NEC SOCKS4 Module Username Handling Remote Overflow

critical Nessus Plugin ID 11164
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote SOCKS service is prone to a buffer overflow attack.


The SOCKS4 service running on the remote host crashes when it receives a request with a long username. An attacker may be able to leverage this issue to disable the remote service or even execute arbitrary code on the affected host.


Contact the vendor for a fix.

Plugin Details

Severity: Critical

ID: 11164

File Name: socks4_username_overflow.nasl

Version: 1.21

Type: remote

Family: Firewalls

Published: 11/25/2002

Updated: 7/30/2018

Dependencies: find_service1.nasl

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Reference Information

CVE: CVE-2002-2368

BID: 5147

CWE: 119