SUSE SLES11 Security Update : xen (SUSE-SU-2017:1081-1)

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 the following issues: These security issues
were fixed :

- CVE-2017-7228: Broken check in memory_exchange()
permited PV guest breakout (bsc#1030442).

- XSA-206: Unprivileged guests issuing writes to xenstore
were able to stall progress of the control domain or
driver domain, possibly leading to a Denial of Service
(DoS) of the entire host (bsc#1030144).

- CVE-2016-9603: A privileged user within the guest VM can
cause a heap overflow in the device model process,
potentially escalating their privileges to that of the
device model process (bsc#1028655).

- CVE-2017-6414: Memory leak in the vcard_apdu_new
function in card_7816.c in libcacard allowed local guest
OS users to cause a denial of service (host memory
consumption) via vectors related to allocating a new
APDU object (bsc#1027570).

- CVE-2017-6505: The ohci_service_ed_list function in
hw/usb/hcd-ohci.c allowed local guest OS users to cause
a denial of service (infinite loop) via vectors
involving the number of link endpoint list descriptors
(bsc#1028235).

- CVE-2017-2633: The VNC display driver support was
vulnerable to an out-of-bounds memory access issue. A
user/process inside guest could use this flaw to cause
DoS (bsc#1026636). These non-security issues were
fixed :

- bsc#1022555: Timeout in 'execution of
/etc/xen/scripts/block add'

- bsc#1029827: Forward port xenstored

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/1022555
https://bugzilla.suse.com/1026636
https://bugzilla.suse.com/1027519
https://bugzilla.suse.com/1027570
https://bugzilla.suse.com/1028235
https://bugzilla.suse.com/1028655
https://bugzilla.suse.com/1029827
https://bugzilla.suse.com/1030144
https://bugzilla.suse.com/1030442
https://www.suse.com/security/cve/CVE-2016-9603.html
https://www.suse.com/security/cve/CVE-2017-2633.html
https://www.suse.com/security/cve/CVE-2017-6414.html
https://www.suse.com/security/cve/CVE-2017-6505.html
https://www.suse.com/security/cve/CVE-2017-7228.html
http://www.nessus.org/u?c1aaa23a

Solution :

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

SUSE Linux Enterprise Software Development Kit 11-SP4:zypper in -t
patch sdksp4-xen-13069=1

SUSE Linux Enterprise Server 11-SP4:zypper in -t patch
slessp4-xen-13069=1

SUSE Linux Enterprise Debuginfo 11-SP4:zypper in -t patch
dbgsp4-xen-13069=1

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

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 6.0
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: SuSE Local Security Checks

Nessus Plugin ID: 99580 ()

Bugtraq ID:

CVE ID: CVE-2016-9603
CVE-2017-2633
CVE-2017-6414
CVE-2017-6505
CVE-2017-7228

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