EasyFTP Server <= 1.7.0.11 CWD Command Stack Buffer Overflow
Vulnerability Description
EasyFTP Server versions up to 1.7.0.11 contain a stack-based buffer overflow vulnerability in the FTP command parser. When processing the CWD (Change Working Directory) command, the server fails to properly validate the length of the input string, allowing attackers to overwrite memory on the stack. This flaw enables remote code execution without authentication, as EasyFTP allows anonymous access by default. The vulnerability was resolved in version 1.7.0.12, after which the product was renamed “UplusFtp.”
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Paul Makowski
References
- https://seclists.org/bugtraq/2010/Feb/202
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/easyftp_cwd_fixret.rb
- https://paulmakowski.wordpress.com/2010/02/28/increasing-payload-size-w-return-address-overwrite/
- https://www.exploit-db.com/exploits/12312
- https://www.exploit-db.com/exploits/16737
- https://www.exploit-db.com/exploits/11668
- https://www.exploit-db.com/exploits/14402
- https://www.vulncheck.com/advisories/easyftp-server-cwd-command-stack-buffer-overflow
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