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https://github.com/projectdiscovery/nuclei-templates.git
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51 lines
1.6 KiB
YAML
51 lines
1.6 KiB
YAML
id: disable-empty-password
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info:
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name: Disable SSH Empty Password
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author: pussycat0x
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severity: high
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description: |
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Allowing empty passwords in SSH poses a severe security risk, enabling unauthorized access, brute-force attacks, and potential system compromise. It should always be disabled to prevent unauthorized logins.
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remediation: |
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Set PermitEmptyPasswords no in /etc/ssh/sshd_config to disable empty password logins and restart the SSH service.
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reference:
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- https://vishalraj82.medium.com/hardening-openssh-security-37f5d634015f
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- https://docs.datadoghq.com/security/default_rules/xccdf-org-ssgproject-content-rule-sshd-disable-empty-passwords/
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metadata:
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verified: true
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tags: audit,config,ssh,auth
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javascript:
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- pre-condition: |
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isPortOpen(Host,Port);
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code: |
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var m = require("nuclei/ssh");
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var c = m.SSHClient();
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c.Connect(Host,Port,User,Pass);
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const sshConfig = c.Run('cat /etc/ssh/sshd_config')
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sshConfig
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let result = "";
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if (sshConfig.includes('PermitEmptyPasswords yes')) {
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result += "Disable SSH Empty Password Access";
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}
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else{
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exit();
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}
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result
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args:
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Host: "{{Host}}"
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Port: "22"
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User: "{{usernames}}"
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Pass: "{{passwords}}"
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matchers:
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- type: dsl
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dsl:
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- "success == true"
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extractors:
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- type: dsl
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dsl:
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- response
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# digest: 4b0a0048304602210090f1b075340725c5e0a63dc65dabe176c1185bccf08e593976fd35572de9100802210093ed51e2c2f2b957243fb609c5c987ec849446151f7e846ca72cb7b91a89a01f:922c64590222798bb761d5b6d8e72950 |