exploit targets because they yield lots of power when they break. The malicious user try to execute its code at the same level as a privileged system call.

Nessus

NASL familyWindows
NASL idNETOCTOPUS_AGENT_MSR_PRIV_ESCALATION.NASL
descriptionnetOctopus Agent, an asset management agent, is installed on the remote host. The installed version of netOctopus Agent includes a driver, named
last seen2020-06-01
modified2020-06-02
plugin id29928
published2008-01-14
reporterThis script is Copyright (C) 2008-2018 Tenable Network Security, Inc.
sourcehttps://www.tenable.com/plugins/nessus/29928
titlenetOctopus Agent nantsys.sys MSR Write Local Privilege Escalation
code
#
#  (C) Tenable Network Security, Inc.
#


include("compat.inc");

if (description)
{
  script_id(29928);
  script_version("1.13");
 script_cvs_date("Date: 2018/11/15 20:50:27");

  script_cve_id("CVE-2007-5761");
  script_bugtraq_id(27175);

  script_name(english:"netOctopus Agent nantsys.sys MSR Write Local Privilege Escalation");
  script_summary(english:"Checks existence of nantsys.sys");

 script_set_attribute(attribute:"synopsis", value:
"The remote Windows host contains a driver that is affected by a local
privilege escalation vulnerability.");
 script_set_attribute(attribute:"description", value:
"netOctopus Agent, an asset management agent, is installed on the
remote host.

The installed version of netOctopus Agent includes a driver, named
'nantsys.sys', that exposes a device interface writable by all local
users, allowing them to read and write arbitrary CPU Model Specific
Registers (MSRs). A local user could leverage this issue to execute
arbitrary code in kernel mode.");
  # http://www.verisigninc.com/en_US/products-and-services/network-intelligence-availability/idefense/public-vulnerability-reports/articles/index.xhtml?id=636
 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d698705a");
 script_set_attribute(attribute:"see_also", value:"https://www.securityfocus.com/archive/1/485911/30/0/threaded" );
 script_set_attribute(attribute:"solution", value:
"Remove the affected driver using the vendor-supplied script referenced
in the advisory above.");
 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_cwe_id(264);

 script_set_attribute(attribute:"plugin_publication_date", value:"2008/01/14");

script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/a:motorola:netoctopus");
script_end_attributes();


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

  script_copyright(english:"This script is Copyright (C) 2008-2018 Tenable Network Security, Inc.");

  script_dependencies("smb_hotfixes.nasl");
  script_require_keys("SMB/Registry/Enumerated");
  script_require_ports(139, 445);

  exit(0);
}


include("audit.inc");
include("smb_func.inc");


if (!get_kb_item("SMB/Registry/Enumerated")) exit(0);


# Connect to the appropriate share.
port    =  kb_smb_transport();
login   =  kb_smb_login();
pass    =  kb_smb_password();
domain  =  kb_smb_domain();

if(! smb_session_init()) audit(AUDIT_FN_FAIL, 'smb_session_init');

rc = NetUseAdd(login:login, password:pass, domain:domain, share:"IPC$");
if (rc != 1) {
  NetUseDel();
  audit(AUDIT_SHARE_FAIL,"IPC$");
}


# Connect to remote registry.
hklm = RegConnectRegistry(hkey:HKEY_LOCAL_MACHINE);
if (isnull(hklm))
{
  NetUseDel();
  audit(AUDIT_REG_FAIL);
}


# Make sure it's installed.
path = NULL;

key = "SOFTWARE\Netopia\netOctopus\Agent";
key_h = RegOpenKey(handle:hklm, key:key, mode:MAXIMUM_ALLOWED);
if (!isnull(key_h))
{
  value = RegQueryValue(handle:key_h, item:"AgentPath");
  if (!isnull(value)) path = value[1];
  RegCloseKey(handle:key_h);
}
RegCloseKey(handle:hklm);
if (isnull(path))
{
  NetUseDel();
  exit(0);
}


# Check if the affected file exists.
share = ereg_replace(pattern:"^([A-Za-z]):.*", replace:"\1$", string:path);
sys = ereg_replace(pattern:"^[A-Za-z]:(.*)", replace:"\1\nantsys.sys", string:path);
NetUseDel(close:FALSE);

rc = NetUseAdd(login:login, password:pass, domain:domain, share:share);
if (rc != 1)
{
  NetUseDel();
  audit(AUDIT_SHARE_FAIL,share);
}

fh = CreateFile(
  file:sys,
  desired_access:GENERIC_READ,
  file_attributes:FILE_ATTRIBUTE_NORMAL,
  share_mode:FILE_SHARE_READ,
  create_disposition:OPEN_EXISTING
);

# There's a problem if it does.
if (!isnull(fh))
{
  CloseFile(handle:fh);

  report = string(
    "\n",
    "The affected driver is installed as :\n",
    "\n",
    "  ", path, "\\nantsys.sys\n"
  );
  security_hole(port:port, extra:report);
}
NetUseDel();

Seebug

bulletinFamilyexploit
descriptionBUGTRAQ ID: 27175 CVE ID:CVE-2007-5761 CNCVE ID:CNCVE-20075761 Motorola netOctopus是一款资产管理工具。 Motorola netOctopus包含的驱动存在设计问题,本地攻击者可以利用漏洞提升特权。 netOctopus代理软件安装时包括nantsys.sys驱动,驱动输出的设备接口\\.\NantSys全用户可写。这个驱动包含读和写任意CPU MSRs,更改MSR值允许调节CPU的级别操作。通过修改SYSENTER_EIP_MSR,可导致以内核上下文执行任意指令。 Motorola netOctopus 5.1.2 build 1011 Motorola netOctopus 5.1.2 厂商解决方案 ----------- 可参考如下连接获得补丁信息: <a href=http://www.netopia.com/support/software/technotes/netoctopus/Removing_th target=_blank>http://www.netopia.com/support/software/technotes/netoctopus/Removing_th</a> e_nantsys_Driver.pdf <a href=http://www.netopia.com/support/software/technotes/netoctopus/removeNants target=_blank>http://www.netopia.com/support/software/technotes/netoctopus/removeNants</a> ys.vbs
idSSV:2788
last seen2017-11-19
modified2008-01-09
published2008-01-09
reporterRoot
titleMotorola netOctopus Agent 'nantsys.sys'本地特权提升漏洞