Alerts This Week
Warning Icon 1 714
Alerts This Week
Warning Icon 1 714

RedHat Enterprise Linux 7: RHSA-2020:4000-01 Moderate: Libvirt DoS Fix

red hat
Calendar Grey September 29, 2020
Dist Redhat Esm H88
Explore the newest incremental security patch for libvirt within Red Hat Enterprise Linux, highlighting corrections and potential repercussions.
An update for libvirt is now available for Red Hat Enterprise Linux 7

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 the updated packages, libvirtd will be restarted automatically.

Summary

The libvirt library contains a C API for managing and interacting with the virtualization capabilities of Linux and other operating systems. In addition, libvirt provides tools for remote management of virtualized systems.
Security Fix(es):
* libvirt: Potential DoS by holding a monitor job while querying QEMU guest-agent (CVE-2019-20485)
* libvirt: Potential denial of service via active pool without target path (CVE-2020-10703)
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.
Additional Changes:
For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.9 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory moderate denial of service Red Hat Enterprise Linux security impact libvirt

References

https://access.redhat.com/security/cve/CVE-2019-20485 https://access.redhat.com/security/cve/CVE-2020-10703 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.9_release_notes/index

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: libvirt-4.5.0-36.el7.src.rpm
x86_64: libvirt-4.5.0-36.el7.x86_64.rpm libvirt-bash-completion-4.5.0-36.el7.x86_64.rpm libvirt-client-4.5.0-36.el7.i686.rpm libvirt-client-4.5.0-36.el7.x86_64.rpm libvirt-daemon-4.5.0-36.el7.x86_64.rpm libvirt-daemon-config-network-4.5.0-36.el7.x86_64.rpm libvirt-daemon-config-nwfilter-4.5.0-36.el7.x86_64.rpm libvirt-daemon-driver-interface-4.5.0-36.el7.x86_64.rpm libvirt-daemon-driver-lxc-4.5.0-36.el7.x86_64.rpm libvirt-daemon-driver-network-4.5.0-36.el7.x86_64.rpm libvirt-daemon-driver-nodedev-4.5.0-36.el7.x86_64.rpm libvirt-daemon-driver-nwfilter-4.5.0-36.el7.x86_64.rpm libvirt-daemon-driver-qemu-4.5.0-36.el7.x86_64.rpm libvirt-daemon-driver-secret-4.5.0-36.el7.x86_64.rpm libvirt-daemon-driver-storage-4.5.0-36.el7.x86_64.rpm libvirt-daemon-driver-storage-core-4.5.0-36.el7.x86_64.rpm libvirt-daemon-driver-storage-disk-4.5.0-36.el7.x86_64.rpm libvirt-daemon-driver-storage-gluster-4.5.0-36.el7.x86_64.rpm libvirt-daemon-driver-storage-iscsi-4.5.0-36.el7.x86_64.rpm libvirt-daemon-driver-storage-logical-4.5.0-36.el7.x86_64.rpm libvirt-daemon-driver-storage-mpath-4.5.0-36.el7.x86_64.rpm libvirt-daemon-driver-storage-rbd-4.5.0-36.el7.x86_64.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2020:4000-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2020:4000
Issue date: 2020-09-29

Topic

An update for libvirt is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate denial of service Red Hat Enterprise Linux security impact libvirt

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64

Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

Bugs Fixed

1809740 - CVE-2019-20485 libvirt: Potential DoS by holding a monitor job while querying QEMU guest-agent

1815269 - Migration failing due to "Internal error: Missing essential config entry 'ide0:0.fileName'"

1815572 - VM live migration fails: the CPU is incompatible with host CPU: Host CPU does not provide required fea-tures: virt-ssbd

1816650 - CVE-2020-10703 libvirt: Potential denial of service via active pool without target path

1823976 - Libdevmapper fails with "Device %s not found" when calling dm_task_set_name()

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here