SUSE SLES12 Security Update : xen (SUSE-SU-2017:0582-1)

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


Synopsis :

The remote SUSE host is missing one or more security updates.

Description :

This update for xen fixes several issues. These security issues were
fixed :

- CVE-2017-5973: A infinite loop while doing control
transfer in xhci_kick_epctx allowed privileged user
inside the guest to crash the host process resulting in
DoS (bsc#1025188)

- CVE-2016-10155: The virtual hardware watchdog
'wdt_i6300esb' was vulnerable to a memory leakage issue
allowing a privileged user to cause a DoS and/or
potentially crash the Qemu process on the host
(bsc#1024183)

- CVE-2017-2620: In CIRRUS_BLTMODE_MEMSYSSRC mode the
bitblit copy routine cirrus_bitblt_cputovideo failed to
check the memory region, allowing for an out-of-bounds
write that allows for privilege escalation (bsc#1024834)

- CVE-2017-5856: The MegaRAID SAS 8708EM2 Host Bus Adapter
emulation support was vulnerable to a memory leakage
issue allowing a privileged user to leak host memory
resulting in DoS (bsc#1024186)

- CVE-2017-5898: The CCID Card device emulator support was
vulnerable to an integer overflow flaw allowing a
privileged user to crash the Qemu process on the host
resulting in DoS (bsc#1024307)

- CVE-2017-2615: An error in the bitblt copy operation
could have allowed a malicious guest administrator to
cause an out of bounds memory access, possibly leading
to information disclosure or privilege escalation
(bsc#1023004)

- CVE-2014-8106: A heap-based buffer overflow in the
Cirrus VGA emulator allowed local guest users to execute
arbitrary code via vectors related to blit regions
(bsc#907805).

- A malicious guest could have, by frequently rebooting
over extended periods of time, run the host system out
of memory, resulting in a Denial of Service (DoS)
(bsc#1022871)

- CVE-2017-5579: The 16550A UART serial device emulation
support was vulnerable to a memory leakage issue
allowing a privileged user to cause a DoS and/or
potentially crash the Qemu process on the host
(bsc#1022627)

- CVE-2016-9907: The USB redirector usb-guest support was
vulnerable to a memory leakage flaw when destroying the
USB redirector in 'usbredir_handle_destroy'. A guest
user/process could have used this issue to leak host
memory, resulting in DoS for a host (bsc#1014490)

- CVE-2016-9911: The USB EHCI Emulation support was
vulnerable to a memory leakage issue while processing
packet data in 'ehci_init_transfer'. A guest
user/process could have used this issue to leak host
memory, resulting in DoS for the host (bsc#1014507)

- CVE-2016-9921: The Cirrus CLGD 54xx VGA Emulator support
was vulnerable to a divide by zero issue while copying
VGA data. A privileged user inside guest could have used
this flaw to crash the process instance on the host,
resulting in DoS (bsc#1015169)

- CVE-2016-9922: The Cirrus CLGD 54xx VGA Emulator support
was vulnerable to a divide by zero issue while copying
VGA data. A privileged user inside guest could have used
this flaw to crash the process instance on the host,
resulting in DoS (bsc#1015169)

- CVE-2016-9101: A memory leak in hw/net/eepro100.c
allowed local guest OS administrators to cause a denial
of service (memory consumption and QEMU process crash)
by repeatedly unplugging an i8255x (PRO100) NIC device
(bsc#1013668)

- CVE-2016-9776: The ColdFire Fast Ethernet Controller
emulator support was vulnerable to an infinite loop
issue while receiving packets in 'mcf_fec_receive'. A
privileged user/process inside guest could have used
this issue to crash the Qemu process on the host leading
to DoS (bsc#1013657) These non-security issues were
fixed :

- bsc#1000195: Prevent panic on CPU0 while booting on SLES
11 SP3

- bsc#1002496: Added support for reloading clvm in
block-dmmd block-dmmd

Note that Tenable Network Security has extracted the preceding
description block directly from the SUSE security advisory. Tenable
has attempted to automatically clean and format it as much as possible
without introducing additional issues.

See also :

https://bugzilla.suse.com/1000195
https://bugzilla.suse.com/1002496
https://bugzilla.suse.com/1013657
https://bugzilla.suse.com/1013668
https://bugzilla.suse.com/1014490
https://bugzilla.suse.com/1014507
https://bugzilla.suse.com/1015169
https://bugzilla.suse.com/1016340
https://bugzilla.suse.com/1022627
https://bugzilla.suse.com/1022871
https://bugzilla.suse.com/1023004
https://bugzilla.suse.com/1024183
https://bugzilla.suse.com/1024186
https://bugzilla.suse.com/1024307
https://bugzilla.suse.com/1024834
https://bugzilla.suse.com/1025188
https://bugzilla.suse.com/907805
https://www.suse.com/security/cve/CVE-2014-8106.html
https://www.suse.com/security/cve/CVE-2016-10155.html
https://www.suse.com/security/cve/CVE-2016-9101.html
https://www.suse.com/security/cve/CVE-2016-9776.html
https://www.suse.com/security/cve/CVE-2016-9907.html
https://www.suse.com/security/cve/CVE-2016-9911.html
https://www.suse.com/security/cve/CVE-2016-9921.html
https://www.suse.com/security/cve/CVE-2016-9922.html
https://www.suse.com/security/cve/CVE-2017-2615.html
https://www.suse.com/security/cve/CVE-2017-2620.html
https://www.suse.com/security/cve/CVE-2017-5579.html
https://www.suse.com/security/cve/CVE-2017-5856.html
https://www.suse.com/security/cve/CVE-2017-5898.html
https://www.suse.com/security/cve/CVE-2017-5973.html
http://www.nessus.org/u?128f4f95

Solution :

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

SUSE Linux Enterprise Server for SAP 12:zypper in -t patch
SUSE-SLE-SAP-12-2017-299=1

SUSE Linux Enterprise Server 12-LTSS:zypper in -t patch
SUSE-SLE-SERVER-12-2017-299=1

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

Risk factor :

Medium / CVSS Base Score : 4.9
(CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C)
CVSS Temporal Score : 4.4
(CVSS2#E:POC/RL:U/RC:ND)
Public Exploit Available : true

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