1 Fix for CVE-2014-4049

     2 Community bug:

     3 https://bugs.php.net/bug.php?id=67432

     4 Patch based on:

     5 https://github.com/php/php-src/commit/b34d7849ed90ced9345f8ea1c59bc8d101c18468

     6 Slightly modified from the above source as the context is slightly different.

     7 

     8 

     9 --- php-5.2.17/ext/standard/dns.c_orig	2010-01-03 01:23:27.000000000 -0800

    10 +++ php-5.2.17/ext/standard/dns.c	2014-10-17 11:12:46.117985578 -0700

    11 @@ -484,6 +484,10 @@

    12  				

    13  				while (ll < dlen) {

    14  					n = cp[ll];

    15 +					if ((ll + n) >= dlen) {

    16 +						    // Invalid chunk length, truncate

    17 +							n = dlen - (ll + 1);

    18 +				    }

    19  					memcpy(tp + ll , cp + ll + 1, n);

    20  					ll = ll + n + 1;

    21  				}