CVE-2010-4699

The iconv_mime_decode_headers function in the Iconv extension in PHP before
5.3.4 does not properly handle encodings that are unrecognized by the iconv
and mbstring (aka Multibyte String) implementations, which allows remote
attackers to trigger an incomplete output array, and possibly bypass spam
detection or have unspecified other impact, via a crafted Subject header in
an e-mail message, as demonstrated by the ks_c_5601-1987 character set.

Bugs

• <http://bugs.php.net/52941&gt;
• <https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2010-4699&gt;

Notes