Scientific Linux Security Update : libvirt on SL7.x x86_64 (Spectre)

Medium Nessus Plugin ID 110027

Synopsis

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

Description

Security Fix(es) :

- An industry-wide issue was found in the way many modern microprocessor designs have implemented speculative execution of Load & Store instructions (a commonly used performance optimization). It relies on the presence of a precisely-defined instruction sequence in the privileged code as well as the fact that memory read from address to which a recent memory write has occurred may see an older value and subsequently cause an update into the microprocessor's data cache even for speculatively executed instructions that never actually commit (retire). As a result, an unprivileged attacker could use this flaw to read privileged memory by conducting targeted cache side-channel attacks.
(CVE-2018-3639)

Note: This is the libvirt side of the CVE-2018-3639 mitigation.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?e7ea8f7c

Plugin Details

Severity: Medium

ID: 110027

File Name: sl_20180522_libvirt_on_SL7_x.nasl

Version: 1.8

Type: local

Agent: unix

Published: 2018/05/23

Updated: 2019/04/05

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.9

Temporal Score: 3.8

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

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

CVSS v3.0

Base Score: 5.5

Temporal Score: 5

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

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

Vulnerability Information

CPE: x-cpe:/o:fermilab:scientific_linux

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2018/05/22

Reference Information

CVE: CVE-2018-3639