SUSE SLES12 Security Update : xen (SUSE-SU-2018:2081-1)

critical Nessus Plugin ID 111433
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 the following issues: Security issues fixed :

- CVE-2018-12891: Fix preemption checks bypass in x86 PV MM handling (XSA-264) (bsc#1097521).

- CVE-2018-12892: Fix libxl failure to honour readonly flag on HVM emulated SCSI disks (XSA-266) (bsc#1097523).

- CVE-2018-12893: Fix #DB exception safety check that could be triggered by a guest (XSA-265) (bsc#1097522).

- CVE-2018-11806: Fix heap buffer overflow while reassembling fragmented datagrams (bsc#1096224).

- CVE-2018-3665: Fix lazy FP Save/Restore (XSA-267) (bsc#1095242). Bug fixes :

- bsc#1027519: Update to Xen 4.7.6 bug fix only release.

- bsc#1087289: Xen BUG at sched_credit.c:1663.

- bsc#1094725: `virsh blockresize` does not work with Xen qdisks.

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 the SUSE recommended installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE OpenStack Cloud 7:zypper in -t patch SUSE-OpenStack-Cloud-7-2018-1414=1

SUSE Linux Enterprise Server for SAP 12-SP2:zypper in -t patch SUSE-SLE-SAP-12-SP2-2018-1414=1

SUSE Linux Enterprise Server 12-SP2-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-SP2-2018-1414=1

SUSE Enterprise Storage 4:zypper in -t patch SUSE-Storage-4-2018-1414=1

See Also

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

https://bugzilla.suse.com/show_bug.cgi?id=1087289

https://bugzilla.suse.com/show_bug.cgi?id=1094725

https://bugzilla.suse.com/show_bug.cgi?id=1095242

https://bugzilla.suse.com/show_bug.cgi?id=1096224

https://bugzilla.suse.com/show_bug.cgi?id=1097521

https://bugzilla.suse.com/show_bug.cgi?id=1097522

https://bugzilla.suse.com/show_bug.cgi?id=1097523

https://www.suse.com/security/cve/CVE-2018-11806/

https://www.suse.com/security/cve/CVE-2018-12891/

https://www.suse.com/security/cve/CVE-2018-12892/

https://www.suse.com/security/cve/CVE-2018-12893/

https://www.suse.com/security/cve/CVE-2018-3665/

http://www.nessus.org/u?cd62b11e

Plugin Details

Severity: Critical

ID: 111433

File Name: suse_SU-2018-2081-1.nasl

Version: 1.7

Type: local

Agent: unix

Published: 7/30/2018

Updated: 6/3/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: High

Base Score: 7.2

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

CVSS v3

Risk Factor: Critical

Base Score: 9.9

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

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-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

Patch Publication Date: 7/27/2018

Vulnerability Publication Date: 6/13/2018

Reference Information

CVE: CVE-2018-11806, CVE-2018-12891, CVE-2018-12892, CVE-2018-12893, CVE-2018-3665

IAVB: 2018-B-0094-S