RHSA-2019:2229 - Security Advisory

Topic

An update for spice-gtk, libgovirt, spice-vdagent, and virt-viewer 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 spice-gtk packages provide a GIMP Toolkit (GTK+) widget for Simple Protocol for Independent Computing Environments (SPICE) clients. Both Virtual Machine Manager and Virtual Machine Viewer can make use of this widget to access virtual machines using the SPICE protocol.

The libgovirt packages contain a library that allows applications to use the oVirt Representational State Transfer (REST) API to list virtual machines (VMs) managed by an oVirt instance. The library is also used to get the connection parameters needed to establish a connection to the VMs using Simple Protocol For Independent Computing Environments (SPICE) or Virtual Network Computing (VNC).

The spice-vdagent packages provide a SPICE agent for Linux guests.

The virt-viewer packages provide Virtual Machine Viewer, which is a lightweight interface for interacting with the graphical display of a virtualized guest.

Security Fix(es):

• spice-client: Insufficient encoding checks for LZ can cause different integer/buffer overflows (CVE-2018-10893)

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.

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

Affected Products

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le

Fixes

• BZ - 1427467 - Foreign Menu - incorrect REST endpoint used to load the storagedomains
• BZ - 1505809 - release the physical usb stick from guest ,host can not work well
• BZ - 1508274 - remote-viewer recent dialog doesn't pop up at the center of the main window
• BZ - 1510411 - Mark "PrintScreen" translatable as "Ctrl+Alt+Fx" keys
• BZ - 1545212 - Dependency failed for Activation socket for spice guest agent daemon.
• BZ - 1594876 - spice-vdagent print error messages to systemd journal when selecting text on host
• BZ - 1598234 - CVE-2018-10893 spice-client: Insufficient encoding checks for LZ can cause different integer/buffer overflows
• BZ - 1623756 - vm's name could not be added into settings file
• BZ - 1625550 - virt-viewer can not establish tls connection for usbredir
• BZ - 1650596 - The spice-vdagent is not starting and spice is opening thousands of unix sockets.
• BZ - 1658325 - new version of virt-viewer removes /usr/libexec/spice-xpi-client-remote-viewer but fails to remove alternatives for spice-xpi-client
• BZ - 1686008 - "clipboard: unexpected selection type x-special/gnome-copied-files" errors in journal

CVEs

• CVE-2018-10893

References

• 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