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Category:   Application (Generic)  >   Xen Vendors:   Xen Project
Xen ARM GIC Logging Rate Limit Error Lets Local Users on a Guest System Deny Service
SecurityTracker Alert ID:  1031663
SecurityTracker URL:  http://securitytracker.com/id/1031663
CVE Reference:   CVE-2015-1563   (Links to External Site)
Updated:  Feb 9 2015
Original Entry Date:  Jan 29 2015
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.4 and later
Description:   A vulnerability was reported in Xen. A local user on a guest system can cause denial of service conditions on the host system.

On ARM-based systems, the GIC distributor virtualization code does not limit guest-triggered logging on the hypervisor. A local user on a guest system can cause excessive logging to the hypervisor to cause denial of service conditions on the host system.

x86 systems are not affected.

Julien Grall reported this vulnerability.

Impact:   A local user on the guest system can cause denial of service conditions on the target host system.
Solution:   The vendor has issued a fix (xsa118-4.4.patch).

The vendor's advisory is available at:

http://xenbits.xen.org/xsa/advisory-118.html

Vendor URL:  xenbits.xen.org/xsa/advisory-118.html (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any)

Message History:   None.


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