SCSI command filtering
Posted Aug 3, 2006 13:38 UTC (Thu) by abatters
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In reply to: SCSI command filtering
Parent article: SCSI command filtering
> Presumably if you can rewrite the firmware, then with a bit of effort you can create some firmware which will use DMA to overwrite arbitrary sections of memory
Not really. SCSI devices are connected through HBAs (i.e. SCSI cards); the HBA has DMA access but the SCSI device itself does not. Rewriting the firmware of the SCSI device wouldn't grant arbirtary access to system memory; you would have to alter the firmware on the HBA or change the HBA driver to do that.
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