Detections
Analytics
RHEL 6 / 7 : rhev-hypervisor7 (RHSA-2018:1711)
high Nessus Plugin ID 110113
Language:
Synopsis
The remote Red Hat host is missing one or more security updates for rhev-hypervisor7.Description
The remote Redhat Enterprise Linux 6 / 7 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2018:1711 advisory.The rhev-hypervisor7 package provides a Red Hat Enterprise Virtualization Hypervisor ISO disk image. The Red Hat Enterprise Virtualization Hypervisor is a dedicated Kernel-based Virtual Machine (KVM) hypervisor.
It includes everything necessary to run and manage virtual machines: A subset of the Red Hat Enterprise Linux operating environment and the Red Hat Enterprise Virtualization Agent.
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 rhev-hypervisor7 side of the CVE-2018-3639 mitigation.
Red Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project Zero) for reporting this issue.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the RHEL rhev-hypervisor7 package based on the guidance in RHSA-2018:1711.See Also
http://www.nessus.org/u?ae4b28d7
https://access.redhat.com/security/vulnerabilities/ssbd
https://bugzilla.redhat.com/show_bug.cgi?id=1566890
https://access.redhat.com/errata/RHSA-2018:1711
https://access.redhat.com/security/updates/classification/#important
Plugin Details
Severity: High
ID: 110113
File Name: redhat-RHSA-2018-1711.nasl
Version: 1.16
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 5/25/2018
Updated: 6/3/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Critical
Score: 9.5
Vendor
Vendor Severity: Important
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 6.3
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2018-8897
CVSS v3
Risk Factor: High
Base Score: 7.8
Temporal Score: 7.5
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:rhev-hypervisor7, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:7
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 5/23/2018
Vulnerability Publication Date: 5/8/2018
Exploitable With
Metasploit (Microsoft Windows POP/MOV SS Local Privilege Elevation Vulnerability)