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CERT Coordination Center

ICQ 7 fails to verify the origin of software updates

Vulnerability Note VU#680540

Original Release Date: 2011-01-13 | Last Revised: 2011-01-13


ICQ 7 does not verify the origin of automatic updates which may allow a remote attacker to execute arbitrary code.


According to ICQ's website: "ICQ, the pioneer of Instant Messaging (IM), now offers the optimal integration between Instant Messaging and Social Networks with the newest ICQ version – the Social Messaging tool that can be downloaded free of charge at" ICQ 7 checks for updates on start-up but does not verify the origin of updates through digital signatures or other means. An attacker who can successfully spoof using a man-in-the-middle attack, DNS poisoning, or some other means can cause the client to download a malicious software update.


By successfully spoofing the update site, an attacker may be able to execute arbitrary code with the privileges of the user.


We are currently unaware of a practical solution to this problem.

Vendor Information


Digital Sky Technologies Affected

Updated:  January 13, 2011



Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

CVSS Metrics

Group Score Vector



Thanks to Daniel Seither for reporting this vulnerability.

This document was written by Michael Orlando.

Other Information

CVE IDs: None
Severity Metric: 13.16
Date Public: 2011-01-13
Date First Published: 2011-01-13
Date Last Updated: 2011-01-13 18:37 UTC
Document Revision: 13

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