SUSE SLES11 Security Update : xen (SUSE-SU-2017:0718-1)

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-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-2017-2615: 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)

- 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-2016-10013: Xen allowed local 64-bit x86 HVM guest
OS users to gain privileges by leveraging mishandling of
SYSCALL singlestep during emulation (bsc#1016340).

- CVE-2016-9932: CMPXCHG8B emulation on x86 systems
allowed local HVM guest OS users to obtain sensitive
information from host stack memory via a
'supposedly-ignored' operand size prefix (bsc#1012651).

- 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)

- 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-2016-10024: Xen allowed local x86 PV guest OS kernel
administrators to cause a denial of service (host hang
or crash) by modifying the instruction stream
asynchronously while performing certain kernel
operations (bsc#1014298) This non-security issue was
fixed :

- 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/1002496
https://bugzilla.suse.com/1012651
https://bugzilla.suse.com/1013657
https://bugzilla.suse.com/1013668
https://bugzilla.suse.com/1014298
https://bugzilla.suse.com/1014507
https://bugzilla.suse.com/1015169
https://bugzilla.suse.com/1016340
https://bugzilla.suse.com/1022871
https://bugzilla.suse.com/1023004
https://bugzilla.suse.com/1024183
https://bugzilla.suse.com/1024834
https://bugzilla.suse.com/907805
https://www.suse.com/security/cve/CVE-2014-8106.html
https://www.suse.com/security/cve/CVE-2016-10013.html
https://www.suse.com/security/cve/CVE-2016-10024.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-2016-9911.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-2016-9932.html
https://www.suse.com/security/cve/CVE-2017-2615.html
https://www.suse.com/security/cve/CVE-2017-2620.html
http://www.nessus.org/u?2e84d97f

Solution :

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

SUSE OpenStack Cloud 5:zypper in -t patch sleclo50sp3-xen-13030=1

SUSE Manager Proxy 2.1:zypper in -t patch slemap21-xen-13030=1

SUSE Manager 2.1:zypper in -t patch sleman21-xen-13030=1

SUSE Linux Enterprise Server 11-SP3-LTSS:zypper in -t patch
slessp3-xen-13030=1

SUSE Linux Enterprise Point of Sale 11-SP3:zypper in -t patch
sleposp3-xen-13030=1

SUSE Linux Enterprise Debuginfo 11-SP3:zypper in -t patch
dbgsp3-xen-13030=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

Ready to Amp Up Your Nessus Experience?

Get Nessus Professional to scan unlimited IPs, run compliance checks & more

Buy Nessus Professional Now