CVE-2010-20121

Summary

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.”

Affected Software

Weaknesses

• CWE-121: CWE-121 Stack-based Buffer Overflow

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: yes
  • Technical Impact: total

Additional References

• https://www.exploit-db.com/exploits/14402
• https://www.exploit-db.com/exploits/11668
• https://www.exploit-db.com/exploits/16737
• https://www.exploit-db.com/exploits/12312
• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/easyftp_cwd_fixret.rb
• https://seclists.org/bugtraq/2010/Feb/202

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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