openSUSE Security Update : xen (openSUSE-2017-329)

High Nessus Plugin ID 97712

Synopsis

The remote openSUSE host is missing a security update.

Description

This update for xen fixes several issues.

These security issues were fixed :

- CVE-2017-2620: In CIRRUS_BLTMODE_MEMSYSSRC mode the bitblit copy routine cirrus_bitblt_cputovideo failed to check the memory region, allowing for an out-of-bounds write that allows for privilege escalation (bsc#1024834).

- CVE-2017-2615: An error in the bitblt copy operation could have allowed a malicious guest administrator to cause an out of bounds memory access, possibly leading to information disclosure or privilege escalation (bsc#1023004).

- A malicious guest could have, by frequently rebooting over extended periods of time, run the host system out of memory, resulting in a Denial of Service (DoS) (bsc#1022871)

- CVE-2016-9921: The Cirrus CLGD 54xx VGA Emulator support was vulnerable to a divide by zero issue while copying VGA data. A privileged user inside guest could have used this flaw to crash the process instance on the host, resulting in DoS (bsc#1015169

These non-security issues were fixed :

- bsc#1000195: Prevent panic on CPU0 while booting on SLES 11 SP3

- bsc#1002496: Added support for reloading clvm in block-dmmd block-dmmd

- bsc#1005028: Fixed building Xen RPMs from Sources

This update was imported from the SUSE:SLE-12-SP2:Update update project.

Solution

Update the affected xen packages.

See Also

https://bugzilla.opensuse.org/show_bug.cgi?id=1000195

https://bugzilla.opensuse.org/show_bug.cgi?id=1002496

https://bugzilla.opensuse.org/show_bug.cgi?id=1005028

https://bugzilla.opensuse.org/show_bug.cgi?id=1012651

https://bugzilla.opensuse.org/show_bug.cgi?id=1014298

https://bugzilla.opensuse.org/show_bug.cgi?id=1014300

https://bugzilla.opensuse.org/show_bug.cgi?id=1015169

https://bugzilla.opensuse.org/show_bug.cgi?id=1016340

https://bugzilla.opensuse.org/show_bug.cgi?id=1022871

https://bugzilla.opensuse.org/show_bug.cgi?id=1023004

https://bugzilla.opensuse.org/show_bug.cgi?id=1024834

Plugin Details

Severity: High

ID: 97712

File Name: openSUSE-2017-329.nasl

Version: 3.6

Type: local

Agent: unix

Published: 2017/03/14

Updated: 2018/09/10

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 9

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

CVSS v3.0

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-32bit, p-cpe:/a:novell:opensuse:xen-libs-debuginfo, p-cpe:/a:novell:opensuse:xen-libs-debuginfo-32bit, 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:42.2

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

Patch Publication Date: 2017/03/11

Reference Information

CVE: CVE-2016-9921, CVE-2016-9922, CVE-2017-2615, CVE-2017-2620

IAVB: 2017-B-0024