SUSE SLES12 Security Update : xen (SUSE-SU-2017:1795-1)

critical Nessus Plugin ID 101293
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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-2017-9503: The MegaRAID SAS 8708EM2 Host Bus Adapter emulation support was vulnerable to a NULL pointer dereference issue which allowed a privileged user inside guest to crash the Qemu process on the host resulting in DoS (bsc#1043297)

- CVE-2017-9374: Missing free of 's->ipacket', causes a host memory leak, allowing for DoS (bsc#1043074)

- CVE-2017-10911: blkif responses leaked backend stack data, which allowed unprivileged guest to obtain sensitive information from the host or other guests (XSA-216, bsc#1042863)

- CVE-2017-10912: Page transfer might have allowed PV guest to elevate privilege (XSA-217, bsc#1042882)

- CVE-2017-10913, CVE-2017-10914: Races in the grant table unmap code allowed for informations leaks and potentially privilege escalation (XSA-218, bsc#1042893)

- CVE-2017-10915: Insufficient reference counts during shadow emulation allowed a malicious pair of guest to elevate their privileges to the privileges that XEN runs under (XSA-219, bsc#1042915)

- CVE-2017-10917: Missing NULL pointer check in event channel poll allows guests to DoS the host (XSA-221, bsc#1042924)

- CVE-2017-10918: Stale P2M mappings due to insufficient error checking allowed malicious guest to leak information or elevate privileges (XSA-222, bsc#1042931)

- CVE-2017-10920, CVE-2017-10921, CVE-2017-10922: Grant table operations mishandled reference counts allowing malicious guests to escape (XSA-224, bsc#1042938)

- CVE-2017-9330: USB OHCI Emulation in qemu allowed local guest OS users to cause a denial of service (infinite loop) by leveraging an incorrect return value (bsc#1042160)

- CVE-2017-8309: Memory leak in the audio/audio.c allowed remote attackers to cause a denial of service (memory consumption) by repeatedly starting and stopping audio capture (bsc#1037243)

- CVE-2017-8112: hw/scsi/vmw_pvscsi.c allowed local guest OS privileged users to cause a denial of service (infinite loop and CPU consumption) via the message ring page count (bsc#1036470)

- CVE-2017-8905: Xen a failsafe callback, which might have allowed PV guest OS users to execute arbitrary code on the host OS (XSA-215, bsc#1034845).

The update package also includes non-security fixes. See advisory for details.

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 Linux Enterprise Server for SAP 12:zypper in -t patch SUSE-SLE-SAP-12-2017-1118=1

SUSE Linux Enterprise Server 12-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-2017-1118=1

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

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1014136

https://bugzilla.suse.com/show_bug.cgi?id=1026236

https://bugzilla.suse.com/show_bug.cgi?id=1027519

https://bugzilla.suse.com/show_bug.cgi?id=1031460

https://bugzilla.suse.com/show_bug.cgi?id=1032148

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

https://bugzilla.suse.com/show_bug.cgi?id=1036470

https://bugzilla.suse.com/show_bug.cgi?id=1037243

https://bugzilla.suse.com/show_bug.cgi?id=1042160

https://bugzilla.suse.com/show_bug.cgi?id=1042863

https://bugzilla.suse.com/show_bug.cgi?id=1042882

https://bugzilla.suse.com/show_bug.cgi?id=1042893

https://bugzilla.suse.com/show_bug.cgi?id=1042915

https://bugzilla.suse.com/show_bug.cgi?id=1042924

https://bugzilla.suse.com/show_bug.cgi?id=1042931

https://bugzilla.suse.com/show_bug.cgi?id=1042938

https://bugzilla.suse.com/show_bug.cgi?id=1043074

https://bugzilla.suse.com/show_bug.cgi?id=1043297

https://www.suse.com/security/cve/CVE-2017-10911/

https://www.suse.com/security/cve/CVE-2017-10912/

https://www.suse.com/security/cve/CVE-2017-10913/

https://www.suse.com/security/cve/CVE-2017-10914/

https://www.suse.com/security/cve/CVE-2017-10915/

https://www.suse.com/security/cve/CVE-2017-10917/

https://www.suse.com/security/cve/CVE-2017-10918/

https://www.suse.com/security/cve/CVE-2017-10920/

https://www.suse.com/security/cve/CVE-2017-10921/

https://www.suse.com/security/cve/CVE-2017-10922/

https://www.suse.com/security/cve/CVE-2017-8112/

https://www.suse.com/security/cve/CVE-2017-8309/

https://www.suse.com/security/cve/CVE-2017-8905/

https://www.suse.com/security/cve/CVE-2017-9330/

https://www.suse.com/security/cve/CVE-2017-9374/

https://www.suse.com/security/cve/CVE-2017-9503/

http://www.nessus.org/u?022392d7

Plugin Details

Severity: Critical

ID: 101293

File Name: suse_SU-2017-1795-1.nasl

Version: 3.16

Type: local

Agent: unix

Published: 7/7/2017

Updated: 6/3/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

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

CVSS v3

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:xen, p-cpe:/a:novell:suse_linux:xen-debugsource, p-cpe:/a:novell:suse_linux:xen-doc-html, p-cpe:/a:novell:suse_linux:xen-kmp-default, p-cpe:/a:novell:suse_linux:xen-kmp-default-debuginfo, p-cpe:/a:novell:suse_linux:xen-libs, p-cpe:/a:novell:suse_linux:xen-libs-debuginfo, p-cpe:/a:novell:suse_linux:xen-tools, p-cpe:/a:novell:suse_linux:xen-tools-debuginfo, p-cpe:/a:novell:suse_linux:xen-tools-domU, p-cpe:/a:novell:suse_linux:xen-tools-domU-debuginfo, cpe:/o:novell:suse_linux:12

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/6/2017

Vulnerability Publication Date: 5/2/2017

Reference Information

CVE: CVE-2017-10911, CVE-2017-10912, CVE-2017-10913, CVE-2017-10914, CVE-2017-10915, CVE-2017-10917, CVE-2017-10918, CVE-2017-10920, CVE-2017-10921, CVE-2017-10922, CVE-2017-8112, CVE-2017-8309, CVE-2017-8905, CVE-2017-9330, CVE-2017-9374, CVE-2017-9503

IAVB: 2017-B-0074-S