Wireshark-bugs: [Wireshark-bugs] [Bug 4880] New: packet-bssgp.c should treat packets with a too
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Tue, 15 Jun 2010 00:01:46 -0700 (PDT)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=4880

           Summary: packet-bssgp.c should treat packets with a too short
                    LLC payload as malformed
           Product: Wireshark
           Version: SVN
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: Major
          Priority: Low
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: zecke@xxxxxxxxxxx


Build Information:
Paste the COMPLETE build information from "Help->About Wireshark", "wireshark
-v", or "tshark -v".
--
At OpenBSC (http://openbsc.gnumonks.org) we have recently started to implement
the GPRS stack and had some issues as we have used a too small length for the
recvfrom call and have truncated the UDP message. It took a while to find as
wireshark didn't report anything as malformed...


Inside the BSSGP message can be a LLC-PDU InformationElement (IE) and this
contains a value_length. Now it is okay for it to be zero. If it is not zero
wireshark should check if the LLC payload is inside the packet or not.

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