ProbeForRead

MS08-066 : Catching and fixing a ProbeForRead / ProbeForWrite bypass

The driver afd.sys is responsible for handling socket connections.  MS08-066 addresses several vulnerabilities in afd.sys that could allow an attacker to execute arbitrary code in kernel mode. These vulnerabilities can only be exploited locally and there is no remote vector from our investigations. One of these vulnerabilities involves a ProbeForRead / ProbeForWrite bypass when using …

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MS08-061 : The case of the kernel mode double-fetch

MS08-061 addresses several vulnerabilities in win32k.sys where you can execute arbitrary code in kernel mode. These bugs can only be exploited locally and there is no remote vector based on our investigation of the vulnerability. One of these vulnerabilities involves multiple kernel mode accesses of user mode data leading to an interesting race condition.  When …

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