Heartbleed May Reduce the Tor Network Capacity
The OpenSSL security flaw known as Heartbleed has been one of the most influential web security issues in recent history. The flaw may now affect the Tor network, the popular secure networking service, thereby reducing its total operating capacity. Nodes that are affected by Heartbleed could cause a compromise within Tor, allowing an attacker to view information that relates directly to Tor. One of the initial developers of Tor, Roger Dingledine, has suggested that the nodes that are affected by Heartbleed be kicked off of the secure network. If this suggestion is implemented, Tor would lose roughly 12 percent of its exit and guard capacity.
As of now, no action has been taken to remove the Tor nodes that are affected by Heartbleed.
Source: the Guardian