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WU-FTPD ABOR Command Arbitrary File Access

medium Nessus Plugin ID 14301

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Synopsis

The remote FTP server seems to be vulnerable to a remote privilege escalation.

Description

The version of WU-FTPD running on the remote host contains a flaw that may allow a malicious user to gain access to unauthorized privileges.

Specifically, there is a flaw in the way that the server handles an ABOR command after a data connection has been closed. The flaw is within the dologout() function and proper exploitation will give the remote attacker the ability to execute arbitrary code as the 'root' user.

This flaw may lead to a loss of confidentiality and/or integrity.

*** Nessus solely relied on the banner of the remote server
*** to issue this warning, so it may be a false positive.

Solution

Upgrade to Wu-FTPd 2.4.2 or newer

See Also

https://seclists.org/bugtraq/1997/Jan/11

https://seclists.org/bugtraq/1997/Jan/18

Plugin Details

Severity: Medium

ID: 14301

File Name: wu_ftpd_abor_priviledge_escalation.nasl

Version: 1.19

Type: remote

Family: FTP

Published: 8/17/2004

Updated: 11/15/2018

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.4

CVSS v2

Risk Factor: Medium

Base Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:N

Vulnerability Information

Required KB Items: Settings/ParanoidReport, ftp/login, ftp/wuftpd

Vulnerability Publication Date: 1/4/1997

Reference Information

CVE: CVE-1999-1326