Synopsis
Moderate: libvirt security and bug fix update
Type/Severity
Security Advisory: Moderate
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 impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
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.
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.
Affected Products
-
Red Hat Enterprise Linux Server 7 x86_64
-
Red Hat Enterprise Linux Workstation 7 x86_64
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Red Hat Enterprise Linux Desktop 7 x86_64
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Red Hat Enterprise Linux for IBM z Systems 7 s390x
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Red Hat Enterprise Linux for Power, big endian 7 ppc64
-
Red Hat Enterprise Linux for Scientific Computing 7 x86_64
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Red Hat Virtualization 4 for RHEL 7 x86_64
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Red Hat Gluster Storage Server for On-premise 3 for RHEL 7 x86_64
-
Red Hat Virtualization for IBM Power LE 4 for RHEL 7 ppc64le
-
Red Hat Enterprise Linux for Power, little endian 7 ppc64le
Fixes
- BZ - 1809740 - CVE-2019-20485 libvirt: Potential DoS by holding a monitor job while querying QEMU guest-agent
- BZ - 1815269 - Migration failing due to "Internal error: Missing essential config entry 'ide0:0.fileName'"
- BZ - 1815572 - VM live migration fails: the CPU is incompatible with host CPU: Host CPU does not provide required fea-tures: virt-ssbd
- BZ - 1816650 - CVE-2020-10703 libvirt: Potential denial of service via active pool without target path
- BZ - 1823976 - Libdevmapper fails with "Device %s not found" when calling dm_task_set_name()
CVEs
References
Vulmon