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Age in Days
CVSS Score
Patch within next
Risk Level



30 Days



This vulnerability is 7 years 6 months and 10 days old there are exploits publicly available for it. The vulnerability itself is over a year old, and with there being exploits publicly available it is highly advisable that this vulnerability is patched immediately.



The remote FTP server contains a backdoor, allowing execution of arbitrary code.


Vulnerability Description

The version of vsftpd running on the remote host has been compiled with a backdoor. Attempting to login with a username containing:) (a smiley face) triggers the backdoor, which results in a shell listening on TCP port 6200. The shell stops listening after a client connects to and disconnects from it.

An unauthenticated, remote attacker could exploit this to execute arbitrary code as root.



Validate and recompile a legitimate copy of the source code.


Further Information


CVE References



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Whilst every effort is made to ensure the accuracy and robustness of any information presented, it is not possible for Hedgehog Cyber to test every possible scenario an organisation may face, and Hedgehog Cyber cannot be held liable for any loss or damage which may arise from taking action on any of the contents provided. Hedgehog Cyber strongly advises that all recommendations, solutions and detection methods detailed, are thoroughly reviewed and tested in non-production environments before being considered suitable for production release, in-line with any existing internal change control procedures.