| GEN:SID | 1:1832 |
| Message | CHAT ICQ forced user addition |
| Summary | This event is generated when activity relating to network chat clients is detected.
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| Impact | Policy Violation. Use of chat clients to communicate with unkown external sources may be against the policy of many organizations.
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| Detailed Information | Instant Messaging (IM) and other chat related client software can allow users to transfer files directly between hosts. This can allow malicious users to circumvent the protection offered by a network firewall.
Vulnerabilities in these clients may also allow remote attackers to gain unauthorized access to a host. This events indicates that an attempt has been made to add a user to the contact list of Mirabilis' ICQ client via a specially crafted URI on a website.
Certain versions of Mirabilis' ICQ client do not require user intervention before adding another ICQ user to the contact list. It is possible for a client to be added to the contact list via a specially crafted URI without the user's knowledge.
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| Affected Systems | |
| Attack Scenarios | An attacker might utilize this vulnerability in the ICQ client to gain access to a host, then upload a Trojan Horse program to gain control of that host.
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| Ease of Attack | Simple.
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| Corrective Action | Disallow the use of IM clients on the protected network and enforce or implement an organization wide policy on the use of IM clients.
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| Additional References | |
| Rule References | bugtraq: 3226
cve: 2001-1305
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