FreeBSD : xen-tools -- oob access in cirrus bitblt copy (a73aba9a-effe-11e6-ae1b-002590263bf5)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote FreeBSD host is missing a security-related update.

Description :

The Xen Project reports :

When doing bitblt copy backwards, qemu should negate the blit width.
This avoids an oob access before the start of video memory.

A malicious guest administrator can cause an out of bounds memory
access, possibly leading to information disclosure or privilege
escalation.

See also :

http://xenbits.xen.org/xsa/advisory-208.html
http://www.nessus.org/u?a1eb0878

Solution :

Update the affected package.

Risk factor :

High

Family: FreeBSD Local Security Checks

Nessus Plugin ID: 97109 ()

Bugtraq ID:

CVE ID: CVE-2017-2615

Ready to Amp Up Your Nessus Experience?

Get Nessus Professional to scan unlimited IPs, run compliance checks & more

Buy Nessus Professional Now