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.”
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Easyftp Server Project | Easyftp Server | < 1.7.0.12 |
Related Weaknesses (CWE)
References
- https://paulmakowski.wordpress.com/2010/02/28/increasing-payload-size-w-return-aExploitThird Party Advisory
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/expExploit
- https://seclists.org/bugtraq/2010/Feb/202ExploitMailing ListThird Party Advisory
- https://www.exploit-db.com/exploits/11668ExploitVDB Entry
- https://www.exploit-db.com/exploits/12312ExploitVDB Entry
- https://www.exploit-db.com/exploits/14402ExploitVDB Entry
- https://www.exploit-db.com/exploits/16737ExploitVDB Entry
- https://www.vulncheck.com/advisories/easyftp-server-cwd-command-stack-buffer-oveThird Party Advisory
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/expExploit
- https://seclists.org/bugtraq/2010/Feb/202ExploitMailing ListThird Party Advisory
- https://www.exploit-db.com/exploits/11668ExploitVDB Entry
- https://www.exploit-db.com/exploits/12312ExploitVDB Entry
- https://www.exploit-db.com/exploits/14402ExploitVDB Entry
- https://www.exploit-db.com/exploits/16737ExploitVDB Entry
FAQ
What is CVE-2010-20121?
CVE-2010-20121 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 pr...
How severe is CVE-2010-20121?
CVE-2010-20121 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2010-20121?
Check the references section above for vendor advisories and patch information. Affected products include: Easyftp Server Project Easyftp Server.