Washington University ftp daemon (wu-ftpd) SITE EXEC vulnerability

vendor:

wu-ftpd

by:

SecurityFocus

7.5

CVSS

HIGH

Format String Vulnerability

134

CWE

Product Name: wu-ftpd

Affected Version From: 2.6.2001

Affected Version To: 2.6.2002

Patch Exists: YES

Related CWE: CVE-2003-0352

CPE: a:wu-ftpd:wu-ftpd:2.6.2

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Linux, UNIX

2003

Washington University ftp daemon (wu-ftpd) SITE EXEC vulnerability

Washington University ftp daemon (wu-ftpd) is vulnerable to a very serious remote attack in the SITE EXEC implementation. Because of user input going directly into a format string for a *printf function, it is possible to overwrite important data, such as a return address, on the stack. When this is accomplished, the function can jump into shellcode pointed to by the overwritten eip and execute arbitrary commands as root. It should be noted that the SITE INDEX command is affected as well.

Mitigation:

Input validation should be used to prevent malicious user input from being used in format strings.

Source

Exploit-DB raw data:

source: https://www.securityfocus.com/bid/1387/info
  
Washington University ftp daemon (wu-ftpd) is a very popular unix ftp server shipped with many distributions of Linux and other UNIX operating systems. Wu-ftpd is vulnerable to a very serious remote attack in the SITE EXEC implementation. Because of user input going directly into a format string for a *printf function, it is possible to overwrite important data, such as a return address, on the stack. When this is accomplished, the function can jump into shellcode pointed to by the overwritten eip and execute arbitrary commands as root. While exploited in a manner similar to a buffer overflow, it is actually an input validation problem. Anonymous ftp is exploitable making it even more serious as attacks can come anonymously from anywhere on the internet.
  
It should be noted that the SITE INDEX command is affected as well. 

https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/20032.tar.gz