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

high Nessus Plugin ID 93760

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.

Solution

Update the affected kvm packages.

See Also

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

Plugin Details

Severity: High

ID: 93760

File Name: oraclelinux_ELSA-2016-1943.nasl

Version: 2.7

Type: local

Agent: unix

Published: 9/28/2016

Updated: 1/14/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:2.3:o:oracle:linux:5:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kmod-kvm:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kvm:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kvm-qemu-img:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kvm-tools:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:kmod-kvm-debug:*:*:*:*:*:*:*

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Ease: No known exploits are available

Patch Publication Date: 9/27/2016

Vulnerability Publication Date: 5/11/2016

Reference Information

CVE: CVE-2016-3710, CVE-2016-5403

RHSA: 2016:1943