Wireshark-bugs: [Wireshark-bugs] [Bug 1125] New: Not decoding SNMP trap agent address if data le

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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Tue, 26 Sep 2006 20:59:51 +0000 (GMT)
http://bugs.wireshark.org/bugzilla/show_bug.cgi?id=1125

           Summary: Not decoding SNMP trap agent address if data length is
                    not equal to 4
           Product: Wireshark
           Version: 0.99.3
          Platform: PC
        OS/Version: Windows XP
            Status: NEW
          Severity: Normal
          Priority: Medium
         Component: Wireshark
        AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
        ReportedBy: k.pause@xxxxxxxxxxx


Build Information:
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If a SNMP agent sends a SNMPv1 trap, and sets the trap agent address to a IPv6
addresses, the first two bytes of the agent address field will be 0410.  The
ASN.1 guidelines indicate that the second byte corresponds to the length of the
address, which in this case is 16 (10 in hex) bytes.  It looks like the
dissector is looking at the data length and throwing an error if it isn't 4.

I can provide a pcap file with such a trap if necessary.


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