Issued:
2018-04-10
Updated:
2018-04-10

RHSA-2018:1104 - Important: qemu-kvm-rhev security, bug fix, and enhancement update

Synopsis

Important: qemu-kvm-rhev security, bug fix, and enhancement update

Type/Severity

Security Advisory Important

Topic

An update for qemu-kvm-rhev is now available for Red Hat Virtualization 4 for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Important. 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

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products.

The following packages have been upgraded to a later upstream version: qemu-kvm-rhev (2.10.0). (BZ#1470749)

Security Fix(es):

  • Qemu: stack buffer overflow in NBD server triggered via long export name (CVE-2017-15118)

  • Qemu: DoS via large option request (CVE-2017-15119)

  • Qemu: vga: OOB read access during display update (CVE-2017-13672)

  • Qemu: vga: reachable assert failure during display update (CVE-2017-13673)

  • Qemu: Slirp: use-after-free when sending response (CVE-2017-13711)

  • Qemu: memory exhaustion through framebuffer update request message in VNC server (CVE-2017-15124)

  • Qemu: I/O: potential memory exhaustion via websock connection to VNC (CVE-2017-15268)

  • Qemu: Out-of-bounds read in vga_draw_text routine (CVE-2018-5683)

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.

Red Hat would like to thank David Buchanan for reporting CVE-2017-13672 and CVE-2017-13673; Wjjzhang (Tencent.com) for reporting CVE-2017-13711; and Jiang Xin and Lin ZheCheng for reporting CVE-2018-5683. The CVE-2017-15118 and CVE-2017-15119 issues were discovered by Eric Blake (Red Hat) and the CVE-2017-15124 issue was discovered by Daniel Berrange (Red Hat).

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 this update, shut down all running virtual machines. Once all virtual machines have shut down, start them again for this update to take effect.

Affected Products

ProductVersionArch
Red Hat Virtualization4x86_64
Red Hat Virtualization for IBM Power LE4ppc64le

Updated Packages

  • qemu-kvm-rhev-debuginfo-2.10.0-21.el7.x86_64.rpm
  • qemu-kvm-rhev-debuginfo-2.10.0-21.el7.ppc64le.rpm
  • qemu-kvm-rhev-2.10.0-21.el7.ppc64le.rpm
  • qemu-kvm-rhev-2.10.0-21.el7.src.rpm
  • qemu-img-rhev-2.10.0-21.el7.ppc64le.rpm
  • qemu-kvm-common-rhev-2.10.0-21.el7.ppc64le.rpm
  • qemu-kvm-common-rhev-2.10.0-21.el7.x86_64.rpm
  • qemu-kvm-rhev-2.10.0-21.el7.x86_64.rpm
  • qemu-kvm-tools-rhev-2.10.0-21.el7.ppc64le.rpm
  • qemu-img-rhev-2.10.0-21.el7.x86_64.rpm
  • qemu-kvm-tools-rhev-2.10.0-21.el7.x86_64.rpm

Fixes

CVEs

References

Additional information