SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2017:0127-1)

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


Synopsis :

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

Description :

qemu was updated to fix several issues. These security issues were
fixed :

- CVE-2016-9102: Memory leak in the v9fs_xattrcreate
function in hw/9pfs/9p.c in allowed local guest OS
administrators to cause a denial of service (memory
consumption and QEMU process crash) via a large number
of Txattrcreate messages with the same fid number
(bsc#1014256).

- CVE-2016-9103: The v9fs_xattrcreate function in
hw/9pfs/9p.c in allowed local guest OS administrators to
obtain sensitive host heap memory information by reading
xattribute values writing to them (bsc#1007454).

- CVE-2016-9381: Improper processing of shared rings
allowing guest administrators take over the qemu
process, elevating their privilege to that of the qemu
process (bsc#1009109)

- 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#1013285).

- CVE-2016-9845: The Virtio GPU Device emulator support as
vulnerable to an information leakage issue while
processing the 'VIRTIO_GPU_CMD_GET_CAPSET_INFO' command.
A guest user/process could have used this flaw to leak
contents of the host memory (bsc#1013767).

- CVE-2016-9846: The Virtio GPU Device emulator support
was vulnerable to a memory leakage issue while updating
the cursor data in update_cursor_data_virgl. A guest
user/process could have used this flaw to leak host
memory bytes, resulting in DoS for the host
(bsc#1013764).

- 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#1014109).

- CVE-2016-9908: The Virtio GPU Device emulator support
was vulnerable to an information leakage issue while
processing the 'VIRTIO_GPU_CMD_GET_CAPSET' command. A
guest user/process could have used this flaw to leak
contents of the host memory (bsc#1014514).

- 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#1014111).

- CVE-2016-9912: The Virtio GPU Device emulator support
was vulnerable to a memory leakage issue while
destroying gpu resource object in
'virtio_gpu_resource_destroy'. A guest user/process
could have used this flaw to leak host memory bytes,
resulting in DoS for the host (bsc#1014112).

- CVE-2016-9913: VirtFS was vulnerable to memory leakage
issue via its '9p-handle' or '9p-proxy' backend drivers.
A privileged user inside guest could have used this flaw
to leak host memory, thus affecting other services on
the host and/or potentially crash the Qemu process on
the host (bsc#1014110). These non-security issues were
fixed :

- Fixed uint64 property parsing and add regression tests
(bsc#937125)

- Added a man page for kvm_stat

- Fix crash in vte (bsc#1008519)

- Various upstream commits targeted towards stable
releases (bsc#1013341)

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/1007454
https://bugzilla.suse.com/1008519
https://bugzilla.suse.com/1009109
https://bugzilla.suse.com/1013285
https://bugzilla.suse.com/1013341
https://bugzilla.suse.com/1013764
https://bugzilla.suse.com/1013767
https://bugzilla.suse.com/1014109
https://bugzilla.suse.com/1014110
https://bugzilla.suse.com/1014111
https://bugzilla.suse.com/1014112
https://bugzilla.suse.com/1014256
https://bugzilla.suse.com/1014514
https://bugzilla.suse.com/1016779
https://bugzilla.suse.com/937125
https://www.suse.com/security/cve/CVE-2016-9102.html
https://www.suse.com/security/cve/CVE-2016-9103.html
https://www.suse.com/security/cve/CVE-2016-9381.html
https://www.suse.com/security/cve/CVE-2016-9776.html
https://www.suse.com/security/cve/CVE-2016-9845.html
https://www.suse.com/security/cve/CVE-2016-9846.html
https://www.suse.com/security/cve/CVE-2016-9907.html
https://www.suse.com/security/cve/CVE-2016-9908.html
https://www.suse.com/security/cve/CVE-2016-9911.html
https://www.suse.com/security/cve/CVE-2016-9912.html
https://www.suse.com/security/cve/CVE-2016-9913.html
https://www.suse.com/security/cve/CVE-2016-9921.html
https://www.suse.com/security/cve/CVE-2016-9922.html
http://www.nessus.org/u?9e6a371f

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 Raspberry Pi 12-SP2:zypper in -t
patch SUSE-SLE-RPI-12-SP2-2017-68=1

SUSE Linux Enterprise Server 12-SP2:zypper in -t patch
SUSE-SLE-SERVER-12-SP2-2017-68=1

SUSE Linux Enterprise Desktop 12-SP2:zypper in -t patch
SUSE-SLE-DESKTOP-12-SP2-2017-68=1

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

Risk factor :

Medium / CVSS Base Score : 6.9
(CVSS2#AV:L/AC:M/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 5.1
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

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