Re: F15 - status of /run/user, /dev/shm, and potential for a DoS attack

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Hi

2011/5/18 JB <jb.1234abcd@xxxxxxxxx>:
> Hi,
>
> There are threads on this list and a Bugzilla report filed.
>
> Can somebody explain what is the current status of it with regard to F15
> release declared ready ?
>
> The problem affects /run/user/ and /dev/shm.
> As I understand they are a DoS capable attack venues.
> There are separate temporary remedies offered for both problems, but they are
> up to users themselves to apply.

You can mount another tmpfs in /run/user/ to reduce the scale of
potential DoS on /run directory.

There is no effective way to prevent /dev/shm DoS - so I asked about
adding quota support for tmpfs - which will help to resolve these
problems.

>
> Was that considered to be a blocker and a part of release criteria for F15 ?

I never claimed that it should be.

>
> As the problem is known in advance, will it be part of an official release
> announcement and Fedora documentation, describing it and how the users can
> protect their machines thru a temporary remedy ?
>
> JB
>
>
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-- 
Best regards,
Michal

http://eventhorizon.pl/
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