ProFTPD < 1.3.2b / 1.3.3x < 1.3.3rc2 client-hostname restriction bypass

Medium Nessus Plugin ID 106752

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VPR Score: 3.3


The remote FTP server is affected by a Denial of Service vulnerability.


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 1.3.2x prior to 1.3.2b or 1.3.3x prior to 1.3.3rc2 and is affected by a mitigation bypass vulnerability when the dNSNameRequired TLS option is enabled.


Upgrade to ProFTPD version 1.3.2b / 1.3.3rc2 or later.

See Also

Plugin Details

Severity: Medium

ID: 106752

File Name: proftpd_1_3_3rc2.nasl

Version: 1.4

Type: remote

Family: FTP

Published: 2018/02/12

Updated: 2019/11/08

Dependencies: 10084, 10092

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Medium

VPR Score: 3.3

CVSS v2.0

Base Score: 5.8

Temporal Score: 4.3

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

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

CVSS v3.0

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:proftpd:proftpd

Required KB Items: ftp/proftpd, Settings/ParanoidReport

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2008/10/20

Vulnerability Publication Date: 2008/08/06

Reference Information

CVE: CVE-2009-3639

BID: 36804

CWE: 310