CVE-2007-4783

The iconv_substr function in PHP 5.2.4 and earlier allows context-dependent
attackers to cause (1) a denial of service (application crash) via a long
string in the charset parameter, probably also requiring a long string in
the str parameter; or (2) a denial of service (temporary application hang)
via a long string in the str parameter. NOTE: this might not be a
vulnerability in most web server environments that support multiple
threads, unless these issues can be demonstrated for code execution.

Notes