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Category:   Application (Generic)  >   Xen Vendors:   Xen Project
Xen XEN_DOMCTL_gettscinfo Initialization Flaw Lets Local Guest Users Obtain Potentially Sensitive Information from Other Domains
SecurityTracker Alert ID:  1032158
SecurityTracker URL:  http://securitytracker.com/id/1032158
CVE Reference:   CVE-2015-3340   (Links to External Site)
Updated:  Apr 22 2015
Original Entry Date:  Apr 20 2015
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.0.x and later
Description:   A vulnerability was reported in Xen. A local user on a guest system can access potentially sensitive information from the hypervisor or other guest systems on the target system.

A local user on a guest system that has privilege over another guest can exploit a memory initialization error in XEN_DOMCTL_gettscinfo() to obtain potentially sensitive information from system memory.

Only x86 systems are affected.

ARM systems are not affected.

Jan Beulich of SUSE reported this vulnerability.

Impact:   A local user on a guest system can access potentially sensitive information from the hypervisor or other guest systems on the target system.
Solution:   The vendor has issued a fix (xsa132.patch, xsa132-4.2.patch).

The vendor's advisory is available at:

http://xenbits.xen.org/xsa/advisory-132.html

Vendor URL:  xenbits.xen.org/xsa/advisory-132.html (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any)

Message History:   None.


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