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Libvirt Security Bug Fix in RedHat Enterprise Linux 7 RHSA-2019-2294-01

red hat
Calendar Grey August 6, 2019
Dist Redhat Esm H88
Patch released for libvirt on Red Hat Enterprise Linux 7 addressing moderate security vulnerabilities along with corrective measures for CVE-2019-3840.
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: NULL pointer dereference after running qemuAgentCommand in qemuAgentGetInterfaces function (CVE-2019-3840)
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 7.7 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory moderate Red Hat bug fix DoS libvirt CVE-2019-3840

References

https://access.redhat.com/security/cve/CVE-2019-3840 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.7_release_notes/index

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: libvirt-4.5.0-23.el7.src.rpm
x86_64: libvirt-4.5.0-23.el7.x86_64.rpm libvirt-bash-completion-4.5.0-23.el7.x86_64.rpm libvirt-client-4.5.0-23.el7.i686.rpm libvirt-client-4.5.0-23.el7.x86_64.rpm libvirt-daemon-4.5.0-23.el7.x86_64.rpm libvirt-daemon-config-network-4.5.0-23.el7.x86_64.rpm libvirt-daemon-config-nwfilter-4.5.0-23.el7.x86_64.rpm libvirt-daemon-driver-interface-4.5.0-23.el7.x86_64.rpm libvirt-daemon-driver-lxc-4.5.0-23.el7.x86_64.rpm libvirt-daemon-driver-network-4.5.0-23.el7.x86_64.rpm libvirt-daemon-driver-nodedev-4.5.0-23.el7.x86_64.rpm libvirt-daemon-driver-nwfilter-4.5.0-23.el7.x86_64.rpm libvirt-daemon-driver-qemu-4.5.0-23.el7.x86_64.rpm libvirt-daemon-driver-secret-4.5.0-23.el7.x86_64.rpm libvirt-daemon-driver-storage-4.5.0-23.el7.x86_64.rpm libvirt-daemon-driver-storage-core-4.5.0-23.el7.x86_64.rpm libvirt-daemon-driver-storage-disk-4.5.0-23.el7.x86_64.rpm libvirt-daemon-driver-storage-gluster-4.5.0-23.el7.x86_64.rpm libvirt-daemon-driver-storage-iscsi-4.5.0-23.el7.x86_64.rpm libvirt-daemon-driver-storage-logical-4.5.0-23.el7.x86_64.rpm libvirt-daemon-driver-storage-mpath-4.5.0-23.el7.x86_64.rpm libvirt-daemon-driver-storage-rbd-4.5.0-23.el7.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2019:2294-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2294
Issue date: 2019-08-06

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 Red Hat bug fix DoS libvirt CVE-2019-3840

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

1501450 - Race starting multiple libvirtd user sessions at the same time

1558558 - Enhance detection of host CPU model to avoid guesses based on fea.ture list length

1584663 - [RFE] Add functionality to virsh to mount nfs shares using commands like mountvers, nosuid, nodev.

1592737 - Cannot use a xml file with XML declaration as a input of cpu-compare

1594266 - virt-xml-validate validate fails for volume having backing file

1609454 - nwfilter-binding-create succeed on interface which does not exist

1609720 - Starting VM without source configured for pci-serial device caused libvirtd crash

1612943 - Wrong RESUME event after I/O error

1613737 - Allow the inputvol to be encrypted when creating a volume from another volume

1615680 - Improve --adapter-parent-wwnn,--adapter-parent-wwpn and --adapter-parent-fabric-wwn info for pool-define-as in man page

1628469 - libvirt uses incorrect method to detect that KVM is working

1628892 - Permission denied when start guest with egl-headless display

1631606 - Create luks vol failed when give the user access control for storage-vol API

1631622 - guest with an interface referred to nwfilter killed by libvirt when restart libvirtd with access driver enabled

1632711 - [RHEL] VMs on gluster storage domain can't be migrated

1632833 - scsi host device passthrough limits IO writes

1633077 - domxml-to-native should treat --xml as the default option

Read the Full Advisory

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