Oracle Linux 5 : kvm (ELSA-2016-1943)

This script is Copyright (C) 2016 Tenable Network Security, Inc.


Synopsis :

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

Description :

From Red Hat Security Advisory 2016:1943 :

An update for kvm is now available for Red Hat Enterprise Linux 5.

Red Hat Product Security has rated this update as having a security
impact of Important. A Common Vulnerability Scoring System (CVSS) base
score, which gives a detailed severity rating, is available for each
vulnerability from the CVE link(s) in the References section.

KVM (for Kernel-based Virtual Machine) is a full virtualization
solution for Linux on x86 hardware. Using KVM, one can run multiple
virtual machines running unmodified Linux or Windows images. Each
virtual machine has private virtualized hardware: a network card,
disk, graphics adapter, etc.

Security Fix(es) :

* An out-of-bounds read/write access flaw was found in the way QEMU's
VGA emulation with VESA BIOS Extensions (VBE) support performed
read/write operations using I/O port methods. A privileged guest user
could use this flaw to execute arbitrary code on the host with the
privileges of the host's QEMU process. (CVE-2016-3710)

* Quick Emulator(QEMU) built with the virtio framework is vulnerable
to an unbounded memory allocation issue. It was found that a malicious
guest user could submit more requests than the virtqueue size permits.
Processing a request allocates a VirtQueueElement results in unbounded
memory allocation on the host controlled by the guest. (CVE-2016-5403)

Red Hat would like to thank Wei Xiao (360 Marvel Team) and Qinghao
Tang (360 Marvel Team) for reporting CVE-2016-3710 and hongzhenhao
(Marvel Team) for reporting CVE-2016-5403.

See also :

https://oss.oracle.com/pipermail/el-errata/2016-September/006370.html

Solution :

Update the affected kvm packages.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 5.3
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Oracle Linux Local Security Checks

Nessus Plugin ID: 93760 ()

Bugtraq ID:

CVE ID: CVE-2016-3710
CVE-2016-5403

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