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GEN:SID | 1:1729 |
Message | CHAT IRC channel join |
Summary | This event is generated when activity relating to network chat clients is detected. |
Impact | Policy Violation. Use of chat clients to communicate with unkown external sources may be against the policy of many organizations. |
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. |
Affected Systems | |
Attack Scenarios | A user may transfer sensitive company information to an external party using the file transfer capabilities of an IM client. An attacker might utilize a vulnerability in an IM client to gain access to a host, then upload a Trojan Horse program to gain control of that host. |
Ease of Attack | Simple. |
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. |
Additional References | IRC Protocol http://www.irchelp.org/irchelp/rfc/ |
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DID:333491
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