diff -up mutt/copy.c.cve-2014-0467 mutt/copy.c
--- mutt/copy.c.cve-2014-0467	2009-12-14 19:24:59.000000000 +0100
+++ mutt/copy.c	2014-03-13 10:29:13.844051152 +0100
@@ -254,6 +254,7 @@ mutt_copy_hdr (FILE *in, FILE *out, LOFF
     {
       if (!address_header_decode (&this_one))
 	rfc2047_decode (&this_one);
+	this_one_len = mutt_strlen (this_one);
     }
     
     if (!headers[x])