openSUSE Security Update : xen (openSUSE-2020-1608)

medium Nessus Plugin ID 141168
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 :

- CVE-2020-25602: Fixed an issue where there was a crash when handling guest access to MSR_MISC_ENABLE was thrown (bsc#1176339,XSA-333)

- CVE-2020-25598: Added a missing unlock in XENMEM_acquire_resource error path (bsc#1176341,XSA-334)

- CVE-2020-25604: Fixed a race condition when migrating timers between x86 HVM vCPU-s (bsc#1176343,XSA-336)

- CVE-2020-25595: Fixed an issue where PCI passthrough code was reading back hardware registers (bsc#1176344,XSA-337)

- CVE-2020-25597: Fixed an issue where a valid event channels may not turn invalid (bsc#1176346,XSA-338)

- CVE-2020-25596: Fixed a potential denial of service in x86 pv guest kernel via SYSENTER (bsc#1176345,XSA-339)

- CVE-2020-25603: Fixed an issue due to missing barriers when accessing/allocating an event channel (bsc#1176347,XSA-340)

- CVE-2020-25600: Fixed out of bounds event channels available to 32-bit x86 domains (bsc#1176348,XSA-342)

- CVE-2020-25599: Fixed race conditions with evtchn_reset() (bsc#1176349,XSA-343)

- CVE-2020-25601: Fixed an issue due to lack of preemption in evtchn_reset() / evtchn_destroy() (bsc#1176350,XSA-344)

- Various other fixes (bsc#1027519)

This update was imported from the SUSE:SLE-15-SP2: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=1176339

https://bugzilla.opensuse.org/show_bug.cgi?id=1176341

https://bugzilla.opensuse.org/show_bug.cgi?id=1176343

https://bugzilla.opensuse.org/show_bug.cgi?id=1176344

https://bugzilla.opensuse.org/show_bug.cgi?id=1176345

https://bugzilla.opensuse.org/show_bug.cgi?id=1176346

https://bugzilla.opensuse.org/show_bug.cgi?id=1176347

https://bugzilla.opensuse.org/show_bug.cgi?id=1176348

https://bugzilla.opensuse.org/show_bug.cgi?id=1176349

https://bugzilla.opensuse.org/show_bug.cgi?id=1176350

Plugin Details

Severity: Medium

ID: 141168

File Name: openSUSE-2020-1608.nasl

Version: 1.3

Type: local

Agent: unix

Published: 10/5/2020

Updated: 10/7/2020

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2020-25597

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

Vector: AV:L/AC:L/Au:N/C:P/I:P/A:C

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

Temporal Vector: E:U/RL:O/RC:C

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-32bit-debuginfo, 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, p-cpe:/a:novell:opensuse:xen-tools-xendomains-wait-disk, cpe:/o:novell:opensuse:15.2

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

Exploit Ease: No known exploits are available

Patch Publication Date: 10/4/2020

Vulnerability Publication Date: 9/23/2020

Reference Information

CVE: CVE-2020-25595, CVE-2020-25596, CVE-2020-25597, CVE-2020-25598, CVE-2020-25599, CVE-2020-25600, CVE-2020-25601, CVE-2020-25602, CVE-2020-25603, CVE-2020-25604