Freely subscribe to our NEWSLETTER

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

SYNTHESIS OF THE VULNERABILITY

Impacted products: QEMU, Ubuntu.

Severity: 2/4.

Consequences: administrator access/rights, privileged
access/rights, user access/rights, denial of service on server,
denial of service on service, denial of service on client.

Provenance: user shell.

Confidence: confirmed by the editor (5/5).

Creation date: 20/11/2018.

DESCRIPTION OF THE VULNERABILITY

An attacker, inside a guest system, can force the usage of a freed
memory area via v9fs_path_copy() of QEMU, in order to trigger a
denial of service, and possibly to run code on the host system.

ACCESS TO THE COMPLETE VIGIL@NCE BULLETIN

https://vigilance.fr/vulnerability/QEMU-use-after-free-via-v9fs-path-copy-27833