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RedHat: RHSA-2021-2567-02 Critical Libvirt Security Patch Released

red hat
Calendar Grey April 7, 2020
Dist Redhat Esm H88
Crucial qemu-kvm security patch for Red Hat Enterprise Linux 7.7 targeting multiple vulnerabilities.
An update for qemu-kvm-ma is now available for Red Hat Enterprise Linux 7.7 Extended Update Support

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

After installing this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect.

Summary

Kernel-based Virtual Machine (KVM) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-ma packages provide the user-space component for running virtual machines that use KVM on the IBM z Systems, IBM Power, and 64-bit ARM architectures.
Security Fix(es):
* QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server (CVE-2020-1711)
* QEMU: slirp: OOB buffer access while emulating tcp protocols in tcp_emu() (CVE-2020-7039)
* QEMU: Slirp: potential OOB access due to unsafe snprintf() usages (CVE-2020-8608)
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 security update Red Hat important kernel-based virtualization qemu-kvm-ma buffer access

References

https://access.redhat.com/security/cve/CVE-2020-1711 https://access.redhat.com/security/cve/CVE-2020-7039 https://access.redhat.com/security/cve/CVE-2020-8608 https://access.redhat.com/security/updates/classification/#important

Package List

Red Hat Enterprise Linux Server EUS (v. 7.7):
Source: qemu-kvm-ma-2.12.0-33.el7_7.3.src.rpm
ppc64: qemu-img-ma-2.12.0-33.el7_7.3.ppc64.rpm qemu-kvm-ma-debuginfo-2.12.0-33.el7_7.3.ppc64.rpm
ppc64le: qemu-img-ma-2.12.0-33.el7_7.3.ppc64le.rpm qemu-kvm-common-ma-2.12.0-33.el7_7.3.ppc64le.rpm qemu-kvm-ma-2.12.0-33.el7_7.3.ppc64le.rpm qemu-kvm-ma-debuginfo-2.12.0-33.el7_7.3.ppc64le.rpm qemu-kvm-tools-ma-2.12.0-33.el7_7.3.ppc64le.rpm
s390x: qemu-img-ma-2.12.0-33.el7_7.3.s390x.rpm qemu-kvm-common-ma-2.12.0-33.el7_7.3.s390x.rpm qemu-kvm-ma-2.12.0-33.el7_7.3.s390x.rpm qemu-kvm-ma-debuginfo-2.12.0-33.el7_7.3.s390x.rpm qemu-kvm-tools-ma-2.12.0-33.el7_7.3.s390x.rpm
Red Hat Enterprise Linux Server Optional EUS (v. 7.7):
ppc64: qemu-kvm-common-ma-2.12.0-33.el7_7.3.ppc64.rpm qemu-kvm-ma-2.12.0-33.el7_7.3.ppc64.rpm qemu-kvm-ma-debuginfo-2.12.0-33.el7_7.3.ppc64.rpm qemu-kvm-tools-ma-2.12.0-33.el7_7.3.ppc64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:1352-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:1352
Issue date: 2020-04-07

Topic

An update for qemu-kvm-ma is now available for Red Hat Enterprise Linux 7.7Extended Update Support.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 security update Red Hat important kernel-based virtualization qemu-kvm-ma buffer access

Relevant Releases Architectures

Red Hat Enterprise Linux Server EUS (v. 7.7) - ppc64, ppc64le, s390x

Red Hat Enterprise Linux Server Optional EUS (v. 7.7) - ppc64

Bugs Fixed

1791551 - CVE-2020-7039 QEMU: slirp: OOB buffer access while emulating tcp protocols in tcp_emu()

1794290 - CVE-2020-1711 QEMU: block: iscsi: OOB heap access via an unexpected response of iSCSI Server

1798453 - CVE-2020-8608 QEMU: Slirp: potential OOB access due to unsafe snprintf() usages

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