Re: Dissector Bug in MBMS Bearer Event AVP

[Pascal Quantin <pascal () wireshark org>]

Hi Dincer,

Le mer. 4 mars 2020 à 18:16, Dincer Beken <dbeken () blackned de> a écrit :

> Hello all,
>
> I am using wireshark 3.0.6 and I am trying to decode the MB2c Diameter
> Protocol for LTE Multicast (eMBMS). In the capture in the attachement, when
> I want to sent the MBMS Bearer Event AVP in the Diameter MB2C
> GCS-Notification-Request message, i get an Dissector Error. It does not
> like what II put into the MBMS-Bearer-Event, no matter the value is.
>
> Could you tell me if that is a bug, or if the value is wrong? I have
> tried, 0x0, 0x1, 0x80, 0xFF etc.. all resulted in the parsing bug.
>
> The specification says the following:
>
>
>
> The error: is epan/proto.c:10950 failed assertion "hf->bitmask!=0"
> (Diameter.3gpp.mbms_bearer_event_spare).
Thanks for the report, I pushed a fix here:
https://code.wireshark.org/review/#/c/36274/

It will be included in the next Wireshark maintenance release.

Best regards,
Pascal.

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