Detections
Analytics

SSLv2-Only Open Ports Unsupported

critical Nessus Plugin ID 132676

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Synopsis

The remote service encrypts communications with an unsupported protocol.

Description

This plugin detects if the remote host has any open ports which only support SSLv2. This protocol has been deprecated since 2011 because of security vulnerabilities and most major SSL libraries such as OpenSSL, NSS, Mbed TLS, and wolfSSL do not provide this functionality in their latest versions.

Nessus 8.9 and later no longer supports SSLv2.

Solution

Upgrade encryption protocol used for SSL/TLS traffic to SSLv3, TLS1.0, TLS1.1, TLS1.2, or TLS1.3

See Also

https://tools.ietf.org/html/rfc6176

Plugin Details

Severity: Critical

ID: 132676

File Name: ssl_v2_supported_only_89.nasl

Version: 1.4

Type: remote

Family: General

Published: 1/6/2020

Updated: 3/7/2023

Supported Sensors: Nessus

Vulnerability Information

Excluded KB Items: global_settings/disable_test_ssl_based_services

Reference Information

IAVA: 0001-A-0636