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RHEL 8.2 Security Advisory RHSA-2021:0743-01 Addresses Critical QEMU Issue

red hat
Calendar Grey March 8, 2021
Dist Redhat Esm H88
Crucial notification regarding QEMU device interface weaknesses on RHEL 8.2.1 components, classified as critical by Red Hat.
An update for the virt:8.2 and virt-devel:8.2 modules is now available for Advanced Virtualization for RHEL 8.2.1

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Summary

The Advanced Virtualization module provides the user-space component for running virtual machines that use KVM in environments managed by Red Hat products.
Security Fix(es):
* QEMU: virtiofsd: potential privileged host device access from guest (CVE-2020-35517)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Topics%20covered

Topics Covered

security advisory update critical RHEL virtualization QEMU advanced virtualization guest device access QEMU access guest device

References

https://access.redhat.com/security/cve/CVE-2020-35517 https://access.redhat.com/security/updates/classification/#important

Package List

Advanced Virtualization for RHEL 8.2.1:
Source: SLOF-20191022-3.git899d9883.module+el8.2.0+5449+efc036dd.src.rpm hivex-1.3.18-20.module+el8.2.0+5588+63a201c3.src.rpm libguestfs-1.40.2-24.module+el8.2.1+7154+47ffd890.src.rpm libguestfs-winsupport-8.2-1.module+el8.2.0+5590+82cd80df.src.rpm libiscsi-1.18.0-8.module+el8.2.0+4793+b09dd2fb.src.rpm libnbd-1.2.2-1.module+el8.2.0+5644+32ac38d4.src.rpm libtpms-0.7.0-1.20191018gitdc116933b7.module+el8.2.0+4793+b09dd2fb.src.rpm libvirt-6.0.0-25.5.module+el8.2.1+8680+ea98947b.src.rpm libvirt-dbus-1.3.0-2.module+el8.2.0+4793+b09dd2fb.src.rpm libvirt-python-6.0.0-1.module+el8.2.0+5453+31b2b136.src.rpm nbdkit-1.16.2-4.module+el8.2.1+6710+effcb1df.src.rpm netcf-0.2.8-12.module+el8.2.0+4793+b09dd2fb.src.rpm perl-Sys-Virt-6.0.0-1.module+el8.2.0+5488+267def79.src.rpm python-pyvmomi-6.7.1-7.module+el8.2.0+4793+b09dd2fb.src.rpm qemu-kvm-4.2.0-29.module+el8.2.1+9917+2543143c.7.src.rpm seabios-1.13.0-2.module+el8.2.1+7284+aa32a2c4.src.rpm sgabios-0.20170427git-3.module+el8.2.0+4793+b09dd2fb.src.rpm supermin-5.1.19-10.module+el8.2.0+4793+b09dd2fb.src.rpm swtpm-0.2.0-2.20200127gitff5a83b.module+el8.2.0+5579+d71178e0.src.rpm virglrenderer-0.8.2-1.module+el8.2.0+5777+d9c2af8c.src.rpm
aarch64:

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:0743-01
Product: Advanced Virtualization
Advisory URL: Issue date: 2021-03-08

Topic

An update for the virt:8.2 and virt-devel:8.2 modules is now available forAdvanced Virtualization for RHEL 8.2.1.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory update critical RHEL virtualization QEMU advanced virtualization guest device access QEMU access guest device

Relevant Releases Architectures

Advanced Virtualization CodeReady Builder for RHEL 8.2.1 - aarch64, ppc64le, s390x, x86_64

Advanced Virtualization for RHEL 8.2.1 - aarch64, noarch, ppc64le, s390x, x86_64

Bugs Fixed

1915823 - CVE-2020-35517 QEMU: virtiofsd: potential privileged host device access from guest

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