CVE-2010-20121

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
VulnCheckCNA
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CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 90%
VendorProductVersion
easyftp_server_projecteasyftp_server
𝑥
< 1.7.0.12
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://paulmakowski.wordpress.com/2010/02/28/increasing-payload-size-w-return-address-overwrite/
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/easyftp_cwd_fixret.rb
https://seclists.org/bugtraq/2010/Feb/202
https://www.exploit-db.com/exploits/11668
https://www.exploit-db.com/exploits/12312
https://www.exploit-db.com/exploits/14402
https://www.exploit-db.com/exploits/16737
https://www.vulncheck.com/advisories/easyftp-server-cwd-command-stack-buffer-overflow
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/ftp/easyftp_cwd_fixret.rb
https://seclists.org/bugtraq/2010/Feb/202
https://www.exploit-db.com/exploits/11668
https://www.exploit-db.com/exploits/12312
https://www.exploit-db.com/exploits/14402
https://www.exploit-db.com/exploits/16737