openSUSE Security Update : xen (openSUSE-2019-1226)

High Nessus Plugin ID 124147

Synopsis

The remote openSUSE host is missing a security update.

Description

This update for xen fixes the following issues :

Security issues fixed :

- CVE-2018-19967: Fixed HLE constructs that allowed guests to lock up the host, resulting in a Denial of Service (DoS). (XSA-282) (bsc#1114988)

- CVE-2019-6778: Fixed a heap buffer overflow in tcp_emu() found in slirp (bsc#1123157).

- Fixed an issue which could allow malicious or buggy guests with passed through PCI devices to be able to escalate their privileges, crash the host, or access data belonging to other guests. Additionally memory leaks were also possible (bsc#1126140).

- Fixed a race condition issue which could allow malicious PV guests to escalate their privilege to that of the hypervisor (bsc#1126141).

- Fixed an issue which could allow a malicious unprivileged guest userspace process to escalate its privilege to that of other userspace processes in the same guest and potentially thereby to that of the guest operating system (bsc#1126201).

- CVE-2019-9824: Fixed an information leak in SLiRP networking implementation which could allow a user/process to read uninitialised stack memory contents (bsc#1129623).

- CVE-2018-19961 CVE-2018-19962: Fixed insufficient TLB flushing / improper large page mappings with AMD IOMMUs (XSA-275)(bsc#1115040).

- CVE-2018-19965: Fixed denial of service issue from attempting to use INVPCID with a non-canonical addresses (XSA-279)(bsc#1115045).

- CVE-2018-19966: Fixed issue introduced by XSA-240 that could have caused conflicts with shadow paging (XSA-280)(bsc#1115047).

- Fixed an issue which could allow malicious PV guests may cause a host crash or gain access to data pertaining to other guests.Additionally, vulnerable configurations are likely to be unstable even in the absence of an attack (bsc#1126198).

- Fixed multiple access violations introduced by XENMEM_exchange hypercall which could allow a single PV guest to leak arbitrary amounts of memory, leading to a denial of service (bsc#1126192).

- Fixed an issue which could allow malicious 64bit PV guests to cause a host crash (bsc#1127400).

- Fixed an issue which could allow malicious or buggy x86 PV guest kernels to mount a Denial of Service attack affecting the whole system (bsc#1126197).

- Fixed an issue which could allow an untrusted PV domain with access to a physical device to DMA into its own pagetables leading to privilege escalation (bsc#1126195).

- Fixed an issue which could allow a malicious or buggy x86 PV guest kernels can mount a Denial of Service attack affecting the whole system (bsc#1126196).

Other issues addressed :

- Upstream bug fixes (bsc#1027519)

- Fixed an issue where live migrations were failing when spectre was enabled on xen boot cmdline (bsc#1116380).

- Fixed an issue where setup of grant_tables and other variables may fail (bsc#1126325).

- Fixed a building issue (bsc#1119161).

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

- Packages should no longer use /var/adm/fillup-templates (bsc#1069468).

- Added Xen cmdline option 'suse_vtsc_tolerance' to avoid TSC emulation for HVM domUs (bsc#1026236).

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=1026236

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

https://bugzilla.opensuse.org/show_bug.cgi?id=1069468

https://bugzilla.opensuse.org/show_bug.cgi?id=1105528

https://bugzilla.opensuse.org/show_bug.cgi?id=1114988

https://bugzilla.opensuse.org/show_bug.cgi?id=1115040

https://bugzilla.opensuse.org/show_bug.cgi?id=1115045

https://bugzilla.opensuse.org/show_bug.cgi?id=1115047

https://bugzilla.opensuse.org/show_bug.cgi?id=1116380

https://bugzilla.opensuse.org/show_bug.cgi?id=1117756

https://bugzilla.opensuse.org/show_bug.cgi?id=1119161

https://bugzilla.opensuse.org/show_bug.cgi?id=1123157

https://bugzilla.opensuse.org/show_bug.cgi?id=1126140

https://bugzilla.opensuse.org/show_bug.cgi?id=1126141

https://bugzilla.opensuse.org/show_bug.cgi?id=1126192

https://bugzilla.opensuse.org/show_bug.cgi?id=1126195

https://bugzilla.opensuse.org/show_bug.cgi?id=1126196

https://bugzilla.opensuse.org/show_bug.cgi?id=1126197

https://bugzilla.opensuse.org/show_bug.cgi?id=1126198

https://bugzilla.opensuse.org/show_bug.cgi?id=1126201

https://bugzilla.opensuse.org/show_bug.cgi?id=1126325

https://bugzilla.opensuse.org/show_bug.cgi?id=1127400

https://bugzilla.opensuse.org/show_bug.cgi?id=1129623

Plugin Details

Severity: High

ID: 124147

File Name: openSUSE-2019-1226.nasl

Version: 1.1

Type: local

Agent: unix

Published: 2019/04/18

Updated: 2019/04/18

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.2

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

CVSS v3.0

Base Score: 8.8

Vector: CVSS:3.0/AV:L/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:42.3

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

Patch Publication Date: 2019/04/17

Vulnerability Publication Date: 2018/12/06

Reference Information

CVE: CVE-2018-19665, CVE-2018-19961, CVE-2018-19962, CVE-2018-19965, CVE-2018-19966, CVE-2018-19967, CVE-2019-6778, CVE-2019-9824