Stack-based buffer overflow in the
ClientConnection::NegotiateProtocolVersion function in
vncviewer/ClientConnection.cpp in vncviewer for UltraVNC 1.0.2 and
1.0.4 before 01252008, when in LISTENING mode or when using the DSM
plugin, allows remote attackers to execute arbitrary code or cause a
denial of service (crash) via a modified size value.
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