SUSE SLES12 Security Update : xen (SUSE-SU-2018:1216-1) (Meltdown)

High Nessus Plugin ID 109756

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-2018-8897: Prevent mishandling of debug exceptions on x86 (XSA-260, bsc#1090820)

- Handle HPET timers in IO-APIC mode correctly to prevent malicious or buggy HVM guests from causing a hypervisor crash or potentially privilege escalation/information leaks (XSA-261, bsc#1090822)

- Prevent unbounded loop, induced by qemu allowing an attacker to permanently keep a physical CPU core busy (XSA-262, bsc#1090823)

- CVE-2018-10472: x86 HVM guest OS users (in certain configurations) were able to read arbitrary dom0 files via QMP live insertion of a CDROM, in conjunction with specifying the target file as the backing file of a snapshot (bsc#1089152).

- CVE-2018-10471: x86 PV guest OS users were able to cause a denial of service (out-of-bounds zero write and hypervisor crash) via unexpected INT 80 processing, because of an incorrect fix for CVE-2017-5754 (bsc#1089635).

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 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-7-2018-841=1

SUSE Linux Enterprise Server for SAP 12-SP2:zypper in -t patch SUSE-SLE-SAP-12-SP2-2018-841=1

SUSE Linux Enterprise Server 12-SP2-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-SP2-2018-841=1

SUSE Enterprise Storage 4:zypper in -t patch SUSE-Storage-4-2018-841=1

See Also

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

https://bugzilla.suse.com/show_bug.cgi?id=1086039

https://bugzilla.suse.com/show_bug.cgi?id=1089152

https://bugzilla.suse.com/show_bug.cgi?id=1089635

https://bugzilla.suse.com/show_bug.cgi?id=1090820

https://bugzilla.suse.com/show_bug.cgi?id=1090822

https://bugzilla.suse.com/show_bug.cgi?id=1090823

https://www.suse.com/security/cve/CVE-2018-10471/

https://www.suse.com/security/cve/CVE-2018-10472/

https://www.suse.com/security/cve/CVE-2018-8897/

http://www.nessus.org/u?561d072a

Plugin Details

Severity: High

ID: 109756

File Name: suse_SU-2018-1216-1.nasl

Version: 1.11

Type: local

Agent: unix

Published: 2018/05/14

Updated: 2019/09/10

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.2

Temporal Score: 6.3

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

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

CVSS v3.0

Base Score: 7.8

Temporal Score: 7.5

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

Temporal Vector: CVSS:3.0/E:H/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-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 Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2018/05/11

Vulnerability Publication Date: 2018/01/04

Exploitable With

Metasploit (Microsoft Windows POP/MOV SS Local Privilege Elevation Vulnerability)

Reference Information

CVE: CVE-2017-5754, CVE-2018-10471, CVE-2018-10472, CVE-2018-8897

IAVA: 2018-A-0019

IAVB: 2018-B-0057