When "http://" is in front of a V3 link, Tor browser will search the entire link on duckduckgo,
copy and paste the link below straight into the Tor browser URL field and click GO.
If the user is trying to keep their hidden service secret, this bug will cause duckduckgo to see the unencrypted link, allowing attackers to easily find their hidden service if DuckDuckGo is compromised.
http://ozmh2zkwx5cjuzopui64csb5ertcooi5vya6c2gm4e3vcvf2c2qvjiyd.onion
Tor Browser 7.5a5
Trac: Username: Dbryrtfbcbhgf
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information
Child items ...
Show closed items
Linked items 0
Link issues together to show that they're related.
Learn more.
Trac: Username: Dbryrtfbcbhgf Summary: When "http://" is in front of a V3 link, Tor browser will search the text after "http://" on duckduckgo to When "http://" is in front of a V3 link, Tor browser will search the text after "http://" on duckduckgo or any default search engine you use.
In the first part of the video when I paste the link into the url bar there is a popup right under the url bar that says the link url and -- Search with duckduckgo. This occurs on 00:01 in the video.
and it does not seam to occur on 7.0.6
I can Confirm that that option is disabled and I was able to capture another video reproducing the bug while the option is DISABLED, I captured my old Tor Browser data file. Here it is, both the torbrowser-data and the new video
https://www.expirebox.com/download/d9d3fe690a576051e0694686b46f8dc6.html
The odd thing is that the bug does not always occur.
Oh right I only understood the issue now, it's not about providing search suggestions but it would go to the DuckDuckGo search engine directly. Nice catch! This happened for 7.5a4 FWIW (BTW it happened for me sometimes when selecting the URL of some links in DDG and displacing it to a new tab, a DDG search would happen despite the URL having https://)
Oh right I only understood the issue now, it's not about providing search suggestions but it would go to the DuckDuckGo search engine directly. Nice catch! (BTW it happened for me sometimes when selecting some links and taking them to a new tab, a DDG search would happen despite the URL having https://)
Great, thanks cypherpunks for the confirmation that your were also able to reproduce the bug.
I would guess that this is partially a Trac issue. It's what arma said in comment:12. Trac puts a little icon in front of external links, and the icon is actually a span element that contains a zero-width space (U+200B). It's the presence of this invisible character that makes the browser go to a search engine.
If you copy the link and are very careful not to include the icon when you highlight, then it will work and not go to a search engine. Also if you right-click and Copy Link Location.
Try copying a link and pasting it into a Vim buffer. Vim will make the zero-width space visible and color it blue:
Trac puts a little icon in front of external links, and the icon is actually a span element that contains a zero-width space
Try pasting the highlighted stuff into the tor browser window directly. If it's a real http url, it will try to load. If it is not, it will do nothing.