H. Nomura Tiny FTPdaemon 0.52 STOR/RNTO/MKD/XMKD/RMD/XRMD/APPE/SIZE/RNFR memory corruption

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.
9.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in H. Nomura Tiny FTPdaemon 0.52 and classified as critical. Affected by this issue is some unknown functionality. Performing a manipulation of the argument STOR/RNTO/MKD/XMKD/RMD/XRMD/APPE/SIZE/RNFR results in memory corruption. This vulnerability is identified as CVE-2000-0133. Additionally, an exploit exists.

Detailsinfo

A vulnerability classified as very critical has been found in H. Nomura Tiny FTPdaemon 0.52 (File Transfer Software). This affects an unknown part. The manipulation of the argument STOR/RNTO/MKD/XMKD/RMD/XRMD/APPE/SIZE/RNFR with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflows in Tiny FTPd 0.52 beta3 FTP server allows users to execute commands via the STOR, RNTO, MKD, XMKD, RMD, XRMD, APPE, SIZE, and RNFR commands.

The weakness was released 02/01/2000 by Nobuo Miwa (Shadow) (Website). It is possible to read the advisory at securityfocus.com. This vulnerability is uniquely identified as CVE-2000-0133. 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 and a public exploit are known. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/19/2025).

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. The commercial vulnerability scanner Qualys is able to test this issue with plugin 27071 (Tiny FTPd Multiple Buffer Overflow Vulnerabilities).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product. Attack attempts may be identified with Snort ID 1976.

The vulnerability is also documented in the databases at X-Force (9573), Exploit-DB (19737), SecurityFocus (BID 961†) and Vulnerability Center (SBV-1736†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.1

VulDB Base Score: 10.0
VulDB Temp Score: 9.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Snort ID: 1976
Snort Message: PROTOCOL-FTP RMD overflow attempt
Snort Class: 🔍

Suricata ID: 2102391
Suricata Class: 🔍
Suricata Message: 🔍
SourceFire IPS: 🔍
ISS Proventia IPS: 🔍

Timelineinfo

02/01/2000 🔍
02/01/2000 +0 days 🔍
02/01/2000 +0 days 🔍
02/01/2000 +0 days 🔍
08/19/2003 +1295 days 🔍
06/23/2014 +3961 days 🔍
10/19/2025 +4136 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: Nobuo Miwa (Shadow)
Status: Not defined

CVE: CVE-2000-0133 (🔍)
GCVE (CVE): GCVE-0-2000-0133
GCVE (VulDB): GCVE-100-15291
X-Force: 9573
SecurityFocus: 961 - Tiny FTPd Multiple Buffer Overflow Vulnerabilities
Vulnerability Center: 1736 - Buffer overflow in Tiny FTPd <= 0.52 beta3 via Multiple Commands, High

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

Entryinfo

Created: 06/23/2014 17:01
Updated: 10/19/2025 18:36
Changes: 06/23/2014 17:01 (69), 05/11/2019 17:29 (2), 05/02/2025 10:23 (20), 10/19/2025 18:36 (3)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!