Wireshark · Ethereal-dev: [Ethereal-dev] [DCE RPC] Incorrect dissection with CVS version 20040603153321

[Jean-Baptiste Marchand <Jean-Baptiste.Marchand@xxxxxx>]

Hello,

it seems that there is a dissection problem with a current version of
the DCE RPC dissector.

The first attached capture (epm1_anon.cap) contains 6 frames, 2 two TCP segments
(SYN-ACK, ACK) and 4 DCE RPC PDUs. The last two DCE RPC PDUs are not
properly dissected as EPM operations.

The second attached capture (epm2_anon.cap) is identical to the first one,
except that the first TCP segment has been removed. The last two DCE RPC
PDUs are properly dissected as EPM operations.

The only difference is that in the first case, we see a SYN-ACK TCP
segment and thus, this might be something related to TCP conversations?

PS: attached traces have been anonymized with ipsumdump
(http://www.icir.org/kohler/ipsumdump/), thus IP addresses are different
in the traces but they were both generated from the same original trace.


Jean-Baptiste Marchand
-- 
Jean-Baptiste.Marchand@xxxxxx
HSC - http://www.hsc.fr/

Attachment: epm1_anon.cap
Description: Binary data

Attachment: epm2_anon.cap
Description: Binary data