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SUSE SLES12 Security Update : xen (SUSE-SU-2017:2873-1)

high Nessus Plugin ID 104255

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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-2017-5526: The ES1370 audio device emulation support was vulnerable to a memory leakage issue allowing a privileged user inside the guest to cause a DoS and/or potentially crash the Qemu process on the host (bsc#1059777)

 - CVE-2017-15593: Missing cleanup in the page type system allowed a malicious or buggy PV guest to cause DoS (XSA-242 bsc#1061084)

 - CVE-2017-15592: A problem in the shadow pagetable code allowed a malicious or buggy HVM guest to cause DoS or cause hypervisor memory corruption potentially allowing the guest to escalate its privilege (XSA-243 bsc#1061086)

 - CVE-2017-15594: Problematic handling of the selector fields in the Interrupt Descriptor Table (IDT) allowed a malicious or buggy x86 PV guest to escalate its privileges or cause DoS (XSA-244 bsc#1061087)

 - CVE-2017-15591: Missing checks in the handling of DMOPs allowed malicious or buggy stub domain kernels or tool stacks otherwise living outside of Domain0 to cause a DoS (XSA-238 bsc#1061077)

 - CVE-2017-15589: Intercepted I/O write operations with less than a full machine word's worth of data were not properly handled, which allowed a malicious unprivileged x86 HVM guest to obtain sensitive information from the host or other guests (XSA-239 bsc#1061080)

 - CVE-2017-15595: In certain configurations of linear page tables a stack overflow might have occured that allowed a malicious or buggy PV guest to cause DoS and potentially privilege escalation and information leaks (XSA-240 bsc#1061081)

 - CVE-2017-15588: Under certain conditions x86 PV guests could have caused the hypervisor to miss a necessary TLB flush for a page. This allowed a malicious x86 PV guest to access all of system memory, allowing for privilege escalation, DoS, and information leaks (XSA-241 bsc#1061082)

 - CVE-2017-15590: Multiple issues existed with the setup of PCI MSI interrupts that allowed a malicious or buggy guest to cause DoS and potentially privilege escalation and information leaks (XSA-237 bsc#1061076)

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 6:zypper in -t patch SUSE-OpenStack-Cloud-6-2017-1795=1

SUSE Linux Enterprise Server for SAP 12-SP1:zypper in -t patch SUSE-SLE-SAP-12-SP1-2017-1795=1

SUSE Linux Enterprise Server 12-SP1-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-SP1-2017-1795=1

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

See Also

https://www.suse.com/security/cve/CVE-2017-15590/

https://www.suse.com/security/cve/CVE-2017-15591/

https://www.suse.com/security/cve/CVE-2017-15592/

https://www.suse.com/security/cve/CVE-2017-15593/

https://www.suse.com/security/cve/CVE-2017-15594/

https://www.suse.com/security/cve/CVE-2017-15595/

https://bugzilla.suse.com/show_bug.cgi?id=1059777

https://bugzilla.suse.com/show_bug.cgi?id=1061076

https://bugzilla.suse.com/show_bug.cgi?id=1061077

https://bugzilla.suse.com/show_bug.cgi?id=1061080

https://bugzilla.suse.com/show_bug.cgi?id=1061081

https://bugzilla.suse.com/show_bug.cgi?id=1061082

https://bugzilla.suse.com/show_bug.cgi?id=1061084

https://bugzilla.suse.com/show_bug.cgi?id=1061086

https://bugzilla.suse.com/show_bug.cgi?id=1061087

https://www.suse.com/security/cve/CVE-2017-15588/

https://www.suse.com/security/cve/CVE-2017-15589/

https://www.suse.com/security/cve/CVE-2017-5526/

http://www.nessus.org/u?03397077

Plugin Details

Severity: High

ID: 104255

File Name: suse_SU-2017-2873-1.nasl

Version: 3.8

Type: local

Agent: unix

Published: 10/30/2017

Updated: 1/6/2021

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

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

Temporal Vector: CVSS:3.0/E:P/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 Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/27/2017

Vulnerability Publication Date: 3/15/2017

Reference Information

CVE: CVE-2017-15588, CVE-2017-15589, CVE-2017-15590, CVE-2017-15591, CVE-2017-15592, CVE-2017-15593, CVE-2017-15594, CVE-2017-15595, CVE-2017-5526