Re: [ic] Security Problem in Interchange

[Grant <suppressed>]

--- Jon Jensen <suppressed> wrote:
> On Mon, 29 Mar 2004, Barry Treahy, Jr. wrote:
> 
> > >All versions of Interchange (4.8.x, 5.0.x, 5.1.x)
> contain a security hole
> > >which allows an attacker to expose arbitrary
> variable contents by using
> > >an URL like
> http://shop.example.com/cgi-bin/store/__SQLUSER__. 
> > >
> > >All Interchange applications using the standard
> "missing" special page
> > >from the demo catalog or a similar one are
> vulnerable to this attack.
> > >The attacker may learn the SQL access information
> for your Interchange
> > >application and use this information to read and
> manipulate sensitive
> > >data. 
> > >
> > >Attached are patches for the following
> Interchange versions:
> > >
> > >4.8.x:     Page-4.8.diff
> > >  
> > >
> > I manually applied this patch to the 4.8.6 system
> I have running,
> > restarted IC, flushed my browser cache and still
> seeing the same
> > results...  any thoughts?
> 
> I believe this is because earlier versions of 4.8.x
> had a missing.html
> that used [tmp]...[/tmp] to set the page name, which
> causes 
> reinterpolation of the variable. That was changed
> for 4.8.8 in December.
> 
> The safest thing to do is remove all
> @@MV_PREV_PAGE@@ and [subject] from 
> your missing.html, especially if you're using an
> older version of IC and 
> may not have applied other security patches before
> this one.
> 
> Jon

So I am safe without the patch if I don't use
@@MV_PREV_PAGE@@ and [subject] at all?

- Grant

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