The connection_edge_process_relay_cell function in or/relay.c in Tor
before 0.2.3.25 maintains circuits even if an unexpected SENDME cell
arrives, which might allow remote attackers to cause a denial of
service (memory consumption or excessive cell reception rate) or
bypass intended flow-control restrictions via a RELAY_COMMAND_SENDME
Note:References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MLIST:[oss-security] 20121126 Re: tor DoS via SENDME cells
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