https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7046
--- Comment #12 from Aditya Ambadkar <arambadk@xxxxxxxx> 2012-08-08 10:45:11 PDT ---
(In reply to comment #11)
Fix is under fuzz test
Something that we noted which is related mostly to fix for
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5013. Code defines only one
parameter bfd in dissect_tlv and four parameters bfd1, bfd2, bfd3 and bfd4 in
dissect_tlv_fec. Interesting enough only the first one (bfd and bfd1) are used
in the function dissect_subtlv_interface_parameters.
Here LSP Ping, MPLS ping, BFD1..4 are bitmasks representing different CV types.
http://tools.ietf.org/html/rfc5085#section-4
http://tools.ietf.org/html/rfc5885#section-3
The dissect_subtlv_interface_parameters is missing the handling of BFD 2..4.
For the crash patch, we decided to add the bfd2..4 in dissect_tlc function(in
the diff). We plan to open a separate bug to fix
dissect_subtlv_interface_parameters to make it handle BFD2..4. (Thanks to Arun
Arunachalam for this analysis)
> (In reply to comment #9)
> > Aditya, any update? This overrun managed to manifest itself as a crash for at
> > least one user.
>
> Just an update on the situation. I have a proposed fix for the issue, I am
> working with a senior engineer to make sure we do the right thing.
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