Vulnerability Note VU#466428

Skype URI handler fails to properly parse parameters

Overview

A remote attacker could potentially retrieve files from Skype users running the Microsoft Windows version of the Skype software.

I. Description

Skype is an application that allows users to communicate with voice or messaging across the Internet or local area networks. Skype also features the ability for users to transfer files, send SMS messages, and send videos. In some circumstances, a Skype URL can be crafted that, if followed, initiates the transfer of a single named file to another Skype user.

Skype reports that this vulnerability only affects the Windows version of the software.

II. Impact

If a victim user connects to the specially-crafted Skype URL, an attacker could get any file he/she chooses from the victim's computer with the privileges of the user running Skype.

III. Solution

Upgrade to Skype 2.5, release 2.5.*.79 (or later) or Skype 2.0, release 2.0.*.105 (or later). More information can be found in Skype security bulletin SKYPE-SB/2006-001.

Systems Affected

Vendor	Status	Date Updated
Skype Technologies	Vulnerable	23-May-2006

References

http://secunia.com/advisories/20154/
http://www.skype.com/security/skype-sb-2006-001.html

Credit

This vulnerability was reported in Skype Security Bulletin 2006-001. Skype, in turn, credits Brett Moore of Security- Assessment.com Ltd. with discovery and reporting of this issue.

This document was written by Ryan Giobbi.

Other Information

Date Public	05/18/2006
Date First Published	06/06/2006 04:09:08 PM
Date Last Updated	06/07/2006
CERT Advisory
CVE-ID(s)	CVE-2006-2312
NVD-ID(s)	CVE-2006-2312
US-CERT Technical Alerts
Metric	0.24
Document Revision	22

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Produced 2006 by US-CERT, a government organization
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