Vulnerabilities > CVE-2004-2466 - Improper Restriction of Operations within the Bounds of a Memory Buffer vulnerability in EFS Software Easy Chat Server 1.2/2.2

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
PARTIAL
network
low complexity
efs-software
CWE-119
exploit available
metasploit
NVD
Published: 2004-12-31
Updated: 2022-08-01

Summary

chat.ghp in Easy Chat Server 1.2 allows remote attackers to cause a denial of service (server crash) via a long username parameter, possibly due to a buffer overflow. NOTE: it was later reported that 2.2 is also affected.

Vulnerable Configurations

Part Description Count
Application
Efs_Software
2

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

  • Buffer Overflow via Environment Variables
    This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
  • Overflow Buffers
    Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
  • Client-side Injection-induced Buffer Overflow
    This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
  • Filter Failure through Buffer Overflow
    In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
  • MIME Conversion
    An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.

Exploit-Db

  • descriptionEasy Chat Server 2.2 Remote Denial of Service Exploit. CVE-2004-2466. Dos exploit for windows platform
    fileexploits/windows/dos/4289.php
    idEDB-ID:4289
    last seen2016-01-31
    modified2007-08-14
    platformwindows
    port
    published2007-08-14
    reporterNetJackal
    sourcehttps://www.exploit-db.com/download/4289/
    titleEasy Chat Server 2.2 - Remote Denial of Service Exploit
    typedos
  • descriptionEFS Easy Chat Server Authentication Request Handling Buffer Overflow. CVE-2004-2466. Remote exploit for windows platform
    idEDB-ID:16772
    last seen2016-02-02
    modified2010-08-06
    published2010-08-06
    reportermetasploit
    sourcehttps://www.exploit-db.com/download/16772/
    titleEFS Easy Chat Server Authentication Request Handling Buffer Overflow
  • descriptionEasy Chat Server 3.1 - Stack Buffer Overflow. Remote exploit for windows platform
    fileexploits/windows/remote/33326.py
    idEDB-ID:33326
    last seen2016-02-03
    modified2014-05-12
    platformwindows
    port
    published2014-05-12
    reportersuperkojiman
    sourcehttps://www.exploit-db.com/download/33326/
    titleEasy Chat Server 3.1 - Stack Buffer Overflow
    typeremote

Metasploit

descriptionThis module exploits a stack buffer overflow in EFS Software Easy Chat Server versions 2.0 to 3.1. By sending an overly long authentication request, an attacker may be able to execute arbitrary code.
idMSF:EXPLOIT/WINDOWS/HTTP/EFS_EASYCHATSERVER_USERNAME
last seen2020-06-12
modified2019-01-10
published2009-03-02
referenceshttps://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2004-2466
reporterRapid7
sourcehttps://github.com/rapid7/metasploit-framework/blob/master//modules/exploits/windows/http/efs_easychatserver_username.rb
titleEFS Easy Chat Server Authentication Request Handling Buffer Overflow

Packetstorm

References