SUSE SLES11 Security Update : xen (SUSE-SU-2016:2528-1) (Bunker Buster)

High Nessus Plugin ID 94267

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 :

- CVE-2016-7094: Buffer overflow in Xen allowed local x86 HVM guest OS administrators on guests running with shadow paging to cause a denial of service via a pagetable update (bsc#995792)

- CVE-2016-7092: The get_page_from_l3e function in arch/x86/mm.c in Xen allowed local 32-bit PV guest OS administrators to gain host OS privileges via vectors related to L3 recursive pagetables (bsc#995785)

- CVE-2016-6258: The PV pagetable code in arch/x86/mm.c in Xen allowed local 32-bit PV guest OS administrators to gain host OS privileges by leveraging fast-paths for updating pagetable entries (bsc#988675)

- CVE-2016-5338: The (1) esp_reg_read and (2) esp_reg_write functions allowed local guest OS administrators to cause a denial of service (QEMU process crash) or execute arbitrary code on the host via vectors related to the information transfer buffer (bsc#983984)

- CVE-2016-5238: The get_cmd function in hw/scsi/esp.c might have allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) via vectors related to reading from the information transfer buffer in non-DMA mode (bsc#982960)

- CVE-2014-3672: The qemu implementation in libvirt Xen allowed local guest OS users to cause a denial of service (host disk consumption) by writing to stdout or stderr (bsc#981264)

- CVE-2016-4441: The get_cmd function in the 53C9X Fast SCSI Controller (FSC) support did not properly check DMA length, which allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) via unspecified vectors, involving an SCSI command (bsc#980724)

- CVE-2016-4439: The esp_reg_write function in the 53C9X Fast SCSI Controller (FSC) support did not properly check command buffer length, which allowed local guest OS administrators to cause a denial of service (out-of-bounds write and QEMU process crash) or potentially execute arbitrary code on the host via unspecified vectors (bsc#980716)

- CVE-2016-3710: The VGA module improperly performed bounds checking on banked access to video memory, which allowed local guest OS administrators to execute arbitrary code on the host by changing access modes after setting the bank register, aka the 'Dark Portal' issue (bsc#978164)

- CVE-2016-4480: The guest_walk_tables function in arch/x86/mm/guest_walk.c in Xen did not properly handle the Page Size (PS) page table entry bit at the L4 and L3 page table levels, which might have allowed local guest OS users to gain privileges via a crafted mapping of memory (bsc#978295)

- CVE-2016-3960: Integer overflow in the x86 shadow pagetable code allowed local guest OS users to cause a denial of service (host crash) or possibly gain privileges by shadowing a superpage mapping (bsc#974038)

- CVE-2016-3158: The xrstor function did not properly handle writes to the hardware FSW.ES bit when running on AMD64 processors, which allowed local guest OS users to obtain sensitive register content information from another guest by leveraging pending exception and mask bits (bsc#973188)

- CVE-2016-4001: Buffer overflow in the stellaris_enet_receive function, when the Stellaris ethernet controller is configured to accept large packets, allowed remote attackers to cause a denial of service (QEMU crash) via a large packet (bsc#975130)

- CVE-2016-4002: Buffer overflow in the mipsnet_receive function, when the guest NIC is configured to accept large packets, allowed remote attackers to cause a denial of service (memory corruption and QEMU crash) or possibly execute arbitrary code via a packet larger than 1514 bytes (bsc#975138)

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 Server 11-SP2-LTSS:zypper in -t patch slessp2-xen-12786=1

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

See Also

https://bugzilla.suse.com/show_bug.cgi?id=973188

https://bugzilla.suse.com/show_bug.cgi?id=974038

https://bugzilla.suse.com/show_bug.cgi?id=975130

https://bugzilla.suse.com/show_bug.cgi?id=975138

https://bugzilla.suse.com/show_bug.cgi?id=978164

https://bugzilla.suse.com/show_bug.cgi?id=978295

https://bugzilla.suse.com/show_bug.cgi?id=980716

https://bugzilla.suse.com/show_bug.cgi?id=980724

https://bugzilla.suse.com/show_bug.cgi?id=981264

https://bugzilla.suse.com/show_bug.cgi?id=982960

https://bugzilla.suse.com/show_bug.cgi?id=983984

https://bugzilla.suse.com/show_bug.cgi?id=988675

https://bugzilla.suse.com/show_bug.cgi?id=995785

https://bugzilla.suse.com/show_bug.cgi?id=995792

https://www.suse.com/security/cve/CVE-2014-3615/

https://www.suse.com/security/cve/CVE-2014-3672/

https://www.suse.com/security/cve/CVE-2016-3158/

https://www.suse.com/security/cve/CVE-2016-3159/

https://www.suse.com/security/cve/CVE-2016-3710/

https://www.suse.com/security/cve/CVE-2016-3960/

https://www.suse.com/security/cve/CVE-2016-4001/

https://www.suse.com/security/cve/CVE-2016-4002/

https://www.suse.com/security/cve/CVE-2016-4439/

https://www.suse.com/security/cve/CVE-2016-4441/

https://www.suse.com/security/cve/CVE-2016-4480/

https://www.suse.com/security/cve/CVE-2016-5238/

https://www.suse.com/security/cve/CVE-2016-5338/

https://www.suse.com/security/cve/CVE-2016-6258/

https://www.suse.com/security/cve/CVE-2016-7092/

https://www.suse.com/security/cve/CVE-2016-7094/

http://www.nessus.org/u?8049ec53

Plugin Details

Severity: High

ID: 94267

File Name: suse_SU-2016-2528-1.nasl

Version: 1.9

Type: local

Agent: unix

Published: 2016/10/26

Updated: 2018/11/29

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

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

CVSS v3.0

Base Score: 9

Temporal Score: 7.8

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:xen, p-cpe:/a:novell:suse_linux:xen-devel, p-cpe:/a:novell:suse_linux:xen-doc-html, p-cpe:/a:novell:suse_linux:xen-doc-pdf, 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-kmp-trace, 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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2016/10/13

Reference Information

CVE: CVE-2014-3615, CVE-2014-3672, CVE-2016-3158, CVE-2016-3159, CVE-2016-3710, CVE-2016-3960, CVE-2016-4001, CVE-2016-4002, CVE-2016-4439, CVE-2016-4441, CVE-2016-4480, CVE-2016-5238, CVE-2016-5338, CVE-2016-6258, CVE-2016-7092, CVE-2016-7094

BID: 69654

IAVB: 2016-B-0118, 2016-B-0140