https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=5367
Summary: VNC dissector does not properly dissect multi-segment
VNC server-to-client messages (such as framebuffer
updates)
Product: Wireshark
Version: SVN
Platform: Other
OS/Version: All
Status: NEW
Severity: Major
Priority: Low
Component: Wireshark
AssignedTo: wireshark-bugs@xxxxxxxxxxxxx
ReportedBy: mykaul@xxxxxxxxx
Build Information:
r34759.
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There's more than one bug here.
First, in Hextile encoding, it does not correctly parse it - there are 16x16
tiles that need to be encoded - it seems to encode only one.
However, even if I fix it, it won't help. Although there seems to be an effort
to return needed bytes to complete the dissection back to the caller and up the
chain, it does it wrongly - as it already dissected some of the data (instead
of accumulating a complete PDU before dissecting) and it does not save state -
so it start to dissect a new PDU every packet.
The code is a bit too messy for an easy fix (at least for me).
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