| Description: | Summary:
The remote host is missing an update for the 'Xen'
package(s) announced via the referenced advisory.
Vulnerability Insight:
The SUSE Linux Enterprise Server 11 Service Pack 3 Xen
hypervisor and toolset has been updated to 4.2.4 to fix
various bugs and security issues:
The following security issues have been addressed:
*
XSA-60: CVE-2013-2212: The vmx_set_uc_mode function
in Xen 3.3 through 4.3, when disabling caches, allows
local HVM guests with access to memory mapped I/O regions
to cause a denial of service (CPU consumption and possibly
hypervisor or guest kernel panic) via a crafted GFN range.
(bnc#831120)
*
XSA-80: CVE-2013-6400: Xen 4.2.x and 4.3.x, when
using Intel VT-d and a PCI device has been assigned, does
not clear the flag that suppresses IOMMU TLB flushes when
unspecified errors occur, which causes the TLB entries to
not be flushed and allows local guest administrators to
cause a denial of service (host crash) or gain privileges
via unspecified vectors. (bnc#853048)
*
XSA-82: CVE-2013-6885: The microcode on AMD 16h 00h
through 0Fh processors does not properly handle the
interaction between locked instructions and write-combined
memory types, which allows local users to cause a denial of
service (system hang) via a crafted application, aka the
errata 793 issue. (bnc#853049)
*
XSA-83: CVE-2014-1642: The IRQ setup in Xen 4.2.x and
4.3.x, when using device passthrough and configured to
support a large number of CPUs, frees certain memory that
may still be intended for use, which allows local guest
administrators to cause a denial of service (memory
corruption and hypervisor crash) and possibly execute
arbitrary code via vectors related to an out-of-memory
error that triggers a (1) use-after-free or (2) double
free. (bnc#860092)
*
XSA-84: CVE-2014-1891: The FLASK_{GET, SET}BOOL,
FLASK_USER and FLASK_CONTEXT_TO_SID suboperations of the
flask hypercall are vulnerable to an integer overflow on
the input size. The hypercalls attempt to allocate a buffer
which is 1 larger than this size and is therefore
vulnerable to integer overflow and an attempt to allocate
then access a zero byte buffer. (bnc#860163)
*
XSA-84: CVE-2014-1892 CVE-2014-1893: Xen 3.3 through
4.1, while not affected by the above overflow, have a
different overflow issue on FLASK_{GET, SET}BOOL and expose
unreasonably large memory allocation to arbitrary guests.
(bnc#860163)
*
XSA-84: CVE-2014-1894: Xen 3.2 (and presumably
earlier) exhibit both problems with the overflow issue
being present for more than just the suboperations listed
above. (bnc#860163)
*
XSA-85: CVE-2014-1895: The FLASK_AVC_CACHE ...
Description truncated, please see the referenced URL(s) for more information.
Affected Software/OS:
Xen on SUSE Linux Enterprise Server 11 SP3
Solution:
Please install the updated package(s).
CVSS Score:
8.3
CVSS Vector:
AV:A/AC:L/Au:N/C:C/I:C/A:C
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