||Windows Firewall in tcpip.sys in Microsoft Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly enforce firewall rules for outbound broadcast packets, which allows remote attackers to obtain potentially sensitive information by observing broadcast traffic on a local network, aka "Windows Firewall Bypass Vulnerability."
Microsoft Windows 7
Microsoft Windows 7 64-bit Service Pack 1 (initial release)
Microsoft Windows 7 x86 Service Pack 1
Microsoft Windows Server 2008 Service Pack 2
Microsoft Windows Server 2008 R2
Microsoft Windows Server 2008 R2 Service Pack 1
Microsoft Windows Vista Service Pack 2
|Base: ||1.7 (as of 09-05-2012 - 12:39)|
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 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.
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.
Manipulating Input to File System Calls
An attacker manipulates inputs to the target software which the target software passes to file system calls in the OS. The goal is to gain access to, and perhaps modify, areas of the file system that the target software did not intend to be accessible.
|impact||Elevation of Privilege |
|title||Vulnerability in TCP/IP Could Allow Elevation of Privilege |
|NASL family||Windows : Microsoft Bulletins |
|NASL id||SMB_NT_MS12-032.NASL |
|description||The remote Windows host is affected by multiple elevation of privilege vulnerabilities :
- A flaw in the way outbound broadcast packets are handled could be utilized by an attacker to bypass the Windows Firewall defense-in-depth mechanism. (CVE-2012-0174)
- The TCP/IP stack is susceptible to an elevation of privilege vulnerability that is caused when the Windows TCP/IP stack fails to properly handle the binding of IPv6 addresses. Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code with administrator privileges.
|last seen||2019-02-21 |
|plugin id||59040 |
|title||MS12-032: Vulnerability in TCP/IP Could Allow Elevation of Privilege (2688338) |
|name||Josh Turpin |
|organization||Symantec Corporation |
|comment||Microsoft Windows Vista (32-bit) Service Pack 2 is installed |
|comment||Microsoft Windows Vista x64 Edition Service Pack 2 is installed |
|comment||Microsoft Windows Server 2008 (32-bit) Service Pack 2 is installed |
|comment||Microsoft Windows Server 2008 x64 Edition Service Pack 2 is installed |
|comment||Microsoft Windows Server 2008 Itanium-Based Edition Service Pack 2 is installed |
|comment||Microsoft Windows 7 (32-bit) is installed |
|comment||Microsoft Windows 7 x64 Edition is installed |
|comment||Microsoft Windows Server 2008 R2 x64 Edition is installed |
|comment||Microsoft Windows Server 2008 R2 Itanium-Based Edition is installed |
|comment||Microsoft Windows 7 (32-bit) Service Pack 1 is installed |
|comment||Microsoft Windows 7 x64 Service Pack 1 is installed |
|comment||Microsoft Windows Server 2008 R2 x64 Service Pack 1 is installed |
|comment||Microsoft Windows Server 2008 R2 Itanium-Based Edition Service Pack 1 is installed |
|description||Windows Firewall in tcpip.sys in Microsoft Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly enforce firewall rules for outbound broadcast packets, which allows remote attackers to obtain potentially sensitive information by observing broadcast traffic on a local network, aka "Windows Firewall Bypass Vulnerability." |
|title||Windows Firewall Bypass Vulnerability |
|Last major update
||29-01-2013 - 23:46
||08-05-2012 - 20:55
||12-10-2018 - 18:02