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Insecure Library Loading
Not critical

Tor Circuit Generation Entry Guard Check Weakness

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Release Date:  2007-05-28    Last Update:  2007-06-13    Views:  12,025

Secunia Advisory SA25415

Where:

From remote

Impact:

Exposure of sensitive information

Solution Status:

Vendor Patch

CVE Reference(s):

Description


lodger has reported a weakness in Tor, which potentially can be exploited by malicious people to expose sensitive information.

When building a circuit, Tor checks if an entry guard is exactly the same as an exit guard, but fails to check if they are also part of the same family. This may weaken the Tor security concept and could make it easier to launch certain attacks.

The weakness is reported in versions prior to 0.1.2.14.


Solution:
Update to version 0.1.2.14.

Provided and/or discovered by:
lodger

Original Advisory:
http://archives.seul.org/or/announce/May-2007/msg00000.html

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Tor Circuit Generation Entry Guard Check Weakness

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