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Secunia Advisory SA26003

Microsoft .NET Framework Multiple Vulnerabilities
Secunia Advisory SA26003
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Release Date 2007-07-10
Last Update 2008-03-26
   
Popularity 30,452 views
Comments 0 comments

Criticality level Moderately criticalModerately critical
Impact Exposure of system information
Exposure of sensitive information
System access
Where From remote
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Vendor Patch
   
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
Remediation status Secunia CSI, Secunia PSI
Automated scanning Secunia CSI, Secunia PSI
   
Software:
Microsoft .NET Framework 1.x
Microsoft .NET Framework 2.x

Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2007-0041 CVSS available in Customer Area
CVE-2007-0042 CVSS available in Customer Area
CVE-2007-0043 CVSS available in Customer Area
  

Description

Some vulnerabilities have been reported in Microsoft .NET Framework, which can be exploited by malicious people to disclose potentially sensitive information or compromise a user's system.

1) A boundary error in the PE Loader can be exploited to execute arbitrary code with permissions of the logged-on user when the user is tricked into visiting a malicious web page and performs certain actions.

This vulnerability does not affect the .NET Framework when installed on Windows Vista.

2) An error exists in ASP.NET when processing URLs containing NULL-bytes, which can be exploited to disclose potentially sensitive information by gaining unauthorised access to certain parts of a web site via specially crafted requests.

3) A boundary error in the Just In Time Compiler (JIT) can be exploited to execute arbitrary code with permissions of the logged-on user when the user is tricked into visiting a malicious web page and performs certain actions.

This vulnerability only affects .NET Framework 2.0 and does not affect the .NET Framework when installed on Windows Vista.


Solution
Apply patches.
Further details available in Customer Area

Provided and/or discovered by
1) The vendor credits Dinis Cruz, OWASP.
2) Paul Craig, Security-Assessment.com.
3) The vendor credits Jeroen Frijters, Sumatra.

Changelog
Further details available in Customer Area

Original Advisory
MS07-040 (KB931212):
http://www.microsoft.com/technet/security/Bulletin/MS07-040.mspx

Security-Assessment.com:
http://security-assessment.com/files/advisories/2007-07-11_Multiple_.NET_Null_Byte_Injection_Vulnerabilities.pdf

Deep Links
Links available in Customer Area


Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Microsoft .NET Framework Multiple Vulnerabilities
 
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