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Test ID:1.3.6.1.4.1.25623.1.0.852221
Category:SuSE Local Security Checks
Title:SuSE Update for xen openSUSE-SU-2018:4304-1 (xen)
Summary:The remote host is missing an update for the 'xen'; package(s) announced via the openSUSE-SU-2018:4304_1 advisory.
Description:Summary:
The remote host is missing an update for the 'xen'
package(s) announced via the openSUSE-SU-2018:4304_1 advisory.

Vulnerability Insight:
This update for xen fixes the following issues:

Update to Xen 4.10.2 bug fix release (bsc#1027519).

Security vulnerabilities fixed:

- CVE-2018-19961, CVE-2018-19962: Fixed an issue related to insufficient
TLB flushing with AMD IOMMUs, which potentially allowed a guest to
escalate its privileges, may cause a Denial of Service (DoS) affecting
the entire host, or may be able to access data it is not supposed to
access. (XSA-275) (bsc#1115040)

- CVE-2018-19965: Fixed an issue related to the INVPCID instruction in
case non-canonical addresses are accessed, which may allow a guest to
cause Xen to crash, resulting in a Denial of Service (DoS) affecting the
entire host. (XSA-279) (bsc#1115045)

- CVE-2018-19966: Fixed an issue related to a previous fix for XSA-240,
which conflicted with shadow paging and allowed a guest to cause Xen to
crash, resulting in a Denial of Service (DoS). (XSA-280) (bsc#1115047)

- CVE-2018-18883: Fixed an issue related to improper restriction of nested
VT-x, which allowed a guest to cause Xen to crash, resulting in a Denial
of Service (DoS). (XSA-278) (bsc#1114405)

- CVE-2018-15468: Fixed incorrect MSR_DEBUGCTL handling, which allowed
guests to enable Branch Trace Store and may cause a Denial of Service
(DoS) of the entire host. (XSA-269) (bsc#1103276)

- CVE-2018-15469: Fixed use of v2 grant tables on ARM, which were not
properly implemented and may cause a Denial of Service (DoS). (XSA-268)
(bsc#1103275)

- CVE-2018-15470: Fixed an issue in the logic in oxenstored for handling
writes, which allowed a guest to write memory unbounded leading to
system-wide Denial
of Service (DoS). (XSA-272) (bsc#1103279)

- CVE-2018-3646: Mitigations for VMM aspects of L1 Terminal Fault
(XSA-273) (bsc#1091107)

Other bugs fixed:

- Fixed an issue related to a domU hang on SLE12-SP3 HV (bsc#1108940)

- Fixed an issue with xpti=no-dom0 not working as expected (bsc#1105528)

- Fixed a kernel oops related to fs/dcache.c called by
d_materialise_unique() (bsc#1094508)

This update was imported from the SUSE:SLE-15:Update update project.


Patch Instructions:

To install this openSUSE 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:

- openSUSE Leap 15.0:

zypper in -t patch openSUSE-2018-1624=1

Affected Software/OS:
xen on openSUSE Leap 15.0.

Solution:
Please install the updated package(s).

CVSS Score:
5.0

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

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2018-3646
https://lists.debian.org/debian-lts-announce/2018/08/msg00029.html
https://lists.debian.org/debian-lts-announce/2018/09/msg00017.html
https://foreshadowattack.eu/
Cisco Security Advisory: 20180814 CPU Side-Channel Information Disclosure Vulnerabilities: August 2018
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180814-cpusidechannel
Debian Security Information: DSA-4274 (Google Search)
https://www.debian.org/security/2018/dsa-4274
Debian Security Information: DSA-4279 (Google Search)
https://www.debian.org/security/2018/dsa-4279
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V4UWGORQWCENCIF2BHWUEF2ODBV75QS2/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XRFKQWYV2H4BV75CUNGCGE5TNVQCLBGZ/
FreeBSD Security Advisory: FreeBSD-SA-18:09
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:09.l1tf.asc
https://security.gentoo.org/glsa/201810-06
RedHat Security Advisories: RHSA-2018:2384
https://access.redhat.com/errata/RHSA-2018:2384
RedHat Security Advisories: RHSA-2018:2387
https://access.redhat.com/errata/RHSA-2018:2387
RedHat Security Advisories: RHSA-2018:2388
https://access.redhat.com/errata/RHSA-2018:2388
RedHat Security Advisories: RHSA-2018:2389
https://access.redhat.com/errata/RHSA-2018:2389
RedHat Security Advisories: RHSA-2018:2390
https://access.redhat.com/errata/RHSA-2018:2390
RedHat Security Advisories: RHSA-2018:2391
https://access.redhat.com/errata/RHSA-2018:2391
RedHat Security Advisories: RHSA-2018:2392
https://access.redhat.com/errata/RHSA-2018:2392
RedHat Security Advisories: RHSA-2018:2393
https://access.redhat.com/errata/RHSA-2018:2393
RedHat Security Advisories: RHSA-2018:2394
https://access.redhat.com/errata/RHSA-2018:2394
RedHat Security Advisories: RHSA-2018:2395
https://access.redhat.com/errata/RHSA-2018:2395
RedHat Security Advisories: RHSA-2018:2396
https://access.redhat.com/errata/RHSA-2018:2396
RedHat Security Advisories: RHSA-2018:2402
https://access.redhat.com/errata/RHSA-2018:2402
RedHat Security Advisories: RHSA-2018:2403
https://access.redhat.com/errata/RHSA-2018:2403
RedHat Security Advisories: RHSA-2018:2404
https://access.redhat.com/errata/RHSA-2018:2404
RedHat Security Advisories: RHSA-2018:2602
https://access.redhat.com/errata/RHSA-2018:2602
RedHat Security Advisories: RHSA-2018:2603
https://access.redhat.com/errata/RHSA-2018:2603
https://usn.ubuntu.com/3740-1/
https://usn.ubuntu.com/3740-2/
https://usn.ubuntu.com/3741-1/
https://usn.ubuntu.com/3742-1/
https://usn.ubuntu.com/3742-2/
https://usn.ubuntu.com/3741-2/
https://usn.ubuntu.com/3756-1/
https://usn.ubuntu.com/3823-1/
CERT/CC vulnerability note: VU#982149
https://www.kb.cert.org/vuls/id/982149
BugTraq ID: 105080
http://www.securityfocus.com/bid/105080
http://www.securitytracker.com/id/1041451
http://www.securitytracker.com/id/1042004
CopyrightCopyright (C) 2019 Greenbone Networks GmbH

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