Date Discovered July 10, 2012
Description Microsoft Windows is prone to an information disclosure vulnerability that occurs because of a design error in the TLS protocol when the cipher-block chaining (CBC) mode of operation is used.
An attacker can exploit this issue to gain access to sensitive information that may aid in further attacks.
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.
Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity including unexplained incoming and outgoing traffic. This may indicate exploit attempts or activity that results from successful exploits.
Updates are available. Please see the references for more information.
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