Re: iDefense Security Advisory 10.10.06: FreeBSD ptrace PT_LWPINFO Denial of Service Vulnerability

Bill Moran wrote:
Colin Percival <cperciva@xxxxxxxxxxx> wrote:
This is a local denial of service bug, which was fixed 6 weeks ago in HEAD
^^^^^^^^^^^^^^^^^^^^^^^^^^^
That was what I expected. Section III seems to hint that it could be
used by an unprivilidged user to crash or lock a system.

Yes. An unprivileged user who is able to execute code on an affected system
can cause a kernel panic. There are a variety of reasons for not treating
bugs like this as security issues; the strongest reason imho is that if one
of your users is making a system crash, you can disable his account and call
the police.

BTW, are you going to be at NYCBSDCon?

No -- I only go to conferences if I have a paper to present.

Colin Percival

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