SUSE SLES11 Security Update : xen (SUSE-SU-2017:1146-1)

High Nessus Plugin ID 99961

Synopsis

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

Description

This update for xen fixes several security issues :

- A malicious 64-bit PV guest may be able to access all of system memory, allowing for all of privilege escalation, host crashes, and information leaks by placing a IRET hypercall in the middle of a multicall batch (XSA-213, bsc#1034843)

- A malicious pair of guests may be able to access all of system memory, allowing for all of privilege escalation, host crashes, and information leaks because of a missing check when transfering pages via GNTTABOP_transfer (XSA-214, bsc#1034844).

- CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors related to copying VGA data via the cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_ functions (bsc#1034994).

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

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.

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-13085=1

SUSE Manager Proxy 2.1:zypper in -t patch slemap21-xen-13085=1

SUSE Manager 2.1:zypper in -t patch sleman21-xen-13085=1

SUSE Linux Enterprise Server 11-SP3-LTSS:zypper in -t patch slessp3-xen-13085=1

SUSE Linux Enterprise Point of Sale 11-SP3:zypper in -t patch sleposp3-xen-13085=1

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

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1028655

https://bugzilla.suse.com/show_bug.cgi?id=1033948

https://bugzilla.suse.com/show_bug.cgi?id=1034843

https://bugzilla.suse.com/show_bug.cgi?id=1034844

https://bugzilla.suse.com/show_bug.cgi?id=1034845

https://bugzilla.suse.com/show_bug.cgi?id=1034994

https://bugzilla.suse.com/show_bug.cgi?id=1035483

https://www.suse.com/security/cve/CVE-2016-9603/

https://www.suse.com/security/cve/CVE-2017-7718/

https://www.suse.com/security/cve/CVE-2017-7980/

https://www.suse.com/security/cve/CVE-2017-7995/

http://www.nessus.org/u?f504077b

Plugin Details

Severity: High

ID: 99961

File Name: suse_SU-2017-1146-1.nasl

Version: 3.13

Type: local

Agent: unix

Published: 2017/05/03

Updated: 2019/09/11

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 9

Temporal Score: 6.7

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 9.9

Temporal Score: 8.6

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:xen, p-cpe:/a:novell:suse_linux:xen-doc-html, p-cpe:/a:novell:suse_linux:xen-doc-pdf, p-cpe:/a:novell:suse_linux:xen-kmp-default, p-cpe:/a:novell:suse_linux:xen-kmp-pae, p-cpe:/a:novell:suse_linux:xen-libs, p-cpe:/a:novell:suse_linux:xen-tools, p-cpe:/a:novell:suse_linux:xen-tools-domU, cpe:/o:novell:suse_linux:11

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/05/02

Vulnerability Publication Date: 2017/04/20

Reference Information

CVE: CVE-2016-9603, CVE-2017-7718, CVE-2017-7980, CVE-2017-7995