OracleVM 3.0 : xen (OVMSA-2012-0040)

This script is Copyright (C) 2014-2017 Tenable Network Security, Inc.


Synopsis :

The remote OracleVM host is missing one or more security updates.

Description :

The remote OracleVM system is missing necessary patches to address
critical security updates :

- console: bounds check whenever changing the cursor due
to an escape code The device model used by fully
virtualised (HVM) domains, qemu, does not properly
handle escape VT100 sequences when emulating certain
devices with a virtual console backend. (CVE-2012-3515)

- xen: Don't BUG_ON PoD operations on a non-translated
guest. XENMEM_populate_physmap can be called with
invalid flags. By calling it with
MEMF_populate_on_demand flag set, a BUG can be triggered
if a translating paging mode is not being used.
(CVE-2012-3494)

- xen: prevent a 64 bit guest setting reserved bits in DR7
The upper 32 bits of this register are reserved and
should be written as zero. (CVE-2012-3494)

See also :

http://www.nessus.org/u?b6d6d187

Solution :

Update the affected xen / xen-devel / xen-tools packages.

Risk factor :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 5.3
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: OracleVM Local Security Checks

Nessus Plugin ID: 79483 ()

Bugtraq ID: 55400
55413

CVE ID: CVE-2012-3494
CVE-2012-3515

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