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SUSE SLED15 / SLES15 Security Update : xen (SUSE-SU-2019:3309-1)

high Nessus Plugin ID 132091

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Synopsis

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

Description

This update for xen fixes the following issues :

CVE-2019-19581: Fixed a potential out of bounds on 32-bit Arm (bsc#1158003 XSA-307).

CVE-2019-19582: Fixed a potential infinite loop when x86 accesses to bitmaps with a compile time known size of 64 (bsc#1158003 XSA-307).

CVE-2019-19583: Fixed improper checks which could have allowed HVM/PVH guest userspace code to crash the guest,leading to a guest denial of service (bsc#1158004 XSA-308).

CVE-2019-19578: Fixed an issue where a malicious or buggy PV guest could have caused hypervisor crash resulting in denial of service affecting the entire host (bsc#1158005 XSA-309).

CVE-2019-19580: Fixed a privilege escalation where a malicious PV guest administrator could have been able to escalate their privilege to that of the host (bsc#1158006 XSA-310).

CVE-2019-19577: Fixed an issue where a malicious guest administrator could have caused Xen to access data structures while they are being modified leading to a crash (bsc#1158007 XSA-311).

CVE-2019-19579: Fixed a privilege escaltion where an untrusted domain with access to a physical device can DMA into host memory (bsc#1157888 XSA-306).

CVE-2019-18423: A malicious guest administrator may cause a hypervisor crash, resulting in a Denial of Service (DoS) (bsc#1154460 XSA-301).

CVE-2019-18422: A malicious ARM guest might contrive to arrange for critical Xen code to run with interrupts erroneously enabled. This could lead to data corruption, denial of service, or possibly even privilege escalation. However a precise attack technique has not been identified. (bsc#1154464 XSA-303)

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 Linux Enterprise Module for Server Applications 15:zypper in -t patch SUSE-SLE-Module-Server-Applications-15-2019-3309=1

SUSE Linux Enterprise Module for Basesystem 15:zypper in -t patch SUSE-SLE-Module-Basesystem-15-2019-3309=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1154460

https://bugzilla.suse.com/show_bug.cgi?id=1154464

https://bugzilla.suse.com/show_bug.cgi?id=1157888

https://bugzilla.suse.com/show_bug.cgi?id=1158003

https://bugzilla.suse.com/show_bug.cgi?id=1158004

https://bugzilla.suse.com/show_bug.cgi?id=1158005

https://bugzilla.suse.com/show_bug.cgi?id=1158006

https://bugzilla.suse.com/show_bug.cgi?id=1158007

https://www.suse.com/security/cve/CVE-2019-18422/

https://www.suse.com/security/cve/CVE-2019-18423/

https://www.suse.com/security/cve/CVE-2019-19577/

https://www.suse.com/security/cve/CVE-2019-19578/

https://www.suse.com/security/cve/CVE-2019-19579/

https://www.suse.com/security/cve/CVE-2019-19580/

https://www.suse.com/security/cve/CVE-2019-19581/

https://www.suse.com/security/cve/CVE-2019-19582/

https://www.suse.com/security/cve/CVE-2019-19583/

http://www.nessus.org/u?8871f024

Plugin Details

Severity: High

ID: 132091

File Name: suse_SU-2019-3309-1.nasl

Version: 1.6

Type: local

Agent: unix

Published: 12/17/2019

Updated: 5/18/2022

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

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

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

CVSS Score Source: CVE-2019-18423

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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:U/RL:O/RC:C

CVSS Score Source: CVE-2019-19578

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:xen-debugsource, p-cpe:/a:novell:suse_linux:xen-tools, p-cpe:/a:novell:suse_linux:xen-tools-domu-debuginfo, p-cpe:/a:novell:suse_linux:xen-tools-domu, p-cpe:/a:novell:suse_linux:xen, p-cpe:/a:novell:suse_linux:xen-tools-debuginfo, p-cpe:/a:novell:suse_linux:xen-libs-debuginfo, p-cpe:/a:novell:suse_linux:xen-libs, p-cpe:/a:novell:suse_linux:xen-devel, cpe:/o:novell:suse_linux:15

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: 12/16/2019

Vulnerability Publication Date: 10/31/2019

Reference Information

CVE: CVE-2019-18422, CVE-2019-18423, CVE-2019-19577, CVE-2019-19578, CVE-2019-19579, CVE-2019-19580, CVE-2019-19581, CVE-2019-19582, CVE-2019-19583

IAVB: 2019-B-0091-S