full-disclosure - wireless sniffing question

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From: blancher at cartel-securite.fr (Cedric Blancher)
Subject: wireless sniffing question

Le samedi 04 d?cembre 2004 ? 03:09 -0500, question question a ?crit :
> Lets say I have a Linksys (or whichever brand you like) wireless
> router with a wireless host using 128 bit WEP encryption, and a wired
> host connected to the same device.  Obviously it is possible for the
> wired box to do various arp attacks on the switch to view other wired
> hosts traffic. But does the same apply for the wireless host?

Yes, most probably.
Most WiFi routeurs act as a bridge between internal wired network and
wireless network. The routeur part occurs between internal network (WiFi
+LAN) and WAN port. Thus, ARP attacks can occurs between the two
networks, meaning a wireless station can attack a wired one and
vice-versa.

> Can the wired host trick the switch on the Linksys into forwarding the
> wireless clients packets to him via the regular wire?

As shown above, definitly yes.
Then it can deploy cleartext attacks against WEP, as an example...


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