CVE-2007-1103
Tor does not verify a node’s uptime and bandwidth advertisements, which allows remote attackers who operate a low resource node to make false claims of greater resources, which places the node into use for many circuits and compromises the anonymity of traffic sources and destinations.
Date published : 2007-02-26
http://www.cs.colorado.edu/department/publications/reports/docs/CU-CS-1025-07.pdf