openSUSE Security Update : xen (openSUSE-2017-563)

critical Nessus Plugin ID 100086

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Synopsis

The remote openSUSE host is missing a security update.

Description

This update for xen fixes several issues.

These security issues were fixed :

- A malicious 64-bit PV guest may be able to access all of system memory, allowing for all of privilege escalation, host crashes, and information leaks by placing a IRET hypercall in the middle of a multicall batch (XSA-213, bsc#1034843)

- A malicious pair of guests may be able to access all of system memory, allowing for all of privilege escalation, host crashes, and information leaks because of a missing check when transfering pages via GNTTABOP_transfer (XSA-214, bsc#1034844).

- CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors related to copying VGA data via the cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_ functions (bsc#1034994).

- CVE-2016-9603: A privileged user within the guest VM could have caused a heap overflow in the device model process, potentially escalating their privileges to that of the device model process (bsc#1028655)

These non-security issues were fixed :

- bsc#1029827: Additional xenstore patch

- bsc#1036146: Xen VM dumped core to wrong path

- bsc#1022703: Prevent Xen HVM guest with OVMF to hang with unattached CDRom This update was imported from the SUSE:SLE-12-SP2:Update update project.

Solution

Update the affected xen packages.

Plugin Details

Severity: Critical

ID: 100086

File Name: openSUSE-2017-563.nasl

Version: 3.5

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 5/10/2017

Updated: 1/19/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.5

CVSS v2

Risk Factor: High

Base Score: 9

Vector: CVSS2#AV:N/AC:L/Au:S/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:opensuse:xen-libs-debuginfo-32bit, p-cpe:/a:novell:opensuse:xen-debugsource, p-cpe:/a:novell:opensuse:xen-libs-32bit, p-cpe:/a:novell:opensuse:xen-devel, p-cpe:/a:novell:opensuse:xen-doc-html, cpe:/o:novell:opensuse:42.2, p-cpe:/a:novell:opensuse:xen-libs-debuginfo, p-cpe:/a:novell:opensuse:xen-tools-domu-debuginfo, p-cpe:/a:novell:opensuse:xen, p-cpe:/a:novell:opensuse:xen-libs, p-cpe:/a:novell:opensuse:xen-tools, p-cpe:/a:novell:opensuse:xen-tools-debuginfo, p-cpe:/a:novell:opensuse:xen-tools-domu

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

Patch Publication Date: 5/9/2017

Reference Information

CVE: CVE-2016-9603, CVE-2017-7718

Detections

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