Re: [PATCH] Check files' signatures before doing suid/sgid [2/4]

[Alexander Wuerstlein]

On 070621 19:21, Arjan van de Ven <arjan@xxxxxxxxxxxxx> wrote:
> On Thu, 2007-06-21 at 18:02 +0200, Alexander Wuerstlein wrote:
> > Modified task_struct to hold a 'signed flag' which is set on exec(), inherited
> > on fork() and checked during exec before giving the new process suid/sgid
> > privileges.
> > 
> 
> 
> 
> do you also check the signature of glibc and every other shared library
> that the app uses (or dlopens)? if not.. the entire exercise is rather
> pointless...

We do check that, that is patch [3/4].

Of course we can only check mmap-ed files, if there is no file like with JIT
compilers we are out of luck.


Ciao,

Alexander Wuerstlein.
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