[tor-bugs] #2837 [Torbutton]: Torbutton's ‘banned ports’ make it detectable when off
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Sun Apr 3 07:42:22 UTC 2011
#2837: Torbutton's ‘banned ports’ make it detectable when off
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Reporter: rransom | Owner: mikeperry
Type: defect | Status: new
Priority: normal | Milestone:
Component: Torbutton | Version:
Keywords: | Parent:
Points: | Actualpoints:
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Torbutton leaves ports 8118, 8123, 9050, and 9051 in Firefox's ‘banned
ports’ list when it is disabled. A web server can use this fact to detect
Torbutton's presence, even in non-Tor mode, by telling a user's browser to
connect to it on multiple ports, including those ‘banned’ by Torbutton.
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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2837>
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