CVE-2010-20103

KRITISCH 9.8CVE-2010-20103 · Published 20/08/2025 · updated 15/07/2026

Package	Affected versions	Patched versions
proftpd proftpd	`= 1.3.3`	No fix yet

Description

A malicious backdoor was embedded in the official ProFTPD 1.3.3c source tarball distributed between November 28 and December 2, 2010. The backdoor implements a hidden FTP command trigger that, when invoked, causes the server to execute arbitrary shell commands with root privileges. This allows remote, unauthenticated attackers to run any OS command on the FTP server host.

References

proftpd.org · Product
advisories.checkpoint.com/defense/advisories/public/2011/cpai-2010-151.html · Third Party Advisory
proftpd/proftpd · Product
raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/ftp/proftpd_133c_backdoor.rb · Exploit
web.archive.org/web/20111107212129/http://rsync.proftpd.org · Release Notes
exploit-db.com/exploits/15662 · Exploit
exploit-db.com/exploits/16921 · Exploit
vulncheck.com/advisories/proftpd-backdoor-command-execution · Third Party Advisory

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