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Category:   Application (Generic)  >   Xen Vendors:   Xen Project
Xen x86 Emulator Flaw Lets Local Users Obtain Sensitive Information and Cause Denial of Service Conditions
SecurityTracker Alert ID:  1031903
SecurityTracker URL:  http://securitytracker.com/id/1031903
CVE Reference:   CVE-2015-2151   (Links to External Site)
Date:  Mar 11 2015
Impact:   Denial of service via local system, Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.2.x and later
Description:   Several vulnerabilities were reported in Xen. A local user on a guest system can cause denial of service conditions on the target host system. A local user on a guest system can access potentially sensitive information about other guest systems.

A local user on a guest system can exploit an x86 emulation flaw to trigger a pointer corruption and read potentially sensitive information about other guest systems or cause the host system to crash.

It may also be possible to execute arbitrary code and gain elevated privileges.

x86 systems are affected. ARM systems are not affected.

Felix Wilhelm of ERNW GmbH reported this vulnerability.

Impact:   A local user on a guest system can cause denial of service conditions on the target host system.

A local user on a guest system can access potentially sensitive information about other guest systems.

Solution:   The vendor has issued a fix (xsa123.patch, xsa123-4.3-4.2.patch).

The vendor's advisory is available at:

http://xenbits.xen.org/xsa/advisory-123.html

Vendor URL:  xenbits.xen.org/xsa/advisory-123.html (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any)

Message History:   None.


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