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[security-announce] SUSE-SU-2017:2450-1: important: Security update for xen
SUSE Security Update: Security update for xen

Announcement ID: SUSE-SU-2017:2450-1
Rating: important
References: #1027519 #1032598 #1037413 #1046637 #1047675
#1048920 #1049578 #1051787 #1051788 #1052686
#1056278 #1056281 #1056282
Cross-References: CVE-2017-10664 CVE-2017-10806 CVE-2017-11334
CVE-2017-11434 CVE-2017-12135 CVE-2017-12137
CVE-2017-12855 CVE-2017-14316 CVE-2017-14317
Affected Products:
SUSE Linux Enterprise Software Development Kit 11-SP4
SUSE Linux Enterprise Server 11-SP4
SUSE Linux Enterprise Debuginfo 11-SP4

An update that solves 10 vulnerabilities and has three
fixes is now available.


This update for xen 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-2017-11334: The address_space_write_continue function in exec.c
allowed local guest OS privileged users to cause a denial of service
(out-of-bounds access and guest instance crash) by leveraging use of
qemu_map_ram_ptr to access guest ram block area (bsc#1048920).
- 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-2017-10806: Stack-based buffer overflow in hw/usb/redirect.c allowed
local guest OS users to cause a denial of service via vectors related to
logging debug messages (bsc#1047675).
- 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, bsc#1052686).
- CVE-2017-14316: Missing bound check in function `alloc_heap_pages` for
an internal array allowed attackers using crafted hypercalls to execute
arbitrary code within Xen (XSA-231, bsc#1056278)
- CVE-2017-14317: A race in cxenstored may have cause a double-free
allowind for DoS of the xenstored daemon (XSA-233, bsc#1056281).
- CVE-2017-14319: An error while handling grant mappings allowed malicious
or buggy x86 PV guest to escalate its privileges or crash the hypervisor
(XSA-234, bsc#1056282).

This non-security issue was fixed:

- bsc#1032598: Prevent removal of NVME devices
- bsc#1037413: Support for newer intel cpu's, mwait-idle driver and skylake

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 11-SP4:

zypper in -t patch sdksp4-xen-13281=1

- SUSE Linux Enterprise Server 11-SP4:

zypper in -t patch slessp4-xen-13281=1

- SUSE Linux Enterprise Debuginfo 11-SP4:

zypper in -t patch dbgsp4-xen-13281=1

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

Package List:

- SUSE Linux Enterprise Software Development Kit 11-SP4 (i586 x86_64):


- SUSE Linux Enterprise Server 11-SP4 (i586 x86_64):


- SUSE Linux Enterprise Server 11-SP4 (x86_64):


- SUSE Linux Enterprise Server 11-SP4 (i586):


- SUSE Linux Enterprise Debuginfo 11-SP4 (i586 x86_64):



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