Actu
Vigil@nce - QEMU: out-of-bounds memory reading via vmsvga_fifo_read_raw
June 2016 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/offer
SYNTHESIS OF THE VULNERABILITY
An attacker can force a read at an invalid address via
vmsvga_fifo_read_raw() of QEMU, in order to trigger a denial of
service, or to obtain sensitive information.
– Impacted products: QEMU.
– Severity: 1/4.
– Creation date: 31/05/2016.
DESCRIPTION OF THE VULNERABILITY
The QEMU product can be compiled with the VMware-SVGA support.
However, the vmsvga_fifo_read_raw() function tries to read a
memory area located outside the expected range, which triggers a
fatal error, or leads to the disclosure of a memory fragment.
An attacker can therefore force a read at an invalid address via
vmsvga_fifo_read_raw() of QEMU, in order to trigger a denial of
service, or to obtain sensitive information.
ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN
https://vigilance.fr/vulnerability/QEMU-out-of-bounds-memory-reading-via-vmsvga-fifo-read-raw-19734
