The host is installed with Apple Mac OS X 10.6 through 10.6.8 or Mac OS X Lion 10.7 through 10.7.5 and is prone to remote code execution vulnerability. The flaw is present in the Integer underflow in the cli_scanpe function in pe.c in ClamAV before 0.97.8, which fails to handle a skewed offset larger than the size of the PE section in a UPX packed executable, which triggers an out-of-bounds read. Successful exploitation allows remote attackers to cause a denial of service (crash).