Steve Poulsen GuildFTPd 0.97 NULL Character memory leak

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Steve Poulsen GuildFTPd 0.97 and classified as problematic. This impacts an unknown function of the component NULL Character Handler. The manipulation results in memory leak. This vulnerability is reported as CVE-2001-0769. No exploit exists. Applying restrictive firewalling is recommended.

Detailsinfo

A vulnerability classified as problematic has been found in Steve Poulsen GuildFTPd 0.97 (File Transfer Software). Affected is an unknown code of the component NULL Character Handler. The manipulation with an unknown input leads to a memory leak vulnerability. CWE is classifying the issue as CWE-401. The product does not sufficiently track and release allocated memory after it has been used, which slowly consumes remaining memory. This is going to have an impact on availability. CVE summarizes:

Memory leak in GuildFTPd Server 0.97 allows remote attackers to cause a denial of service via a request containing a null character.

The bug was discovered 05/22/2001. The weakness was disclosed 10/18/2001 (Website). The advisory is shared for download at xforce.iss.net. This vulnerability is traded as CVE-2001-0769. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 149 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 27074 (GuildFTPD Remote Denial of Service Vulnerability).

It is possible to mitigate the weakness by firewalling .

The vulnerability is also documented in the databases at X-Force (6613), SecurityFocus (BID 2784†), OSVDB (5539†) and Vulnerability Center (SBV-13506†). The entries VDB-17533, VDB-17531 and VDB-17530 are pretty similar. 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: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.2
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: Memory leak
CWE: CWE-401 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/22/2001 🔍
05/22/2001 +0 days 🔍
10/18/2001 +149 days 🔍
10/18/2001 +0 days 🔍
10/18/2001 +0 days 🔍
12/20/2006 +1889 days 🔍
07/09/2014 +2758 days 🔍
10/04/2025 +4105 days 🔍

Sourcesinfo

Advisory: xforce.iss.net
Status: Not defined

CVE: CVE-2001-0769 (🔍)
GCVE (CVE): GCVE-0-2001-0769
GCVE (VulDB): GCVE-100-17532
X-Force: 6613
SecurityFocus: 2784 - GuildFTPD Remote Denial of Service Vulnerability
OSVDB: 5539 - CVE-2001-0769 - Steve Poulsen - Guildftpd - Medium
Vulnerability Center: 13506 - GuildFTPd Server 0.97 Memory Leak Allows Remote Denial of Service, High

See also: 🔍

Entryinfo

Created: 07/09/2014 17:35
Updated: 10/04/2025 14:47
Changes: 07/09/2014 17:35 (57), 07/12/2019 12:17 (5), 10/04/2025 14:47 (18)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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