CVE-2007-4840: Improper Input Validation

PHP 5.2.4 and earlier allows context-dependent attackers to cause a denial of service application crash via 1 a long string in the outcharset parameter to the iconv function; or a long string in the charset parameter to the 2 iconvmimedecodeheaders, 3 iconvmimedecode, or 4 iconvstrlen function...