CVE-2007-5633 Information

Description

Speedfan.sys in Alfredo Milani Comparetti SpeedFan 4.33 when used on Microsoft Windows Vista x64 allows local users to read or write arbitrary MSRs and gain privileges and load unsigned drivers via the (1) IOCTL_RDMSR 0x9C402438 and (2) IOCTL_WRMSR 0x9C40243C IOCTLs to \Device\speedfan as demonstrated by an IOCTL_WRMSR action on MSR_LSTAR.

Reference

http://osvdb.org/41842 http://secunia.com/advisories/27312 http://www.bugtrack.almico.com/view.php?id=987 http://www.reversemode.com/index.php?option=com_content&task=view&id=42&Itemid=1 http://www.securityfocus.com/bid/26123 https://exchange.xforce.ibmcloud.com/vulnerabilities/37298