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ProFTPD < 1.3.5b / 1.3.6x < 1.3.6rc2 weak Diffie-Hellman key

high Nessus Plugin ID 106755

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Synopsis

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

Description

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 prior to 1.3.5b or 1.3.6x prior to 1.3.6rc2 and is affected by an issue in the mod_tls module, which might cause a weaker than intended Diffie-Hellman key to be used.

Solution

Upgrade to ProFTPD version 1.3.5b / 1.3.6rc2 or later.

See Also

http://bugs.proftpd.org/show_bug.cgi?id=4230

Plugin Details

Severity: High

ID: 106755

File Name: proftpd_1_3_6_rc2.nasl

Version: 1.2

Type: remote

Family: FTP

Published: 2/12/2018

Updated: 11/8/2019

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

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

Vulnerability Information

CPE: cpe:/a:proftpd:proftpd

Required KB Items: Settings/ParanoidReport, ftp/proftpd

Exploit Ease: No known exploits are available

Patch Publication Date: 3/11/2016

Vulnerability Publication Date: 3/8/2016

Reference Information

CVE: CVE-2016-3125

BID: 84327