SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2017:2326-1)

High Nessus Plugin ID 102952


The remote SUSE host is missing one or more security updates.


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).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


To install this SUSE Security Update use YaST online_update.
Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Software Development Kit 12-SP2:zypper in -t patch SUSE-SLE-SDK-12-SP2-2017-1438=1

SUSE Linux Enterprise Server 12-SP2:zypper in -t patch SUSE-SLE-SERVER-12-SP2-2017-1438=1

SUSE Linux Enterprise Desktop 12-SP2:zypper in -t patch SUSE-SLE-DESKTOP-12-SP2-2017-1438=1

SUSE Container as a Service Platform ALL:zypper in -t patch SUSE-CAASP-ALL-2017-1438=1

To bring your system up-to-date, use 'zypper patch'.

See Also

Plugin Details

Severity: High

ID: 102952

File Name: suse_SU-2017-2326-1.nasl

Version: $Revision: 3.3 $

Type: local

Agent: unix

Published: 2017/09/05

Modified: 2018/01/31

Dependencies: 12634

Risk Information

Risk Factor: High


Base Score: 7.2

Temporal Score: 5.3

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C


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:suse_linux:xen, p-cpe:/a:novell:suse_linux:xen-debugsource, p-cpe:/a:novell:suse_linux:xen-doc-html, p-cpe:/a:novell:suse_linux:xen-libs, p-cpe:/a:novell:suse_linux:xen-libs-debuginfo, p-cpe:/a:novell:suse_linux:xen-tools, p-cpe:/a:novell:suse_linux:xen-tools-debuginfo, p-cpe:/a:novell:suse_linux:xen-tools-domU, p-cpe:/a:novell:suse_linux:xen-tools-domU-debuginfo, cpe:/o:novell:suse_linux:12

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/09/01

Reference Information

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

OSVDB: 153753, 160002, 161463, 163428, 163429, 163430, 163431