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RedHat 8 Security Advisory RHSA-2021-0711: QEMU Access Vulnerability

red hat
Calendar Grey March 3, 2021
Dist Redhat Esm H88
Resolve critical QEMU guest interaction problem impacting Oracle Linux through this enhancement of virt:oracle and virt-tools packages.
An update for the virt:rhel and virt-devel:rhel modules is now available for Red Hat Enterprise Linux 8

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

Kernel-based Virtual Machine (KVM) offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide user-space components used to run virtual machines using KVM. The packages also provide APIs for managing and interacting with the virtualized systems.
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 red hat important virtualization important severity privileged access qemu virt module guest access

References

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

Package List

Red Hat Enterprise Linux AppStream (v. 8):
Source: SLOF-20191022-3.git899d9883.module+el8.3.0+6423+e4cb6418.src.rpm hivex-1.3.18-20.module+el8.3.0+6423+e4cb6418.src.rpm libguestfs-1.40.2-25.module+el8.3.0+7421+642fe24f.src.rpm libguestfs-winsupport-8.2-1.module+el8.3.0+6423+e4cb6418.src.rpm libiscsi-1.18.0-8.module+el8.1.0+4066+0f1aadab.src.rpm libnbd-1.2.2-1.module+el8.3.0+7353+9de0a3cc.src.rpm libvirt-6.0.0-28.module+el8.3.0+7827+5e65edd7.src.rpm libvirt-dbus-1.3.0-2.module+el8.3.0+6423+e4cb6418.src.rpm libvirt-python-6.0.0-1.module+el8.3.0+6423+e4cb6418.src.rpm nbdkit-1.16.2-4.module+el8.3.0+6922+fd575af8.src.rpm netcf-0.2.8-12.module+el8.1.0+4066+0f1aadab.src.rpm perl-Sys-Virt-6.0.0-1.module+el8.3.0+6423+e4cb6418.src.rpm qemu-kvm-4.2.0-34.module+el8.3.0+9903+ca3e42fb.4.src.rpm seabios-1.13.0-2.module+el8.3.0+7353+9de0a3cc.src.rpm sgabios-0.20170427git-3.module+el8.1.0+4066+0f1aadab.src.rpm supermin-5.1.19-10.module+el8.3.0+6423+e4cb6418.src.rpm
aarch64: hivex-1.3.18-20.module+el8.3.0+6423+e4cb6418.aarch64.rpm hivex-debuginfo-1.3.18-20.module+el8.3.0+6423+e4cb6418.aarch64.rpm hivex-debugsource-1.3.18-20.module+el8.3.0+6423+e4cb6418.aarch64.rpm hivex-devel-1.3.18-20.module+el8.3.0+6423+e4cb6418.aarch64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:0711-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2021:0711
Issue date: 2021-03-03

Topic

An update for the virt:rhel and virt-devel:rhel modules is now availablefor Red Hat Enterprise Linux 8.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 red hat important virtualization important severity privileged access qemu virt module guest access

Relevant Releases Architectures

Red Hat CodeReady Linux Builder (v. 8) - aarch64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux AppStream (v. 8) - 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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