Apple Mac OS X Lion Kernel xnu Privilege Escalation
Posted by deepcore on April 12, 2014 – 3:17 pm
Apple Mac OS X Lion kernel xnu versions 1699.32.7 except 1699.24.8 NFS mount privilege escalation exploit. This exploit leverage a stack overflow vulnerability to escalate privileges. The vulnerable function nfs_convert_old_nfs_args does not verify the size of a user-provided argument before copying it to the stack. As a result by passing a large size, a local user can overwrite the stack with arbitrary content.
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