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[Full-disclosure] Google Chrome 3.0.195.33 leaks DNS data queries outsitde of proxy if dns pre-fetching is enabled
- To: full-disclosure@xxxxxxxxxxxxxxxxx
- Subject: [Full-disclosure] Google Chrome 3.0.195.33 leaks DNS data queries outsitde of proxy if dns pre-fetching is enabled
- From: nixlists <nixmlists@xxxxxxxxx>
- Date: Mon, 14 Dec 2009 20:45:12 +0000
Google Chrome 3.0.195.33 has DNS pre-fetching feature enabled by
default. If a user is using Chrome with a proxy, the DNS queries must
go through the proxy by design, but with the DNS pre-fetching enabled
they are still sent to the system's configured DNS cache.
This seems also true for the SOCKS proxy in Chromium regardless of
whether DNS pre-fetching is enabled or not as shown here:
http://code.google.com/p/chromium/issues/detail?id=29914
I have not verified the SOCKS proxy issue.
This presents a serious risk for the users of the services such as
Tor, as their DNS data and the little anonymity they have with tor is
leaked outside and in the clear.
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