Security update for xen (important)

2017-05-09T15:08:45
ID OPENSUSE-SU-2017:1221-1
Type suse
Reporter Suse
Modified 2017-05-09T15:08:45

Description

This update for xen fixes several issues.

These security issues were fixed:

  • A malicious 64-bit PV guest may be able to access all of system memory, allowing for all of privilege escalation, host crashes, and information leaks by placing a IRET hypercall in the middle of a multicall batch (XSA-213, bsc#1034843)
  • A malicious pair of guests may be able to access all of system memory, allowing for all of privilege escalation, host crashes, and information leaks because of a missing check when transfering pages via GNTTABOP_transfer (XSA-214, bsc#1034844).
  • CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors related to copying VGA data via the cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_ functions (bsc#1034994).
  • CVE-2016-9603: A privileged user within the guest VM could have caused a heap overflow in the device model process, potentially escalating their privileges to that of the device model process (bsc#1028655)

These non-security issues were fixed:

  • bsc#1029827: Additional xenstore patch
  • bsc#1036146: Xen VM dumped core to wrong path
  • bsc#1022703: Prevent Xen HVM guest with OVMF to hang with unattached CDRom

This update was imported from the SUSE:SLE-12-SP2:Update update project.