openSUSE Security Update : xen (openSUSE-2017-1022)

critical Nessus Plugin ID 103158
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 to version 4.7.3 fixes several issues.

These security issues were fixed :

- CVE-2017-12135: Unbounded recursion in grant table code allowed a malicious guest to crash the host or potentially escalate privileges/leak information (XSA-226, bsc#1051787).

- CVE-2017-12137: Incorrectly-aligned updates to pagetables allowed for privilege escalation (XSA-227, bsc#1051788).

- CVE-2017-12136: Race conditions with maptrack free list handling allows a malicious guest administrator to crash the host or escalate their privilege to that of the host (XSA-228, bsc#1051789).

- CVE-2017-11434: The dhcp_decode function in slirp/bootp.c allowed local guest OS users to cause a denial of service (out-of-bounds read) via a crafted DHCP options string (bsc#1049578).

- CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which allowed remote attackers to cause a denial of service (daemon crash) by disconnecting during a server-to-client reply attempt (bsc#1046637).

- CVE-2017-12855: Premature clearing of GTF_writing / GTF_reading lead to potentially leaking sensitive information (XSA-230 CVE-2017-12855).

These non-security issues were fixed :

- bsc#1055695: XEN: 11SP4 and 12SP3 HVM guests can not be restored after the save using xl stack

- bsc#1035231: Migration of HVM domU did not use superpages on destination dom0

- bsc#1002573: Optimized LVM functions in block-dmmd block-dmmd

- bsc#1037840: Xen-detect always showed HVM for PV guests

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=1002573

https://bugzilla.opensuse.org/show_bug.cgi?id=1026236

https://bugzilla.opensuse.org/show_bug.cgi?id=1035231

https://bugzilla.opensuse.org/show_bug.cgi?id=1037840

https://bugzilla.opensuse.org/show_bug.cgi?id=1046637

https://bugzilla.opensuse.org/show_bug.cgi?id=1049578

https://bugzilla.opensuse.org/show_bug.cgi?id=1051787

https://bugzilla.opensuse.org/show_bug.cgi?id=1051788

https://bugzilla.opensuse.org/show_bug.cgi?id=1051789

https://bugzilla.opensuse.org/show_bug.cgi?id=1052686

https://bugzilla.opensuse.org/show_bug.cgi?id=1055695

Plugin Details

Severity: Critical

ID: 103158

File Name: openSUSE-2017-1022.nasl

Version: 3.5

Type: local

Agent: unix

Published: 9/13/2017

Updated: 1/19/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: High

Base Score: 9

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

CVSS v3

Risk Factor: Critical

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: 9/8/2017

Reference Information

CVE: CVE-2016-9603, CVE-2017-10664, CVE-2017-11434, CVE-2017-12135, CVE-2017-12136, CVE-2017-12137, CVE-2017-12855