Check Point Advisories

Preemptive Protection against SSL and TLS Protocols Information Disclosure (MS12-006; CVE-2011-3389)

Check Point Reference: CPAI-2012-020
Date Published: 10 Jan 2012
Severity: High
Last Updated: Sunday 01 January, 2012
Source: CVE-2011-3389
Protection Provided by:
Who is Vulnerable? Windows XP Service Pack 3
Windows XP Professional x64 Edition Service Pack 2
Windows Server 2003 Service Pack 2
Windows Server 2003 x64 Edition Service Pack 2
Windows Server 2003 with SP2 for Itanium-based Systems
Windows Vista Service Pack 2
Windows Vista x64 Edition Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for Itanium-based Systems Service Pack 2
Windows 7 for 32-bit Systems
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems
Windows 7 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for Itanium-based Systems
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
Vulnerability Description An information disclosure vulnerability has been reported in SSL 3.0 and TLS 1.0 encryption protocols.
Vulnerability DetailsThe vulnerability is caused due to a design flaw in the SSL and TLS protocols when Cipher-block chaining (CBC) mode of operation is used. The vulnerability affects the protocol itself and is not specific to the Windows operating system. Remote attackers may exploit this issue by rapidly sending a large number of SSL and TLS requests to the server. Successful exploitation could allow an attacker to decrypt portions of encrypted web traffic, resulting in the disclosure of sensitive information.

Protection Overview

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