[tor-bugs] #24400 [Core Tor/Tor]: Seccomp filter incorrectly tries to act on strings, allowing sandbox bypass

Tor Bug Tracker & Wiki blackhole at torproject.org
Sun Nov 26 04:54:01 UTC 2017


#24400: Seccomp filter incorrectly tries to act on strings, allowing sandbox bypass
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 Reporter:  Sebastian     |          Owner:  (none)
     Type:  defect        |         Status:  new
 Priority:  Medium        |      Milestone:  Tor: 0.3.3.x-final
Component:  Core Tor/Tor  |        Version:
 Severity:  Normal        |     Resolution:
 Keywords:  sandbox       |  Actual Points:
Parent ID:                |         Points:
 Reviewer:                |        Sponsor:
--------------------------+------------------------------------

Comment (by cypherpunks):

 I think `cat $ hello.c` should probably be `$ cat hello.c` instead.

 Tested the demonstration files and they work. There is also a danger of
 thread concurrency bugs when trying to read memory in a filter context as
 well.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/24400#comment:1>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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