GEN:SID | 1:250 |
Message | DDOS mstream handler to client |
Summary | The event is generated when a DDoS mstream handler responds to an mstream client.
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Impact | Severe. If the source IP is in your network, it is possibly an mstream handler. If the destination IP is in your network, it is possibly an mstream client.
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Detailed Information | The mstream DDoS uses a tiered structure of compromised hosts to coordinate and participate in a distributed denial of service attack. At the highest level, clients communicate with handlers to direct them to launch attacks. A client may contact a handler using a TCP SYN packet to destination port 15104. A listening handler would respond to this on source port 15104 with a string of ">" in the payload.
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Affected Systems | Any mstream compromised host.
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Attack Scenarios | After a host becomes an mstream handler, the client will attempt to communicate with the handler. A handler will respond to this communication.
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Ease of Attack | Simple. mstream code is freely available.
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Corrective Action | |
Additional References | CVE: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2000-0138
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Rule References | cve: 2000-0138
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