[tor-bugs] #2694 [Tor bundles/installation]: Local privilege escalation vulnerability in our rpms

Tor Bug Tracker & Wiki torproject-admin at torproject.org
Sun Apr 17 06:58:53 UTC 2011


#2694: Local privilege escalation vulnerability in our rpms
--------------------------------------+-------------------------------------
 Reporter:  arma                      |          Owner:  erinn
     Type:  defect                    |         Status:  new  
 Priority:  normal                    |      Milestone:       
Component:  Tor bundles/installation  |        Version:       
 Keywords:                            |         Parent:       
   Points:                            |   Actualpoints:       
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Comment(by rransom):

 Replying to [ticket:2694 arma]:
 > In tor.spec.in we do
 {{{
 # Older tor RPMS used a different username for the tor daemon.
 # Make sure the runtime data have the right ownership.
 %__chown -R %{toruser}.%{torgroup} %{_localstatedir}/{lib,log,run}/%{name}
 }}}
 >
 > That -R will let an attacker who gets control of the _tor user get
 control of other files on the system.

 Not on any system with a recent version of GNU coreutils.

 > The fix is to remove the -R from that line.

 Or to add the -P option specified in POSIX 2001.  (This is the default
 behaviour of chown in GNU coreutils 8.5.)

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/2694#comment:2>
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