OSEC

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Ralinktech wireless cards drivers vulnerability

springsecgmail.com
Date: Sun Jan 18 2009 - 05:12:03 CST


Some Ralinktech wireless cards drivers are suffer from integer overflow. by sending
malformed 802.11 Probe Request packet with no care about victim's MAC\BSS\SSID can cause to
remote code execution in kernel mode.

In order to exploit this issue, the attacker should send a Probe
Request packet with SSID length bigger then 128 bytes (but less then 256) when the victim's card is in ADHOC mode.
attacker shouldn't be on the same network nor even know the MAC\BSS\SSID, he can just send it broadcast.

Tested on Ralink USB wireless adapter (RT73) V3.08 on win2k with the latest driver version.
Status: Unpatched ,vulnerability reported to vendor.
Oses: Windows\linux drivers.

Have fun!
Aviv