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Re: [bug #28446] No checks are made for unteminated strings in RPC messa


From: olafBuddenhagen
Subject: Re: [bug #28446] No checks are made for unteminated strings in RPC messages
Date: Thu, 31 Dec 2009 04:12:21 +0100
User-agent: Mutt/1.5.19 (2009-01-05)

Hi,

On Wed, Dec 30, 2009 at 07:42:21PM +0000, Carl Fredrik Hammar wrote:

> Strings in RPCs, such as the filename argument to a dir_lookup, are
> not checked if they are terminated by '\0'.  This could lead to the
> server segfaulting if it tries to read the string.
> 
> Making MIG check that strings are terminated seems like the proper
> fix.

AIUI, the first step would be implementing actual string support in MiG
at all...

While this should probably be considered a todo item, in the present
situation, if a server doesn't protect against non-terminated strings,
it's a bug *in this server*. If you see any actual instances of this,
could you report them?...

-antrik-




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