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Nuclei Templates

Disable SSH Protocol

ID: file-disable-sshp-protocol

Severity: unknown

Author: pussycat0x

Tags: audit,config,file,ssh

Description

Section titled “Description”

Using SSH Protocol 1 is insecure as it lacks strong encryption and integrity checks, making it vulnerable to man-in-the-middle attacks, session hijacking, and other exploits. It is recommended to use SSH Protocol 2 for enhanced security.

YAML Source

Section titled “YAML Source”
id: file-disable-sshp-protocol


info:
  name: Disable SSH Protocol
  author: pussycat0x
  severity: unknown
  description: |
    Using SSH Protocol 1 is insecure as it lacks strong encryption and integrity checks, making it vulnerable to man-in-the-middle attacks, session hijacking, and other exploits. It is recommended to use SSH Protocol 2 for enhanced security.
  remediation: |
    Set Protocol 2 in /etc/ssh/sshd_config to disable SSH Protocol 1 and restart the SSH service.
  reference:
    - https://vishalraj82.medium.com/hardening-openssh-security-37f5d634015f
    - https://www.ktchost.com/blog/enable-ssh-protocol-2/
  metadata:
    verified: true
  tags: audit,config,file,ssh


file:
  - extensions:
      - all


    matchers-condition: and
    matchers:
      - type: word
        words:
          - "# This is the sshd server system-wide configuration file"


      - type: word
        words:
          - "Protocol 2"
        negative: true
# digest: 4b0a00483046022100df321d349e00834fe6ee106774d32184d6aeec1c921f5c7bbbe76fe436bbf86202210098eb1f0ac12461bbda59911610b7fec2f6a87c5f808390253ae4aa05b52a8012:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "file/audit/ssh/file-disable-ssh-protocol.yaml"

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