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Moderately critical

Skype URL Handling File Disclosure Vulnerability

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Release Date:  2006-05-19    Last Update:  2006-06-07    Views:  28,775

Secunia Advisory SA20154

Where:

From remote

Impact:

Security Bypass, Exposure of sensitive information

Solution Status:

Vendor Patch

CVE Reference(s):

Description


A vulnerability has been reported in Skype, which can be exploited by malicious people to bypass certain security restrictions and potentially disclose certain sensitive information.

The vulnerability is cause due to an error within the parsing of the parameters passed by the URI handler. This can be exploited to inject additional command line switches to the Skype client to initiate transfer of a file from one Skype user to another via a specially crafted Skype URL, without requiring the sender to explicitly consent the action.

Successful exploitation requires that the user follows a malicious Skype URL and that the recipient has previously authorised the sender.

The vulnerability has been reported in the following versions of Skype for Windows.
* Release 2.0.*.104 and prior
* Release 2.5.*.0 through 2.5.*.78


Solution:
Update to the fixed versions.

Further details available to Secunia VIM customers

Provided and/or discovered by:
The vendor credits Brett Moore of Security-Assessment.com Ltd.

Original Advisory:
Skype:
http://www.skype.com/security/skype-sb-2006-001.html

Security-Assessment.com:
http://www.security-assessment.com/Advisories/Skype_URI_Handling_Vulnerability.pdf

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: Skype URL Handling File Disclosure Vulnerability

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