Detections
Analytics
RHEL 6 / 7 : rhev-hypervisor7 (RHSA-2018:2404)
medium Nessus Plugin ID 112028
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-2018:2404 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):
* Modern operating systems implement virtualization of physical memory to efficiently use available system resources and provide inter-domain protection through access control and isolation. The L1TF issue was found in the way the x86 microprocessor designs have implemented speculative execution of instructions (a commonly used performance optimisation) in combination with handling of page-faults caused by terminated virtual to physical address resolving process. As a result, an unprivileged attacker could use this flaw to read privileged memory of the kernel or other processes and/or cross guest/host boundaries to read host memory by conducting targeted cache side-channel attacks. (CVE-2018-3620, CVE-2018-3646)
Red Hat would like to thank Intel OSSIRT (Intel.com) for reporting these issues.
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-2018:2404.See Also
https://bugzilla.redhat.com/show_bug.cgi?id=1614065
https://access.redhat.com/errata/RHSA-2018:2404
https://access.redhat.com/security/updates/classification/#important
http://www.nessus.org/u?cb4cc684
Plugin Details
Severity: Medium
ID: 112028
File Name: redhat-RHSA-2018-2404.nasl
Version: 1.11
Type: Local
Agent: unix
Family: Red Hat Local Security Checks
Published: 8/21/2018
Updated: 3/26/2025
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.2
Vendor
Vendor Severity: Important
CVSS v2
Risk Factor: Medium
Base Score: 4.7
Temporal Score: 3.5
Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:N/A:N
CVSS Score Source: CVE-2018-3646
CVSS v3
Risk Factor: Medium
Base Score: 5.6
Temporal Score: 4.9
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:rhev-hypervisor7
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 8/15/2018
Vulnerability Publication Date: 8/14/2018
Reference Information
CVE: CVE-2018-3620, CVE-2018-3646