Wireshark-bugs: [Wireshark-bugs] [Bug 11933] New: smb2_info_t structure isn't always passed down
Date: Sat, 26 Dec 2015 22:48:17 +0000
Bug ID 11933
Summary smb2_info_t structure isn't always passed down
Product Wireshark
Version Git
Hardware All
OS All
Status CONFIRMED
Severity Normal
Priority Low
Component Dissection engine (libwireshark)
Assignee bugzilla-admin@wireshark.org
Reporter mmann78@netscape.net
CC metze@samba.org

Build Information:
Paste the COMPLETE build information from "Help->About Wireshark", "wireshark
-v", or "tshark -v".
--
While investigating bug 11931, I noticed that I couldn't duplicate on master.
The reason is that the smb2_info_t structure isn't passed down to the MS-WSP
dissector.  The functionality of dissect_smb2_FSCTL_PIPE_TRANSCEIVE() changed
with Ie6f28fd7, which ends up calling heuristic dissection with no "dissector
data".  Since MS-WSP requires dissector data (smb2_info_t structure), it won't
hit the crash found by the fuzzbot.
I think the solution may be as simple as passing the dissector data through the
heuristic dissection attempt, but I'll let those more familiar with the
protocols ponder it.


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