{"uuid": "7cee0856-2eb0-49a4-92df-a1dfc94e6ffe", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "9f56dd64-161d-43a6-b9c3-555944290a09", "vulnerability": "CVE-2010-20121", "type": "seen", "source": "https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/ftp/easyftp_cwd_fixret.rb", "content": "{\"aliases\": [], \"arch\": \"\", \"author\": [\"Paul Makowski \", \"jduck \"], \"autofilter_ports\": [21, 2121], \"autofilter_services\": [\"ftp\"], \"check\": true, \"default_credential\": false, \"description\": \"This module exploits a stack-based buffer overflow in EasyFTP Server 1.7.0.11\\n          and earlier. EasyFTP fails to check input size when parsing 'CWD' commands, which\\n          leads to a stack based buffer overflow.  EasyFTP allows anonymous access by\\n          default; valid credentials are typically unnecessary to exploit this vulnerability.\\n\\n          After version 1.7.0.12, this package was renamed \\\"UplusFtp\\\".\\n\\n          This exploit utilizes a small piece of code that I\\\\'ve referred to as 'fixRet'.\\n          This code allows us to inject of payload of ~500 bytes into a 264 byte buffer by\\n          'fixing' the return address post-exploitation.  See references for more information.\", \"disclosure_date\": \"2010-02-16\", \"fullname\": \"exploit/windows/ftp/easyftp_cwd_fixret\", \"is_install_path\": true, \"mod_time\": \"2026-04-22 11:58:58 +0000\", \"name\": \"EasyFTP Server CWD Command Stack Buffer Overflow\", \"needs_cleanup\": null, \"notes\": {\"Reliability\": [\"unknown-reliability\"], \"SideEffects\": [\"unknown-side-effects\"], \"Stability\": [\"unknown-stability\"]}, \"path\": \"/modules/exploits/windows/ftp/easyftp_cwd_fixret.rb\", \"platform\": \"Windows\", \"post_auth\": false, \"rank\": 500, \"ref_name\": \"windows/ftp/easyftp_cwd_fixret\", \"references\": [\"CVE-2010-20121\", \"OSVDB-62134\", \"BID-38262\", \"URL-http://paulmakowski.wordpress.com/2010/02/28/increasing-payload-size-w-return-address-overwrite/\", \"URL-http://paulmakowski.wordpress.com/2010/04/19/metasploit-plugin-for-easyftp-server-exploit\", \"URL-https://seclists.org/bugtraq/2010/Feb/202\"], \"rport\": 21, \"session_types\": false, \"targets\": [\"Windows Universal - v1.7.0.2\", \"Windows Universal - v1.7.0.3\", \"Windows Universal - v1.7.0.4\", \"Windows Universal - v1.7.0.5\", \"Windows Universal - v1.7.0.6\", \"Windows Universal - v1.7.0.7\", \"Windows Universal - v1.7.0.8\", \"Windows Universal - v1.7.0.9\", \"Windows Universal - v1.7.0.10\", \"Windows Universal - v1.7.0.11\"], \"type\": \"exploit\"}", "creation_timestamp": "2026-09-08T06:51:36.115356Z"}