ProFTPD < 1.3.3c Multiple Vulnerabilities

Critical Nessus Plugin ID 50544


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: 2010/11/10

Updated: 2020/03/27

Dependencies: 10092

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Critical

CVSS Score Source: CVE-2010-4221

CVSS v2.0

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:/a:proftpd:proftpd

Required KB Items: ftp/proftpd, Settings/ParanoidReport

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2010/10/29

Vulnerability Publication Date: 2010/11/01

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