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Security

Submission + - XP/Vista IGMP buffer overflow - the code explained (zynamics.com)

HalvarFlake writes: "With all the hoopla about the remotely exploitable, kernel-level buffer overflow discussed in today's security bulletin MS08-0001, what is the actual bug that triggers this ?
The bulletin doesn't give all that much information ...
This shockwave movie goes through the process of examining the "pre-patch" version of tcpip.sys and comparing it against the "post-patch" version of tcpip.sys. This comparison yields the actual code that causes the overflow: A mistake in the calculation of the required size in a dynamic allocation."

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