BisonWare FTP Server up to 4.1 PORT Command 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 marked as problematic has been reported in BisonWare FTP Server up to 4.1. This vulnerability affects unknown code of the component PORT Command Handler. Performing a manipulation results in denial of service. This vulnerability is known as CVE-1999-1156. Furthermore, an exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in BisonWare FTP Server up to 4.1 (File Transfer Software). This affects an unknown code of the component PORT Command Handler. The manipulation 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. The summary by CVE is:

BisonWare FTP Server 4.1 and earlier allows remote attackers to cause a denial of service via a malformed PORT command that contains a non-numeric character and a large number of carriage returns.

The weakness was published 05/17/1999 by Arne Vidstrom (Website). It is possible to read the advisory at xforce.iss.net. This vulnerability is uniquely identified as CVE-1999-1156. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed in ANSI C. 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 (2254), SecurityFocus (BID 271†) and Vulnerability Center (SBV-2170†). Similar entries are available at VDB-1221 and VDB-14656. Be aware that VulDB is the high quality 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
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/17/1999 🔍
05/17/1999 +0 days 🔍
05/17/1999 +0 days 🔍
05/17/1999 +0 days 🔍
09/24/2003 +1591 days 🔍
06/20/2014 +3922 days 🔍
04/19/2026 +4321 days 🔍

Sourcesinfo

Advisory: xforce.iss.net
Researcher: Arne Vidstrom
Status: Not defined

CVE: CVE-1999-1156 (🔍)
GCVE (CVE): GCVE-0-1999-1156
GCVE (VulDB): GCVE-100-14655
X-Force: 2254 - BisonWare FTP servers can be crashed by issuing a long or malformed argument to the PORT command
SecurityFocus: 271 - BisonWare Multiple Vulnerabilities
Vulnerability Center: 2170 - DoS in BisonWare FTP Server <= 4.1, Medium

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

Entryinfo

Created: 06/21/2014 00:25
Updated: 04/19/2026 03:22
Changes: 06/21/2014 00:25 (59), 05/13/2019 10:14 (6), 04/19/2026 03:22 (20)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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