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Test ID:1.3.6.1.4.1.25623.1.1.4.2017.2450.1
Category:SuSE Local Security Checks
Title:SUSE: Security Advisory (SUSE-SU-2017:2450-1)
Summary:The remote host is missing an update for the 'xen' package(s) announced via the SUSE-SU-2017:2450-1 advisory.
Description:Summary:
The remote host is missing an update for the 'xen' package(s) announced via the SUSE-SU-2017:2450-1 advisory.

Vulnerability Insight:
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

Affected Software/OS:
'xen' package(s) on SUSE Linux Enterprise Software Development Kit 11-SP4, SUSE Linux Enterprise Server 11-SP4, SUSE Linux Enterprise Debuginfo 11-SP4

Solution:
Please install the updated package(s).

CVSS Score:
7.2

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

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2017-10664
Common Vulnerability Exposure (CVE) ID: CVE-2017-10806
Common Vulnerability Exposure (CVE) ID: CVE-2017-11334
Common Vulnerability Exposure (CVE) ID: CVE-2017-11434
Common Vulnerability Exposure (CVE) ID: CVE-2017-12135
Common Vulnerability Exposure (CVE) ID: CVE-2017-12137
Common Vulnerability Exposure (CVE) ID: CVE-2017-12855
Common Vulnerability Exposure (CVE) ID: CVE-2017-14316
Common Vulnerability Exposure (CVE) ID: CVE-2017-14317
Common Vulnerability Exposure (CVE) ID: CVE-2017-14319
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