Faust Informatics Freestyle Chat up to 4.1 SR2 MS DOS Device Name /aux denial of service

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Faust Informatics Freestyle Chat up to 4.1 SR2. This impacts an unknown function of the file /aux of the component MS DOS Device Name. Such manipulation leads to denial of service. This vulnerability is referenced as CVE-2001-0616. Furthermore, an exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Faust Informatics Freestyle Chat up to 4.1 SR2 (Chat Software). It has been rated as problematic. Affected by this issue is some unknown functionality of the file /aux of the component MS DOS Device Name. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

Faust Informatics Freestyle Chat server prior to 4.1 SR3 allows a remote attacker to create a denial of service via a URL request which includes a MS-DOS device name (e.g., GET /aux HTTP/1.0).

The bug was discovered 05/25/2001. The weakness was published 08/14/2001 by nemesystm as not defined posting (Bugtraq). The advisory is shared for download at archives.neohapsis.com. This vulnerability is handled as CVE-2001-0616. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 81 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38058 (Faust Informatics Freestyle Chat MS-DOS Device Name DoS Vulnerability).

Upgrading to version 4.1 SR3 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (6602), Exploit-DB (20883), SecurityFocus (BID 2777†), OSVDB (1842†) and Vulnerability Center (SBV-6671†). Similar entry is available at VDB-17179. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
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Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Freestyle Chat 4.1 SR3

Timelineinfo

05/25/2001 🔍
05/25/2001 +0 days 🔍
05/25/2001 +0 days 🔍
08/14/2001 +81 days 🔍
08/14/2001 +0 days 🔍
12/30/2004 +1234 days 🔍
07/07/2014 +3476 days 🔍
10/05/2025 +4108 days 🔍

Sourcesinfo

Advisory: archives.neohapsis.com
Researcher: nemesystm
Status: Confirmed

CVE: CVE-2001-0616 (🔍)
GCVE (CVE): GCVE-0-2001-0616
GCVE (VulDB): GCVE-100-17180
X-Force: 6602 - FreeStyle Chat MS-DOS device denial of service
SecurityFocus: 2777 - Faust Informatics Freestyle Chat MS-DOS Device Name DoS Vulnerability
OSVDB: 1842 - Faust Informatics - Freestyle Chat - MS-DOS Device Name - Denial of Service Issue
Vulnerability Center: 6671 - DoS in Faust Informatics Freestyle Chat 4.1 SR2 via URL Request, Medium

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

Entryinfo

Created: 07/08/2014 01:01
Updated: 10/05/2025 16:37
Changes: 07/08/2014 01:01 (66), 06/03/2019 12:25 (3), 01/26/2025 11:41 (27), 10/05/2025 16:37 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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