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RedHat: RHSA-2018-3113 Moderate: libvirt Code Injection Threat

red hat
Calendar Grey October 30, 2018
Dist Redhat Esm H88
Important revision for CentOS 7 strengthens libvirt safeguards and fixes a potential vulnerability in code execution.
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.
The following packages have been upgraded to a later upstream version: libvirt (4.5.0). (BZ#1563169)
Security Fix(es):
* libvirt: guest could inject executable code via libnss_dns.so loaded by libvirt_lxc before init (CVE-2018-6764)
For more details about the security issue(s), including the impact, a CVSS score, 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 7.6 Release Notes linked from the References section.

Topics%20covered

Topics Covered

security advisory moderate update Red Hat Enterprise Linux vulnerability code injection libvirt

References

https://access.redhat.com/security/cve/CVE-2018-6764 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/html/7.6_release_notes/index

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: libvirt-4.5.0-10.el7.src.rpm
x86_64: libvirt-4.5.0-10.el7.x86_64.rpm libvirt-bash-completion-4.5.0-10.el7.x86_64.rpm libvirt-client-4.5.0-10.el7.i686.rpm libvirt-client-4.5.0-10.el7.x86_64.rpm libvirt-daemon-4.5.0-10.el7.x86_64.rpm libvirt-daemon-config-network-4.5.0-10.el7.x86_64.rpm libvirt-daemon-config-nwfilter-4.5.0-10.el7.x86_64.rpm libvirt-daemon-driver-interface-4.5.0-10.el7.x86_64.rpm libvirt-daemon-driver-lxc-4.5.0-10.el7.x86_64.rpm libvirt-daemon-driver-network-4.5.0-10.el7.x86_64.rpm libvirt-daemon-driver-nodedev-4.5.0-10.el7.x86_64.rpm libvirt-daemon-driver-nwfilter-4.5.0-10.el7.x86_64.rpm libvirt-daemon-driver-qemu-4.5.0-10.el7.x86_64.rpm libvirt-daemon-driver-secret-4.5.0-10.el7.x86_64.rpm libvirt-daemon-driver-storage-4.5.0-10.el7.x86_64.rpm libvirt-daemon-driver-storage-core-4.5.0-10.el7.x86_64.rpm libvirt-daemon-driver-storage-disk-4.5.0-10.el7.x86_64.rpm libvirt-daemon-driver-storage-gluster-4.5.0-10.el7.x86_64.rpm libvirt-daemon-driver-storage-iscsi-4.5.0-10.el7.x86_64.rpm libvirt-daemon-driver-storage-logical-4.5.0-10.el7.x86_64.rpm libvirt-daemon-driver-storage-mpath-4.5.0-10.el7.x86_64.rpm libvirt-daemon-driver-storage-rbd-4.5.0-10.el7.x86_64.rpm

Read the Full Advisory


Advisory ID: RHSA-2018:3113-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2018:3113
Issue date: 2018-10-30

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 update Red Hat Enterprise Linux vulnerability code injection 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

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - ppc64le, s390x

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, ppc64le, s390x

Bugs Fixed

916061 - Dump progress only show up when memory-only dump finish

1149445 - [RFE] Detection of cloned environment using a unique, inmutable, intelligent identifier programmically accessible - libvirt

1291851 - support for virtio-vsock - libvirt

1300772 - RFE: add support for native TLS encryption on NBD for disk migration

1367238 - libvirt allow set busNr and numa node for a pci-bridge but won't use it

1425058 - [RFE] libvirt: Provide a way to disable ROM loading completely for a device

1425757 - RFE: add support for securely passing passwords to iSCSI block drivers1447169 - [RFE] Support hotplugging/unplugging of i6300esb watchdog

1448149 - is ignored if no NUMA nodes are configured

1454709 - delete the Qos settings for the interface on the fly makes no changes

1456165 - The sub-element for panic device should be "interleave" in rng file

1468422 - Libvirt crashed with SIGSEGV when creating a luks encrypted volume via an xml file without 'secret' element

1469338 - RFE: expose Q35 extended TSEG size in domain XML element or attribute

1470007 - [RFE] [libvirt part] Add S3 PR support to qemu (similar to mpathpersist)

1480668 - RFE: Enhance qemu to support freeing memory before exit when using memory-backend-file

1483816 - Schema for the 'target' field in should not accept 'chassis' and 'port' parameters for 'q35' machine type

1490158 - Libvirt could not reconnect qemu

Read the Full Advisory

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