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openSUSE Security Update : xen (openSUSE-2019-1199)
medium Nessus Plugin ID 124141
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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)
- 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 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).
- 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).
- 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 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).
Other issues fixed :
- Upstream bug fixes (bsc#1027519)
- Fixed an issue where setup of grant_tables and other variables may fail (bsc#1126325).
- Added a requirement for xen, xl.cfg firmware='pvgrub32|pvgrub64 (bsc#1127620).
- Added Xen cmdline option 'suse_vtsc_tolerance' to avoid TSC emulation for HVM domUs (bsc#1026236).
This update was imported from the SUSE:SLE-15:Update update project.
Solution
Update the affected xen packages.See Also
https://bugzilla.opensuse.org/show_bug.cgi?id=1127400
https://bugzilla.opensuse.org/show_bug.cgi?id=1127620
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=1114988
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
Plugin Details
Severity: Medium
ID: 124141
File Name: openSUSE-2019-1199.nasl
Version: 1.5
Type: local
Agent: unix
Family: SuSE Local Security Checks
Published: 4/18/2019
Updated: 6/3/2024
Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: Medium
Base Score: 4.9
Temporal Score: 3.6
Vector: CVSS2#AV:L/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2018-19967
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: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: p-cpe:/a:novell:opensuse:xen-debugsource, p-cpe:/a:novell:opensuse:xen-libs-32bit, cpe:/o:novell:opensuse:15.0, p-cpe:/a:novell:opensuse:xen-devel, p-cpe:/a:novell:opensuse:xen-doc-html, p-cpe:/a:novell:opensuse:xen-libs-debuginfo, p-cpe:/a:novell:opensuse:xen-tools-domu-debuginfo, p-cpe:/a:novell:opensuse:xen, p-cpe:/a:novell:opensuse:xen-libs, p-cpe:/a:novell:opensuse:xen-tools, p-cpe:/a:novell:opensuse:xen-libs-32bit-debuginfo, p-cpe:/a:novell:opensuse:xen-tools-debuginfo, p-cpe:/a:novell:opensuse:xen-tools-domu
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 4/12/2019
Vulnerability Publication Date: 12/8/2018
Reference Information
CVE: CVE-2018-19967