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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


- Linux kernel


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.


- Identifiers: CVE-2008-4395, VIGILANCE-VUL-8229
- Url:

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