openSUSE Security Update : xen (openSUSE-2017-799)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote openSUSE host is missing a security update.

Description :

This update for xen fixes several issues.

These security issues were fixed :

- CVE-2017-10912: Page transfer might have allowed PV
guest to elevate privilege (XSA-217, bsc#1042882)

- CVE-2017-10913 CVE-2017-10914: Races in the grant table
unmap code allowed for informations leaks and
potentially privilege escalation (XSA-218, bsc#1042893)

- CVE-2017-10915: Insufficient reference counts during
shadow emulation allowed a malicious pair of guest to
elevate their privileges to the privileges that XEN runs
under (XSA-219, bsc#1042915)

- CVE-2017-10917: Missing NULL pointer check in event
channel poll allows guests to DoS the host (XSA-221,
bsc#1042924)

- CVE-2017-10918: Stale P2M mappings due to insufficient
error checking allowed malicious guest to leak
information or elevate privileges (XSA-222, bsc#1042931)

- CVE-2017-10920, CVE-2017-10921, CVE-2017-10922: Grant
table operations mishandled reference counts allowing
malicious guests to escape (XSA-224, bsc#1042938)

- CVE-2017-9330: USB OHCI Emulation in qemu allowed local
guest OS users to cause a denial of service (infinite
loop) by leveraging an incorrect return value
(bsc#1042160)

- CVE-2017-8309: Memory leak in the audio/audio.c allowed
remote attackers to cause a denial of service (memory
consumption) by repeatedly starting and stopping audio
capture (bsc#1037243)

- PKRU and BND* leakage between vCPU-s might have leaked
information to other guests (XSA-220, bsc#1042923)

These non-security issues were fixed :

- bsc#1027519: Included various upstream patches

- bsc#1035642: Ensure that rpmbuild works

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

See also :

https://bugzilla.opensuse.org/show_bug.cgi?id=1027519
https://bugzilla.opensuse.org/show_bug.cgi?id=1035642
https://bugzilla.opensuse.org/show_bug.cgi?id=1037243
https://bugzilla.opensuse.org/show_bug.cgi?id=1042160
https://bugzilla.opensuse.org/show_bug.cgi?id=1042882
https://bugzilla.opensuse.org/show_bug.cgi?id=1042893
https://bugzilla.opensuse.org/show_bug.cgi?id=1042915
https://bugzilla.opensuse.org/show_bug.cgi?id=1042923
https://bugzilla.opensuse.org/show_bug.cgi?id=1042924
https://bugzilla.opensuse.org/show_bug.cgi?id=1042931
https://bugzilla.opensuse.org/show_bug.cgi?id=1042938

Solution :

Update the affected xen packages.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)

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