ProFTPD < 1.3.3c Multiple Vulnerabilities

critical Nessus Plugin ID 50544
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The remote FTP server is affected by multiple vulnerabilities.


The remote host is using ProFTPD, a free FTP server for Unix and Linux.

According to its banner, the version of ProFTPD installed on the remote host is earlier than 1.3.3c. Such versions are reportedly affected by the following vulnerabilities :

- When ProFTPD is compiled with 'mod_site_misc' and a directory is writable, a user can use 'mod_site_misc' to create or delete a directory outside the writable directory, create a symlink located outside the writable directory, or change the time of a file located outside the writable directory. (Bug #3519)

- A stack-based buffer overflow exists in the server's 'pr_netio_telnet_gets()' function, which can be triggered by when reading user input containing a TELNET_IAC escape sequence. (Bug #3521)

Note that Nessus did not actually test for the flaws but instead has relied on the version in ProFTPD's banner so this may be a false positive.


Upgrade to ProFTPD version 1.3.3c or later.

See Also

Plugin Details

Severity: Critical

ID: 50544

File Name: proftpd_1_3_3c.nasl

Version: 1.19

Type: remote

Family: FTP

Published: 11/10/2010

Updated: 3/27/2020

Dependencies: ftpserver_detect_type_nd_version.nasl

Configuration: Enable paranoid mode

Risk Information

CVSS Score Source: CVE-2010-4221


Risk Factor: High

Score: 7.4


Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

Vulnerability Information

CPE: cpe:2.3:a:proftpd:proftpd:*:*:*:*:*:*:*:*

Required KB Items: Settings/ParanoidReport, ftp/proftpd

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/29/2010

Vulnerability Publication Date: 11/1/2010

Exploitable With

Core Impact

Metasploit (ProFTPD 1.3.2rc3 - 1.3.3b Telnet IAC Buffer Overflow (Linux))

Reference Information

CVE: CVE-2010-3867, CVE-2010-4221

BID: 44562

EDB-ID: 15449

Secunia: 42052