Patch by Hilko Bengen <bengen@debian.org> for dsniff >= 2.4b1, to avoid a
possible DoS opportunity in the Tabular Data Stream protocol handler. For
further information, please have a look to the Debian bug ID #609988 and
#712648.
--- dsniff-2.4/decode_tds.c 2013-12-19 23:36:26.000000000 +0100
+++ dsniff-2.4/decode_tds.c.tds_decoder 2013-12-19 23:38:01.000000000 +0100
@@ -144,6 +144,11 @@
len > sizeof(*th) && len >= ntohs(th->size);
buf += ntohs(th->size), len -= ntohs(th->size)) {
+ if (th->size != 8) {
+ /* wrong header length */
+ break;
+ }
+
if (th->type == 2) {
/* Version 4.x, 5.0 */
if (len < sizeof(*th) + sizeof(*tl))