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[security-announce] openSUSE-SU-2017:1221-1: important: Security update for xen
openSUSE Security Update: Security update for xen

Announcement ID: openSUSE-SU-2017:1221-1
Rating: important
References: #1022703 #1028655 #1029827 #1030144 #1034843
#1034844 #1034994 #1036146
Cross-References: CVE-2016-9603 CVE-2017-7718
Affected Products:
openSUSE Leap 42.2

An update that solves two vulnerabilities and has 6 fixes
is now available.


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
- 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

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

Patch Instructions:

To install this openSUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product:

- openSUSE Leap 42.2:

zypper in -t patch openSUSE-2017-563=1

To bring your system up-to-date, use "zypper patch".

Package List:

- openSUSE Leap 42.2 (i586 x86_64):


- openSUSE Leap 42.2 (x86_64):



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