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Category:   Application (Generic)  >   Xen Vendors:   Xen Project
Xen DOMCTL Operations Let Local Guest System Users Deny Service on the Host System
SecurityTracker Alert ID:  1031997
SecurityTracker URL:  http://securitytracker.com/id/1031997
CVE Reference:   CVE-2015-2751   (Links to External Site)
Date:  Apr 1 2015
Impact:   Denial of service via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.3 and later
Description:   A vulnerability was reported in Xen. A local user on the guest system can cause denial of service conditions on the target host system.

Some domctl operations are incorrectly declared as disaggregation safe. A local user on the guest system can invoke certain operations to lockup the host system.

Andrew Cooper of Citrix 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 (xsa127-4.x.patch).

The vendor's advisory is available at:

http://xenbits.xen.org/xsa/advisory-127.html

Vendor URL:  xenbits.xen.org/xsa/advisory-127.html (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any)

Message History:   None.


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