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Category:   Application (Generic)  >   Xen Vendors:   Xen Project
Xen 32-bit ELF Symbol Table Loading Error Lets Local Users on a Guest System Obtain Potentially Sensitive Information from the Host System
SecurityTracker Alert ID:  1037343
SecurityTracker URL:  http://securitytracker.com/id/1037343
CVE Reference:   CVE-2016-9384   (Links to External Site)
Date:  Nov 25 2016
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4.7.x
Description:   A vulnerability was reported in Xen. A local user on the guest system can obtain potentially sensitive information from the host system.

The system does not properly clear unused data portions when loading 32-bit ELF symbol tables. A local unprivileged user the the guest system can obtain potentially sensitive information from the host system.

x86 HVM guests are not affected when loading the guest with hvmloader.

Roger Pau Monne of Citrix reported this vulnerability.

Impact:   A local user on the guest system can obtain potentially sensitive information from the host system.
Solution:   The vendor has issued a fix (xsa194.patch).

The vendor advisory is available at:

http://xenbits.xen.org/xsa/advisory-194.html

Vendor URL:  xenbits.xen.org/xsa/advisory-194.html (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any)

Message History:   None.


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