Scientific Linux Security Update : qemu-kvm on SL6.x i386/x86_64

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


Synopsis :

The remote Scientific Linux host is missing one or more security
updates.

Description :

Security Fix(es) :

- A heap buffer overflow flaw was found in QEMU's Cirrus
CLGD 54xx VGA emulator's VNC display driver support; the
issue could occur when a VNC client attempted to update
its display after a VGA operation is performed by a
guest. A privileged user/process inside a guest could
use this flaw to crash the QEMU process or, potentially,
execute arbitrary code on the host with privileges of
the QEMU process. (CVE-2016-9603)

- An out-of-bounds r/w access issue was found in QEMU's
Cirrus CLGD 54xx VGA Emulator support. The vulnerability
could occur while copying VGA data via various bitblt
functions. A privileged user inside a guest could use
this flaw to crash the QEMU process or, potentially,
execute arbitrary code on the host with privileges of
the QEMU process. (CVE-2017-7980)

- An out-of-bounds memory access issue was found in QEMU's
VNC display driver support. The vulnerability could
occur while refreshing the VNC display surface area in
the 'vnc_refresh_server_surface'. A user/process inside
a guest could use this flaw to crash the QEMU process,
resulting in a denial of service. (CVE-2017-2633)

- An out-of-bounds access issue was found in QEMU's Cirrus
CLGD 54xx VGA Emulator support. The vulnerability could
occur while copying VGA data using bitblt functions (for
example, cirrus_bitblt_rop_fwd_transp_). A privileged
user inside a guest could use this flaw to crash the
QEMU process, resulting in denial of service.
(CVE-2017-7718)

See also :

http://www.nessus.org/u?486e56e5

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 4.6
(CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P)

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 100097 ()

Bugtraq ID:

CVE ID: CVE-2016-9603
CVE-2017-2633
CVE-2017-7718
CVE-2017-7980

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