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Insecure Library Loading
Moderately critical

Tor Weakness and Multiple Vulnerabilities

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Release Date:  2006-05-25    Last Update:  2006-07-11    Views:  15,162

Secunia Advisory SA20277

Where:

From remote

Impact:

Spoofing, Exposure of sensitive information, DoS

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


Some vulnerabilities and a weakness have been reported in Tor, which can be exploited by malicious people to spoof log entries, disclose certain sensitive information, and cause a DoS (Denial of Service).

1) Input strings received from the network isn't properly sanitised before being displayed. This can potentially be exploited to spoof log entries via certain non-printable characters.

2) An unspecified error in the directory server can be exploited to cause a DoS.

3) Some integer overflow errors exists when adding elements to smartlists. This can potentially be exploited to cause a buffer overflow via malicious large inputs.

4) An error in which internal circuits are picked based on the circuits having useful exit nodes, can potentially reveal certain information via statistical attacks.

The vulnerabilities and weakness have been reported in versions prior to 0.1.1.20.

Note: Several other issues, which may be security related, have also been fixed.


Solution:
Update to version 0.1.1.20.

Further details available to Secunia VIM customers

Provided and/or discovered by:
1-3) Reported by vendor.
4) Lasse Overlier

Original Advisory:
http://tor.eff.org/cvs/tor/ChangeLog

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 Weakness and Multiple Vulnerabilities

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