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Višestruke ranjivosti programskog paketa xen

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SUSE Security Update: Security update for xen
______________________________________________________________________________

Announcement ID: SUSE-SU-2016:2093-1
Rating: important
References: #900418 #949889 #953339 #953362 #953518 #954872
#957986 #958848 #961600 #963161 #964427 #973188
#973631 #974038 #975130 #975138 #975907 #976058
#976111 #978164 #978295 #978413 #979620 #979670
#980716 #980724 #981264 #981276 #982024 #982025
#982026 #982224 #982225 #982286 #982695 #982960
#983973 #983984 #984981 #985503 #986586 #988675
#988676 #990843 #990923
Cross-References: CVE-2014-3672 CVE-2016-3158 CVE-2016-3159
CVE-2016-3710 CVE-2016-3960 CVE-2016-4001
CVE-2016-4002 CVE-2016-4020 CVE-2016-4037
CVE-2016-4439 CVE-2016-4441 CVE-2016-4453
CVE-2016-4454 CVE-2016-4952 CVE-2016-4962
CVE-2016-4963 CVE-2016-5105 CVE-2016-5106
CVE-2016-5107 CVE-2016-5126 CVE-2016-5238
CVE-2016-5337 CVE-2016-5338 CVE-2016-5403
CVE-2016-6258 CVE-2016-6259 CVE-2016-6351

Affected Products:
SUSE Linux Enterprise Software Development Kit 12-SP1
SUSE Linux Enterprise Server 12-SP1
SUSE Linux Enterprise Desktop 12-SP1
______________________________________________________________________________

An update that solves 27 vulnerabilities and has 18 fixes
is now available.

Description:

This update for xen to version 4.5.3 fixes the several issues.

These security issues were fixed:

– CVE-2016-6258: Potential privilege escalation in PV guests (XSA-182)
(bsc#988675).
– CVE-2016-6259: Missing SMAP whitelisting in 32-bit exception / event
delivery (XSA-183) (bsc#988676).
– CVE-2016-5337: The megasas_ctrl_get_info function allowed local guest OS
administrators to obtain sensitive host memory information via vectors
related to reading device control information (bsc#983973).
– 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-2016-4453: The vmsvga_fifo_run function allowed local guest OS
administrators to cause a denial of service (infinite loop and QEMU
process crash) via a VGA command (bsc#982225).
– CVE-2016-4454: The vmsvga_fifo_read_raw function allowed local guest OS
administrators to obtain sensitive host memory information or cause a
denial of service (QEMU process crash) by changing FIFO registers and
issuing a VGA command, which triggered an out-of-bounds read
(bsc#982224).
– CVE-2016-5126: Heap-based buffer overflow in the iscsi_aio_ioctl
function allowed local guest OS users to cause a denial of service (QEMU
process crash) or possibly execute arbitrary code via a crafted iSCSI
asynchronous I/O ioctl call (bsc#982286).
– CVE-2016-5105: Stack information leakage while reading configuration
(bsc#982024).
– CVE-2016-5106: Out-of-bounds write while setting controller properties
(bsc#982025).
– CVE-2016-5107: Out-of-bounds read in megasas_lookup_frame() function
(bsc#982026).
– CVE-2016-4963: The libxl device-handling allowed local guest OS users
with access to the driver domain to cause a denial of service
(management tool confusion) by manipulating information in the backend
directories in xenstore (bsc#979670).
– CVE-2016-4962: The libxl device-handling allowed local OS guest
administrators to cause a denial of service (resource consumption or
management facility confusion) or gain host OS privileges by
manipulating information in guest controlled areas of xenstore
(bsc#979620).
– CVE-2016-4952: Out-of-bounds access issue in pvsci_ring_init_msg/data
routines (bsc#981276).
– 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-2016-3960: 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-2016-3159: The fpu_fxrstor function in arch/x86/i387.c 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-2016-3158: 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-2016-4037: The ehci_advance_state function in hw/usb/hcd-ehci.c
allowed local guest OS administrators to cause a denial of service
(infinite loop and CPU consumption) via a circular split isochronous
transfer descriptor (siTD) list (bsc#976111).
– CVE-2016-4020: The patch_instruction function did not initialize the
imm32 variable, which allowed local guest OS administrators to obtain
sensitive information from host stack memory by accessing the Task
Priority Register (TPR) (bsc#975907).
– 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).
– bsc#978295: x86 software guest page walk PS bit handling flaw (XSA-176)
– CVE-2016-5403: virtio: unbounded memory allocation on host via guest
leading to DoS (XSA-184) (bsc#990923)
– CVE-2016-6351: scsi: esp: OOB write access in esp_do_dma (bsc#990843)

These non-security issues were fixed:

– bsc#986586: Out of memory (oom) during boot on “modprobe xenblk” (non
xen kernel)
– bsc#900418: Dump cannot be performed on SLES12 XEN
– bsc#953339: Implement SUSE specific unplug protocol for emulated PCI
devices in PVonHVM guests to qemu-xen-upstream
– bsc#953362: Implement SUSE specific unplug protocol for emulated PCI
devices in PVonHVM guests to qemu-xen-upstream
– bsc#953518: Implement SUSE specific unplug protocol for emulated PCI
devices in PVonHVM guests to qemu-xen-upstream
– bsc#984981: Implement SUSE specific unplug protocol for emulated PCI
devices in PVonHVM guests to qemu-xen-upstream
– bsc#954872: Script block-dmmd not working as expected – libxl: error:
libxl_dm.c (Additional fixes)
– bsc#982695: qemu fails to boot HVM guest from xvda
– bsc#958848: HVM guest crash at
/usr/src/packages/BUILD/xen-4.4.2-testing/obj/default/balloon/balloon.c:407

– bsc#949889: Fail to install 32-bit paravirt VM under SLES12SP1Beta3 XEN
– bsc#954872: Script block-dmmd not working as expected – libxl: error:
libxl_dm.c (another modification)
– bsc#961600: Poor performance when Xen HVM domU configured with max
memory greater than current memory
– bsc#963161: Windows VM getting stuck during load while a VF is assigned
to it after upgrading to latest maintenance updates
– bsc#976058: Xen error running simple HVM guest (Post Alpha 2 xen+qemu)
– bsc#973631: AWS EC2 kdump issue
– bsc#957986: Indirect descriptors are not compatible with Amazon block
backend
– bsc#964427: Discarding device blocks: failed – Input/output error
– bsc#985503: Fixed vif-route
– bsc#978413: PV guest upgrade from SLES11 SP4 to SLES 12 SP2 alpha3 failed

Patch Instructions:

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-SP1:

zypper in -t patch SUSE-SLE-SDK-12-SP1-2016-1238=1

– SUSE Linux Enterprise Server 12-SP1:

zypper in -t patch SUSE-SLE-SERVER-12-SP1-2016-1238=1

– SUSE Linux Enterprise Desktop 12-SP1:

zypper in -t patch SUSE-SLE-DESKTOP-12-SP1-2016-1238=1

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

Package List:

– SUSE Linux Enterprise Software Development Kit 12-SP1 (x86_64):

xen-debugsource-4.5.3_08-17.1
xen-devel-4.5.3_08-17.1

– SUSE Linux Enterprise Server 12-SP1 (x86_64):

xen-4.5.3_08-17.1
xen-debugsource-4.5.3_08-17.1
xen-doc-html-4.5.3_08-17.1
xen-kmp-default-4.5.3_08_k3.12.59_60.45-17.1
xen-kmp-default-debuginfo-4.5.3_08_k3.12.59_60.45-17.1
xen-libs-32bit-4.5.3_08-17.1
xen-libs-4.5.3_08-17.1
xen-libs-debuginfo-32bit-4.5.3_08-17.1
xen-libs-debuginfo-4.5.3_08-17.1
xen-tools-4.5.3_08-17.1
xen-tools-debuginfo-4.5.3_08-17.1
xen-tools-domU-4.5.3_08-17.1
xen-tools-domU-debuginfo-4.5.3_08-17.1

– SUSE Linux Enterprise Desktop 12-SP1 (x86_64):

xen-4.5.3_08-17.1
xen-debugsource-4.5.3_08-17.1
xen-kmp-default-4.5.3_08_k3.12.59_60.45-17.1
xen-kmp-default-debuginfo-4.5.3_08_k3.12.59_60.45-17.1
xen-libs-32bit-4.5.3_08-17.1
xen-libs-4.5.3_08-17.1
xen-libs-debuginfo-32bit-4.5.3_08-17.1
xen-libs-debuginfo-4.5.3_08-17.1

References:

https://www.suse.com/security/cve/CVE-2014-3672.html
https://www.suse.com/security/cve/CVE-2016-3158.html
https://www.suse.com/security/cve/CVE-2016-3159.html
https://www.suse.com/security/cve/CVE-2016-3710.html
https://www.suse.com/security/cve/CVE-2016-3960.html
https://www.suse.com/security/cve/CVE-2016-4001.html
https://www.suse.com/security/cve/CVE-2016-4002.html
https://www.suse.com/security/cve/CVE-2016-4020.html
https://www.suse.com/security/cve/CVE-2016-4037.html
https://www.suse.com/security/cve/CVE-2016-4439.html
https://www.suse.com/security/cve/CVE-2016-4441.html
https://www.suse.com/security/cve/CVE-2016-4453.html
https://www.suse.com/security/cve/CVE-2016-4454.html
https://www.suse.com/security/cve/CVE-2016-4952.html
https://www.suse.com/security/cve/CVE-2016-4962.html
https://www.suse.com/security/cve/CVE-2016-4963.html
https://www.suse.com/security/cve/CVE-2016-5105.html
https://www.suse.com/security/cve/CVE-2016-5106.html
https://www.suse.com/security/cve/CVE-2016-5107.html
https://www.suse.com/security/cve/CVE-2016-5126.html
https://www.suse.com/security/cve/CVE-2016-5238.html
https://www.suse.com/security/cve/CVE-2016-5337.html
https://www.suse.com/security/cve/CVE-2016-5338.html
https://www.suse.com/security/cve/CVE-2016-5403.html
https://www.suse.com/security/cve/CVE-2016-6258.html
https://www.suse.com/security/cve/CVE-2016-6259.html
https://www.suse.com/security/cve/CVE-2016-6351.html
https://bugzilla.suse.com/900418
https://bugzilla.suse.com/949889
https://bugzilla.suse.com/953339
https://bugzilla.suse.com/953362
https://bugzilla.suse.com/953518
https://bugzilla.suse.com/954872
https://bugzilla.suse.com/957986
https://bugzilla.suse.com/958848
https://bugzilla.suse.com/961600
https://bugzilla.suse.com/963161
https://bugzilla.suse.com/964427
https://bugzilla.suse.com/973188
https://bugzilla.suse.com/973631
https://bugzilla.suse.com/974038
https://bugzilla.suse.com/975130
https://bugzilla.suse.com/975138
https://bugzilla.suse.com/975907
https://bugzilla.suse.com/976058
https://bugzilla.suse.com/976111
https://bugzilla.suse.com/978164
https://bugzilla.suse.com/978295
https://bugzilla.suse.com/978413
https://bugzilla.suse.com/979620
https://bugzilla.suse.com/979670
https://bugzilla.suse.com/980716
https://bugzilla.suse.com/980724
https://bugzilla.suse.com/981264
https://bugzilla.suse.com/981276
https://bugzilla.suse.com/982024
https://bugzilla.suse.com/982025
https://bugzilla.suse.com/982026
https://bugzilla.suse.com/982224
https://bugzilla.suse.com/982225
https://bugzilla.suse.com/982286
https://bugzilla.suse.com/982695
https://bugzilla.suse.com/982960
https://bugzilla.suse.com/983973
https://bugzilla.suse.com/983984
https://bugzilla.suse.com/984981
https://bugzilla.suse.com/985503
https://bugzilla.suse.com/986586
https://bugzilla.suse.com/988675
https://bugzilla.suse.com/988676
https://bugzilla.suse.com/990843
https://bugzilla.suse.com/990923

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