Description
The lreply function in wu-ftpd 2.6.0 and earlier does not properly cleanse an untrusted format string, which allows remote attackers to execute arbitrary commands via the SITE EXEC command.
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Metasploit 1 module
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WU-FTPD SITE EXEC/INDEX Format String Vulnerability
exploit/multi/ftp/wuftpd_site_exec_format
Exploit-DB 7
- WU-FTPD - Site EXEC/INDEX Format String (Metasploit) EDB-16311 · remote · Nov 30, 2010 · verified
- BeroFTPD 1.3.4(1) (Linux x86) - Remote Code Execution EDB-269 · remote · May 8, 2001 · verified
- WU-FTPD 2.4.2/2.5 .0/2.6.0 - Remote Format String Stack Overwrite (3) EDB-20032 · remote · May 4, 2001 · verified
- WU-FTPD 2.6.0 - Remote Format Strings EDB-239 · remote · Jan 3, 2001 · verified
- WU-FTPD 2.6.0 - Remote Command Execution EDB-201 · remote · Nov 21, 2000 · verified
- WU-FTPD 2.4.2/2.5 .0/2.6.0 - Remote Format String Stack Overwrite (2) EDB-20031 · remote · Sep 26, 2000 · verified
- WU-FTPD 2.4.2/2.5 .0/2.6.0 - Remote Format String Stack Overwrite (1) EDB-20030 · remote · Oct 15, 1999 · verified
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
References
- CA-2000-13 third-party-advisory
- 20000707 New Released Version of the WuFTPD Sploit mailing-list
- RHSA-2000:039 vendor-advisory
- CSSA-2000-020.0 vendor-advisory
- 20000622 WuFTPD: Providing *remote* root since at least1994 mailing-list
- 20000702 [Security Announce] wu-ftpd update mailing-list
- 20000723 CONECTIVA LINUX SECURITY ANNOUNCEMENT - WU-FTPD (re-release) mailing-list
- 1387 vdb-entry
- 20000623 WUFTPD 2.6.0 remote root exploit mailing-list
- 20000623 ftpd: the advisory version mailing-list
- wuftp-format-string-stack-overwrite(4773) vdb-entry