Wireshark-bugs: [Wireshark-bugs] [Bug 6741] GSM-MAP TCAP error for process unstructuredSS-Reques
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Mon, 16 Jan 2012 07:52:53 -0800 (PST)
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6741

--- Comment #2 from Anders Broman <anders.broman@xxxxxxxxxxxx> 2012-01-16 07:52:51 PST ---
Hi,
In the first trace the problem is with MAP-DialoguePDU Wireshark uses this
asn1 specification:

MAP-OpenInfo ::= SEQUENCE {
    destinationReference    [0] AddressString    OPTIONAL,
    originationReference    [1] AddressString    OPTIONAL,
    ...,
    extensionContainer    ExtensionContainer    OPTIONAL
    -- extensionContainer must not be used in version 2
    }

If you change the BER preferences to "Show internal BER encapsulation tokens"
you can see tahat in your trace there is Tag 1
...0 0001 = Tag: 1
Length: 7
originationReference: 919120140450f3

And Tag 2
...0 0010 = Tag: 2
Length: 7
BER Error: This field lies beyond the end of the known sequence definition.
919120141420f6

As Tag 2 is not present in the ASN1 description abowe.
Could it be that the tags should have been 0 and 1 instead?
Tag 2 looks like a number too.

Regards
Anders

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