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Category:   Application (Generic)  >   Xen Vendors:   Xen Project
Xen ARM Guest Loading Bugs Let Local Users Deny Service
SecurityTracker Alert ID:  1030252
SecurityTracker URL:  http://securitytracker.com/id/1030252
CVE Reference:   CVE-2014-3714, CVE-2014-3715, CVE-2014-3716, CVE-2014-3717   (Links to External Site)
Date:  May 16 2014
Impact:   Denial of service via local system, Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.4 and later
Description:   Several vulnerabilities were reported in Xen. A local user can cause denial of service conditions. A local user can obtain potentially sensitive information.

When loading a 32-bit ARM guest kernel, a local user can trigger a buffer overflow [CVE-2014-3714].

When validating a 32-bit guest kernel for an appended device tree blob, a local user can trigger a buffer overflow [CVE-2014-3715].

When evaluating a device tree blob header, a local user can trigger an alignment flaw [CVE-2014-3716].

When loading a 64-bit ARM guest kernel, a local user can trigger a load address buffer overflow [CVE-2014-3717].

These vulnerabilities can be exploited to obtain potentially sensitive information from the toolstack address space or cause the toolstack process to crash.

Thomas Leonard reported these vulnerabilities.

Impact:   A local user with privileges to load a guest kernel can cause the toolstack process to crash.

A local user with privileges to load a guest kernel can obtain potentially sensitive information from the toolstack address space.

Solution:   The vendor has issued a fix (xsa95.patch).
Vendor URL:  www.xen.org/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Any)

Message History:   None.


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