SUSE SLES11 Security Update : xen (SUSE-SU-2017:3242-1)

critical Nessus Plugin ID 105149
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 SUSE host is missing one or more security updates.

Description

This update for xen fixes several issues. These security issues were fixed :

- bsc#1068187: Failure to recognize errors in the Populate on Demand (PoD) code allowed for DoS (XSA-246)

- bsc#1068191: Missing p2m error checking in PoD code allowed unprivileged guests to retain a writable mapping of freed memory leading to information leaks, privilege escalation or DoS (XSA-247).

- CVE-2017-15289: The mode4and5 write functions allowed local OS guest privileged users to cause a denial of service (out-of-bounds write access and Qemu process crash) via vectors related to dst calculation (bsc#1063123)

- CVE-2017-15597: A grant copy operation being done on a grant of a dying domain allowed a malicious guest administrator to corrupt hypervisor memory, allowing for DoS or potentially privilege escalation and information leaks (bsc#1061075).

- CVE-2017-15595: x86 PV guest OS users were able to cause a DoS (unbounded recursion, stack consumption, and hypervisor crash) or possibly gain privileges via crafted page-table stacking (bsc#1061081).

- CVE-2017-15592: x86 HVM guest OS users were able to cause a DoS (hypervisor crash) or possibly gain privileges because self-linear shadow mappings were mishandled for translated guests (bsc#1061086).

- CVE-2017-13672: The VGA display emulator support allowed local guest OS privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) via vectors involving display update (bsc#1056336)

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.

Solution

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 11-SP4:zypper in -t patch sdksp4-xen-13372=1

SUSE Linux Enterprise Server 11-SP4:zypper in -t patch slessp4-xen-13372=1

SUSE Linux Enterprise Debuginfo 11-SP4:zypper in -t patch dbgsp4-xen-13372=1

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

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1055047

https://bugzilla.suse.com/show_bug.cgi?id=1056336

https://bugzilla.suse.com/show_bug.cgi?id=1061075

https://bugzilla.suse.com/show_bug.cgi?id=1061081

https://bugzilla.suse.com/show_bug.cgi?id=1061086

https://bugzilla.suse.com/show_bug.cgi?id=1063123

https://bugzilla.suse.com/show_bug.cgi?id=1068187

https://bugzilla.suse.com/show_bug.cgi?id=1068191

https://www.suse.com/security/cve/CVE-2017-13672/

https://www.suse.com/security/cve/CVE-2017-15289/

https://www.suse.com/security/cve/CVE-2017-15592/

https://www.suse.com/security/cve/CVE-2017-15595/

https://www.suse.com/security/cve/CVE-2017-15597/

http://www.nessus.org/u?c1cd0a65

Plugin Details

Severity: Critical

ID: 105149

File Name: suse_SU-2017-3242-1.nasl

Version: 3.9

Type: local

Agent: unix

Published: 12/11/2017

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

Temporal Score: 7

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

Temporal Vector: E:POC/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Temporal Vector: E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:xen, p-cpe:/a:novell:suse_linux:xen-doc-html, p-cpe:/a:novell:suse_linux:xen-kmp-default, p-cpe:/a:novell:suse_linux:xen-kmp-pae, p-cpe:/a:novell:suse_linux:xen-libs, p-cpe:/a:novell:suse_linux:xen-tools, p-cpe:/a:novell:suse_linux:xen-tools-domU, cpe:/o:novell:suse_linux:11

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 12/8/2017

Vulnerability Publication Date: 9/1/2017

Reference Information

CVE: CVE-2017-13672, CVE-2017-15289, CVE-2017-15592, CVE-2017-15595, CVE-2017-15597