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Xen VM Escape

Xen XSA-148(http://xenbits.xen.org/xsa/advisory-148.html) is the real VM Escape Vulnerability XSA-148 is public just now and it's a memory management logic vulnerability obviously. The bulletin means that a micious PV DomU could enable PS/RW flag of its PDE to read/write the 2M page. So, if a attacker prepare a page table at the 2M page, he could use the vulnerability to modify the PT. Finally, this vulnerability changes to a arbitrary machine memory read/write vulnerability. -- hikerell _______________________________________________ Sent through the Full Disclosure mailing list https://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: http://seclists.org/fulldisclosure/

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