Wu-FTPD/BeroFTPD/Linux FTP MAPPING_CHDIR memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.5$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Wu-FTPD, BeroFTPD and Linux FTP. Affected by this vulnerability is an unknown functionality of the component MAPPING_CHDIR Handler. The manipulation leads to memory corruption. This vulnerability is referenced as CVE-1999-0878. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Wu-FTPD, BeroFTPD and Linux FTP (File Transfer Software) (the affected version is unknown). It has been rated as very critical. This issue affects an unknown code of the component MAPPING_CHDIR Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in WU-FTPD and related FTP servers allows remote attackers to gain root privileges via MAPPING_CHDIR.

The weakness was published 08/22/1999 by Michal Zalewski (FIRST) (Website). It is possible to read the advisory at securityfocus.com. The identification of this vulnerability is CVE-1999-0878. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/22/2025).

The vulnerability scanner Nessus provides a plugin with the ID 10318 (WU-FTPD Multiple Vulnerabilities (OF, Priv Esc)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FTP and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 27153 (Multiple Vendor WU-FTPD Buffer Overflow Vulnerabilities).

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (3158), Tenable (10318), SecurityFocus (BID 599†) and Vulnerability Center (SBV-1415†). Similar entries are available at VDB-14491, VDB-14874 and VDB-14924. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
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 corruption
CWE: CWE-119
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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Nessus ID: 10318
Nessus Name: WU-FTPD Multiple Vulnerabilities (OF, Priv Esc)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/22/1999 🔍
08/22/1999 +0 days 🔍
08/22/1999 +0 days 🔍
08/22/1999 +0 days 🔍
08/31/1999 +9 days 🔍
07/13/2003 +1412 days 🔍
06/21/2014 +3996 days 🔍
10/22/2025 +4141 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: Michal Zalewski (FIRST)
Status: Confirmed

CVE: CVE-1999-0878 (🔍)
GCVE (CVE): GCVE-0-1999-0878
GCVE (VulDB): GCVE-100-14795
X-Force: 3158
SecurityFocus: 599 - Multiple Vendor Wu-Ftpd Buffer Overflow Vulnerability
Vulnerability Center: 1415 - Buffer Overflow in Wu-FTPD Server Allows Privilege Elevation, High

See also: 🔍

Entryinfo

Created: 06/21/2014 21:29
Updated: 10/22/2025 18:56
Changes: 06/21/2014 21:29 (65), 05/10/2019 17:09 (1), 10/22/2025 18:56 (21)
Complete: 🔍
Cache ID: 216::103

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

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