[Cm-milano] [Fwd: [hackmeeting] [mariocartia@email.it: Re: […

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Autor: oggei
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Betreff: [Cm-milano] [Fwd: [hackmeeting] [mariocartia@email.it: Re: [lug-sr] Mandrake 9.2 guasta lettori cd-rom lg]]
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tra un flame e l'altro, questa segnalazione mi pare non banale, e da
fonti attendibili, ciao.

- -------- Original Message --------
Subject: [hackmeeting] [Re: [lug-sr] Mandrake 9.2 guasta lettori cd-rom lg]
Date: Tue, 4 Nov 2003 14:16:19 +0000
From: asbesto

- ----- Forwarded message from Mario Cartia <mariocartia@???> -----

To: SR LUG <lug-sr@???>
From: Mario C
Date: Tue, 04 Nov 2003 15:01:49 +0100
Subject: Re: [lug-sr] Mandrake 9.2 guasta lettori cd-rom lg

On Tue, 2003-11-04 at 13:39, lookee wrote:
| Scrive Riccardo <cotemal@...>:

|
| > Ragazzi anche io ho sentito parlare di ciò, ma se prima era solo una
| > voce non confermata, oggi si può star certi che la nuova distribuzione
| > Linux Mandrake 9.2 è in grado di danneggiare irreparabilmente alcuni
| > tipi di CD-Rom della LG Electronics.

|
| Effettivamente questo e' un problema GRAVE ma e' evidente che anche LG
| Electronics NON dovrebbe permettere al software di danneggiare
| irreparabilmente il suo hardware! Un malefico sviluppatore di worm

potrebbe
| sfruttare questo bug hardware per danneggiare irreparabilmente tutti i

lettori
| cd di questa marca.

dal sito di mandrake:
- ----------------------
The problem was that the kernel would send a FLUSH_CACHE command to the
LG CD-ROM drive which would make the drive inoperable by overwriting its
firmware. This is because some LG CD-ROM drives are not compliant with
the ATAPI specification. The specification does not require an
implementation of the FLUSH_CACHE command in the driver, and returning
an error (or doing nothing) would have been the correct behaviour for
the drive. Likewise, reusing a command is against the specification and
LG has reused the FLUSH_CACHE command to modify the firmware of the
drive, but they are unwilling to disclose exactly what the command does.
This FLUSH_CACHE command is supposed to be supported only by CD-RW or
DVD-RW devices; the LG-based CD-ROM devices are understanding this
command as the UPLOAD_FIRMWARE command.
- ----------------------
effettivamente è colpa degli sviluppatori LG che non seguono gli
standard...
- ----- End forwarded message -----

- --
[asbesto : freaknet medialab : radio#cybernet : GPG key on keyservers]
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ciao.

- --
oggei
gpg --keyserver keys.indymedia.org --recv-keys eebb4d0d

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