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possibly failed cottonmouth attack on Amilo Xi2550 notebook



Dear Debian-Security,

   Is anyone of you interested in a notebook running Debian that has possibly (unsuccessfully) been infected by CottonMouth or by a similar technology?
When I changed the mainboard of my Amilo Xi2550 last summer because of an alledged issue with the power supply (in deed just the accumulator needed
to be changed) some strange computational errors that were reproducible before (see: http://bugs.mysql.com/bug.php?id=73231) had suddenly been gone.
Additionally the boot loader needed to be reinstalled because the notebook did not boot after replacing the mainboard. These two symptoms are actually
already hard to explain because on a hardware failure either the whole machine will crash or the erros will not be reproducible (in case of a RAM parity error).
If anyone is interested I should also be able to provide photos from the mainboard before and after the exchange last summer.
  Now to the worst the machine always being kept offline is throwing unexplainable errors at the two USB ports directly on the main board. The errors have
suddenly arised after I have returned from holiday and were never ever seen before. For a discussion and analysis of this issue you may turn to
https://bugzilla.kernel.org/show_bug.cgi?id=95141. I would consider it somewhat improbable that the two usb ports have both at the same time started to
fail without any influence from outside.
  The reason why I suspect that this board could have been attacked physically is that it was already attacked by several software rootkits as detected by
debcheckroot or file-wise comparison of an old and new installation of the same version of Debian from the exactly same unaltered source BD-DL in
times when the machine had still been online.
 
Yours Sincerely,
Elmar Stellnberger

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