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TITLE:
Tor Two Weaknesses

SECUNIA ADVISORY ID:
SA33025

VERIFY ADVISORY:
http://secunia.com/advisories/33025/

CRITICAL:
Not critical

IMPACT:
Security Bypass, Privilege escalation

WHERE:
>From remote

SOFTWARE:
Tor 0.2.0.x
http://secunia.com/advisories/product/20669/

DESCRIPTION:
Two weaknesses have been reported in Tor, which can be exploited by
malicious, local users to potentially perform certain actions with
escalated privileges or by malicious people to bypass certain
security restrictions.

1) The application does not properly drop privileges to the primary
groups of the user specified via the "User" parameter. This may
result in the tor process running with higher privileges than
intended.

Note: This may affect UNIX like operating systems only.

2) The "ClientDNSRejectInternalAddresses" configuration option is not
always enforced, which weakens the security and could open a vector
for further attacks.

SOLUTION:
Update to version 0.2.0.32.
https://www.torproject.org/download.html

PROVIDED AND/OR DISCOVERED BY:
1) Theo de Raadt
2) rovv

ORIGINAL ADVISORY:
http://blog.torproject.org/blog/tor-0.2.0.32-released

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