Vigil@nce - QEMU: out-of-bounds memory reading via snprintf
April 2020 by Vigil@nce
This bulletin was written by Vigil@nce : https://vigilance.fr/computer-vulne...
SYNTHESIS OF THE VULNERABILITY
Impacted products: Debian, QEMU, RHEL, Ubuntu.
Consequences: data reading, denial of service on service, denial of service on client.
Provenance: user shell.
Confidence: confirmed by the editor (5/5).
Creation date: 06/02/2020.
DESCRIPTION OF THE VULNERABILITY
An attacker can force a read at an invalid address via snprintf() of QEMU, in order to trigger a denial of service, or to obtain sensitive information.
ACCESS TO THE FULL VIGIL@NCE BULLETIN