Free Web Chat 2.0 usermanager.java adduser usrName denial of service

HistoryDiffrelatejsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.8	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic was found in Free Web Chat 2.0. This affects the function adduser of the file usermanager.java. The manipulation of the argument usrName results in denial of service. This vulnerability is known as CVE-2004-2646. Furthermore, an exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Free Web Chat 2.0 (Chat Software). Affected is the function adduser of the file usermanager.java. The manipulation of the argument usrName with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. CVE summarizes:

The addUser function in UserManager.java in Free Web Chat 2.0 allows remote attackers to cause a denial of service (uncaught NullPointerException) via unknown attack vectors that cause the usrName variable to be null.

The weakness was published 08/04/2004 by Donato Ferrante (Website). The advisory is shared for download at securitytracker.com. This vulnerability is traded as CVE-2004-2646 since 12/04/2005. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known.

A public exploit has been developed in ANSI C and been published even before and not after the advisory. The exploit is shared for download at securityfocus.com. It is declared as proof-of-concept.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (16893), Exploit-DB (24351), SecurityFocus (BID 10863†), OSVDB (8369†) and SecurityTracker (ID 1010851†). Similar entry is available at VDB-23521. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Chat Software

Name

Free Web Chat

Version

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/04/2004 🔍
08/04/2004 +0 days 🔍
08/04/2004 +0 days 🔍
08/08/2004 +3 days 🔍
12/31/2004 +144 days 🔍
12/04/2005 +338 days 🔍
03/10/2015 +3383 days 🔍
04/27/2025 +3701 days 🔍

Sourcesinfo

Advisory: securitytracker.com⛔
Researcher: Donato Ferrante
Status: Not defined

CVE: CVE-2004-2646 (🔍)
GCVE (CVE): GCVE-0-2004-2646
GCVE (VulDB): GCVE-100-23520
X-Force: 16893 - Free Web Chat usermanager.java denial of service
SecurityFocus: 10863 - Multiple Free Web Chat Denial Of Service Vulnerabilities
OSVDB: 8369 - Free Web Chat UserManager.java Null Pointer DoS
SecurityTracker: 1010851

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 03/10/2015 12:14
Updated: 04/27/2025 06:14
Changes: 03/10/2015 12:14 (57), 07/21/2017 10:23 (8), 01/10/2025 10:42 (21), 04/27/2025 06:14 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.