Check Point Advisories

Microsoft ASP.NET PKCS Padding Information Disclosure (MS10-070; CVE-2010-3332)

Check Point Reference: CPAI-2012-1137
Date Published: 23 Dec 2012
Severity: Critical
Last Updated: Sunday 23 December, 2012
Source:
Industry Reference:CVE-2010-3332
Protection Provided by:

Security Gateway
R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description An information disclosure vulnerability has been reported in ASP.NET. This vulnerability is caused by ASP.NET providing web clients details in error messages when decrypting certain ciphertext. Successful exploitation of this vulnerability could allow the attacker to read and tamper with data. If tampered with, the attacker could send this data back to the server and observe the error codes returned by the server. By observing these error codes, an attacker could gain enough information to decrypt and tamper with the encrypted data.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability.

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

  1. In the IPS tab, click Protections and find the Microsoft ASP.NET PKCS Padding Information Disclosure (MS10-070) protection using the Search tool and Edit the protection's settings.
  2. Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name:  Web Server Enforcement Violation.
Attack Information:  Microsoft ASP.NET PKCS padding information disclosure (MS10-070)

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