Microsoft .NET Framework Function Pointer Execution Remote Code Execution Vulnerability

2012-06-12T00:00:00
ID SMNTC-53861
Type symantec
Reporter Symantec Security Response
Modified 2012-06-12T00:00:00

Description

Description

Microsoft .NET Framework is prone to a remote code-execution vulnerability. Successful exploits will allow an attacker to execute arbitrary code within the context of the affected application. Failed exploit attempts will likely result in a denial-of-service condition. http://technet.microsoft.com/en-us/security/advisory/2718704

Technologies Affected

  • Microsoft .NET Framework 2.0 SP1
  • Microsoft .NET Framework 2.0 SP2
  • Microsoft .NET Framework 3.5.1
  • Microsoft .NET Framework 4.0

Recommendations

Block external access at the network boundary, unless external parties require service.
If global access isn't needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of successful exploits.

Run all software as a nonprivileged user with minimal access rights.
To reduce the impact of latent vulnerabilities, always run nonadministrative software as an unprivileged user with minimal access rights.

Do not follow links provided by unknown or untrusted sources.
Attackers could exploit this vulnerability by enticing a user to visit a malicious website. Do not follow links provided by sources of questionable integrity.

Set web browser security to disable the execution of script code or active content.
Disable support for script code and active content within a client browser to reduce the chances of a successful exploit. Note that this mitigation tactic might adversely affect legitimate websites that rely on the execution of browser-based script code.

Implement multiple redundant layers of security.
Since this issue may be leveraged to execute code, we recommend memory-protection schemes, such as nonexecutable stack/heap configurations and randomly mapped memory segments. This tactic may complicate exploits of memory-corruption vulnerabilities.

Vendor updates are available. Please see the references for more information.