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Category:   Application (Generic)  >   Xen Vendors:   Xen Project
Xen Null Pointer Dereference in HVMOP_inject_msi Lets Local Guest Users Deny Service on the Host System
SecurityTracker Alert ID:  1030322
SecurityTracker URL:  http://securitytracker.com/id/1030322
CVE Reference:   CVE-2014-3967, CVE-2014-3968   (Links to External Site)
Updated:  Jun 5 2014
Original Entry Date:  Jun 3 2014
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.2 and later
Description:   Two vulnerabilities were reported in Xen. A local user on the guest system can cause denial of service conditions on the host system.

A local administrative user on the guest operating system can invoke HVMOP_inject_msi to trigger a null pointer dereference and cause the host system to crash [CVE-2014-3967].

Some error logging is not subject to rate limiting, allowing a local user on the guest operating system to deny service by creating a large number of log entries [CVE-2014-3968].

Jan Beulich reported this vulnerability.

Impact:   A local administrative user on the guest system can cause denial of service conditions on the host system.
Solution:   The vendor has issued a fix (xsa96.patch).
Vendor URL:  www.xen.org/ (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any)

Message History:   None.


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