openSUSE Security Update : xen (openSUSE-2018-803)

critical Nessus Plugin ID 111565
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 openSUSE host is missing a security update.

Description

This update for xen fixes the following issues :

Security issues fixed :

- CVE-2018-3665: Fix Lazy FP Save/Restore issue (XSA-267) (bsc#1095242).

- CVE-2018-12891: Fix possible Denial of Service (DoS) via certain PV MMU operations that affect the entire host (XSA-264) (bsc#1097521).

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

- CVE-2018-12893: Fix crash/Denial of Service (DoS) via safety check (XSA-265) (bsc#1097522).

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

Bug fixes :

- bsc#1027519: Add upstream patches from January.

- bsc#1087289: Fix xen scheduler crash.

This update was imported from the SUSE:SLE-12-SP3:Update update project.

Solution

Update the affected xen packages.

See Also

https://bugzilla.opensuse.org/show_bug.cgi?id=1027519

https://bugzilla.opensuse.org/show_bug.cgi?id=1087289

https://bugzilla.opensuse.org/show_bug.cgi?id=1095242

https://bugzilla.opensuse.org/show_bug.cgi?id=1096224

https://bugzilla.opensuse.org/show_bug.cgi?id=1097521

https://bugzilla.opensuse.org/show_bug.cgi?id=1097522

https://bugzilla.opensuse.org/show_bug.cgi?id=1097523

Plugin Details

Severity: Critical

ID: 111565

File Name: openSUSE-2018-803.nasl

Version: 1.8

Type: local

Agent: unix

Published: 8/7/2018

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:opensuse:xen, p-cpe:/a:novell:opensuse:xen-debugsource, p-cpe:/a:novell:opensuse:xen-devel, p-cpe:/a:novell:opensuse:xen-doc-html, p-cpe:/a:novell:opensuse:xen-libs, p-cpe:/a:novell:opensuse:xen-libs-debuginfo, p-cpe:/a:novell:opensuse:xen-tools, p-cpe:/a:novell:opensuse:xen-tools-debuginfo, p-cpe:/a:novell:opensuse:xen-tools-domU, p-cpe:/a:novell:opensuse:xen-tools-domU-debuginfo, cpe:/o:novell:opensuse:42.3

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

Patch Publication Date: 8/6/2018

Reference Information

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

IAVB: 2018-B-0094-S