Vigil@nce: NDISWrapper, buffer overflows
November 2008 by Vigil@nce
A WiFi attacker can create several overflows in NDISWrapper in
order to execute code on the system.
– Gravity: 2/4
– Consequences: administrator access/rights
– Provenance: radio connection
– Means of attack: no proof of concept, no attack
– Ability of attacker: expert (4/4)
– Confidence: confirmed by the editor (5/5)
– Diffusion of the vulnerable configuration: high (3/3)
– Creation date: 07/11/2008
IMPACTED PRODUCTS
– Linux kernel
DESCRIPTION
The NDISWrapper tool is used to install Windows network drivers on
Linux.
When NDISWrapper is used with a WiFi card, it copies the ESSID
(the network name) in arrays of fixed size with the memcpy() or
sprintf() functions. A buffer overflow thus occurs.
An attacker can therefore send a long ESSID via the WiFi network
in order to execute code in the Linux kernel.
CHARACTERISTICS
– Identifiers: CVE-2008-4395, VIGILANCE-VUL-8229
– Url: http://vigilance.fr/vulnerability/8229