Wireshark-bugs: [Wireshark-bugs] [Bug 3986] New: some malformed OPC UA traffic causes wireshark
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Sun, 6 Sep 2009 20:41:30 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=3986

           Summary: some malformed OPC UA traffic causes wireshark to
                    "freeze"
           Product: Wireshark
           Version: unspecified
          Platform: Other
        OS/Version: Ubuntu
            Status: NEW
          Severity: Major
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: vieuxtech@xxxxxxxxx


Created an attachment (id=3614)
 --> (https://bugs.wireshark.org/bugzilla/attachment.cgi?id=3614)
pcap used to reproduce bug

Build Information:
Paste the COMPLETE build information from "Help->About Wireshark", "wireshark
-v", or "tshark -v".
--
Seems some malformed OPC UA traffic causes wireshark to "freeze",
though it recovers after a few minutes.


---------- Forwarded message ----------
Wireshark gets freezed for about two minutes when trying to decode a
malformed packet of OPCUA Service CallRequest.

There are two malformed CallRequest packets in the pcap, in which
the latter one cause the issue.

To reproduce:
 1. Load the pcap file
 2. Open "Decode as ..." dialog, select Transport source(12001) or
destination(12001) as "opcua", and press OK
 3. Wireshark gets freezed at the dialog for about 2 minutes, and then
show the packets as OpcUa.


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