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Vigil@nce - QEMU: buffer overflow of mipsnet_receive

June 2016 by Vigil@nce

This bulletin was written by Vigil@nce : https://vigilance.fr/offer

SYNTHESIS OF THE VULNERABILITY

A remote attacker can send large packets to generate a buffer
overflow in the MIPSnet driver of QEMU, in order to trigger a
denial of service, and possibly to run code.

 Impacted products: Fedora, QEMU, Ubuntu.
 Severity: 2/4.
 Creation date: 12/04/2016.

DESCRIPTION OF THE VULNERABILITY

The QEMU product offers a network device compatible with MIPSnet.

However, if the size of received packets is superior to 1514 bytes
(with Large MTU), an overflow occurs in the mipsnet_receive()
function.

A remote attacker can therefore send large packets to generate a
buffer overflow in the MIPSnet driver of QEMU, in order to trigger
a denial of service, and possibly to run code.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/QEMU-buffer-overflow-of-mipsnet-receive-19341


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