Scientific Linux Security Update : qemu-kvm on SL7.x x86_64 (20170117)

high Nessus Plugin ID 96600
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

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

Description

Security Fix(es) :

- An out-of-bounds read-access flaw was found in the QEMU emulator built with IP checksum routines. The flaw could occur when computing a TCP/UDP packet's checksum, because a QEMU function used the packet's payload length without checking against the data buffer's size. A user inside a guest could use this flaw to crash the QEMU process (denial of service). (CVE-2016-2857)

Bug Fix(es) :

- Previously, rebooting a guest virtual machine more than 128 times in a short period of time caused the guest to shut down instead of rebooting, because the virtqueue was not cleaned properly. This update ensures that the virtqueue is cleaned more reliably, which prevents the described problem from occurring.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?c8c4b41a

Plugin Details

Severity: High

ID: 96600

File Name: sl_20170117_qemu_kvm_on_SL7_x.nasl

Version: 3.5

Type: local

Agent: unix

Published: 1/18/2017

Updated: 1/14/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 6.3

CVSS v2

Risk Factor: Low

Base Score: 3.6

Vector: AV:L/AC:L/Au:N/C:P/I:N/A:P

CVSS v3

Risk Factor: High

Base Score: 8.4

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

Vulnerability Information

CPE: p-cpe:/a:fermilab:scientific_linux:qemu-img, p-cpe:/a:fermilab:scientific_linux:qemu-kvm, p-cpe:/a:fermilab:scientific_linux:qemu-kvm-common, p-cpe:/a:fermilab:scientific_linux:qemu-kvm-debuginfo, p-cpe:/a:fermilab:scientific_linux:qemu-kvm-tools, x-cpe:/o:fermilab:scientific_linux

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

Patch Publication Date: 1/17/2017

Vulnerability Publication Date: 4/12/2016

Reference Information

CVE: CVE-2016-2857