The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2018:2060 advisory.

    KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of     architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines     that use KVM in environments managed by Red Hat products.

    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)

    Red Hat would like to thank Ken Johnson (Microsoft Security Response Center) and Jann Horn (Google Project     Zero) for reporting this issue.

    Note: This is the qemu-kvm-rhev side of the CVE-2018-3639 mitigation that includes support for guests     running on hosts with AMD processors.

    Bug Fix(es):

    * Previously, using device passthrough for a SCSI-2 device failed and returned an Illegal Request error.
    With this update, the QEMU emulator checks the SCSI version of the device when performing passthrough. As     a result, the described problem no longer occurs. (BZ#1571370)

    * Under certain circumstances, resuming a paused guest generated redundant VIR_DOMAIN_PAUSED_UNKNOWN     error messages in the libvirt log. This update corrects the event sending order when resuming guests,     which prevents the errors being logged. (BZ#1582122)

    Enhancement(s):

    * With this update, Ceph storage is supported by KVM virtualization on all CPU architectures supported by     Red Hat. (BZ#1588001)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Detections

Analytics

RHEL 7 : qemu-kvm-rhev (RHSA-2018:2060)

medium Nessus Plugin ID 110795

Version 1.14

Version 1.13

Version 1.14 Jun 3, 2024, 4:41 PM Detection (updated detection logic) Plugin metadata Plugin Feed: 202406031641
Version 1.13 Apr 28, 2024, 2:25 PM CVSSv2 score source (set to "CVE-2018-3639") Detection (updated detection logic) Plugin metadata Reference Plugin Feed: 202404281425