mirror of
https://github.com/projectdiscovery/nuclei-templates.git
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50 lines
1.6 KiB
YAML
50 lines
1.6 KiB
YAML
id: disable-ssh-forwarding
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info:
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name: Disable SSH Forwarding
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author: pussycat0x
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severity: unknown
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description: |
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SSH forwarding can enhance security by encrypting traffic (X11, agent, or port forwarding), but it also poses risks if misused. Attackers with access to a compromised system can pivot to other machines, potentially escalating privileges or stealing credentials.
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remediation: |
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Set X11Forwarding no and AllowTcpForwarding no in /etc/ssh/sshd_config to disable SSH forwarding 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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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('AllowTcpForwarding yes') && !sshConfig.includes('#AllowTcpForwarding yes') || sshConfig.includes('X11Forwarding yes')) {
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result += "Disable SSH Forwarding;";
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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: 4a0a00473045022100dc6908d6ef4bdff577247d002afeba2f2a2f0f4c6e8363603e4c60c46e452926022017929a72f04ee161a3700626a49ae427a6cdaaf14383292d3dd6c972d7dcb70f:922c64590222798bb761d5b6d8e72950 |