Microsoft finds privilege escalation vulnerability in Huawei driver

Re:Microsoft finds privilege escalation vulnerability in Hua... by stefan_ on Thursday April 04, 2019 @02:38PM (#19575681)

> I see nothing about how this driver doesn't have any other functions.

Obviously, you didn't look at it.

This is the irony of it all. There is nothing simple about writing a device driver to do what literally three lines of code in userland registering a service could have achieved. It is the furthest thing from a rushed design you could possibly do; it is taking the wrong turn 10 times and incurring exponential costs each time. That is why it's called a backdoor or malicious; it demonstrates unique niche knowledge in things that are the furthest imaginable distance from the shitty .NET amalgamation that their actual PC manager software is.

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Re:Microsoft finds privilege escalation vulnerability in Hua... by monocasa on Thursday April 04, 2019 @02:49PM (#19575787)

Quote the piece of the article that says that the driver has no other functions.

Particularly given that they describe how there's multiple ioctls.

And I can tell you from experience that relying on the service manager for a full watchdog solution is fraught with peril. It'll catch hard crashes, but not for instance dead locks.

[ Parent | on HN ]