Set bug panic meters to 'important'
By John Leyden 30th July 2009
Intel has warned that some of its motherboards contain a flaw in their BIOS setup that creates a privilege escalation vulnerability. As a result of the security bug, users already logged in as administrators could change code running in System Management Mode. SMM is a privileged operating environment that operates outside of operating system control, creating a possible mechanism (at least in theory) for mounting rootkit-style attacks on vulnerable systems. Exploiting the bug would probably require physical access to affected systems, a fair amount of skill and not a little luck in locating a vulnerable box. Desktop and server systems are both potentially affected by the bug, described by Intel as "important", so the flaw still merits close attention. BIOS updates designed to mitigate against attack are available for vulnerable Intel motherboards, as explained in an advisory by the chip giant issued on Wednesday.
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