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febd286907
Updated the description and impact of the CVE-2021-35211 entry for clarity. Added remediation steps and modified tags.
61 lines
2.1 KiB
Plaintext
61 lines
2.1 KiB
Plaintext
id: CVE-2021-35211
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info:
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name: SolarWinds Serv-U FTP - Remote Code Execution
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author: pussycat0x
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severity: critical
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description: |
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SolarWinds Serv-U Managed File Transfer and Serv-U Secure FTP for Windows before 15.2.3 HF2 contain a remote memory escape caused remote code execution vulnerability, letting attackers gain privileged access, exploit requires remote attacker to send crafted memory operations.
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impact: |
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Attackers can execute arbitrary code with high privileges on the affected system, potentially leading to full system compromise.
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remediation: |
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Update to version 15.2.3 HF2 or later.
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reference:
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- https://github.com/BishopFox/CVE-2021-35211
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- https://www.rapid7.com/db/vulnerabilities/solarwinds-serv-u-cve-2021-35211/
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- https://www.microsoft.com/en-us/security/blog/2021/07/13/microsoft-discovers-threat-actor-targeting-solarwinds-serv-u-software-with-0-day-exploit/
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metadata:
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verified: true
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max-request: 1
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shodan-query: "SSH-2.0-Serv-U"
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tags: js,enum,ssh,misconfig,network,kev,vkev,passive
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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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let m = require("nuclei/ssh");
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let c = m.SSHClient();
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let response = c.ConnectSSHInfoMode(Host, Port);
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// Convert response to string if it's an object
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let responseStr = typeof response === 'string' ? response : JSON.stringify(response);
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let jsonStart = responseStr.indexOf('{');
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let jsonEnd = responseStr.lastIndexOf('}') + 1;
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let jsonString = responseStr.substring(jsonStart, jsonEnd);
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let result = JSON.parse(jsonString);
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Export(result.ServerID.Raw);
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args:
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Host: "{{Host}}"
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Port: "22"
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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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- "contains(response, 'SSH-2.0-Serv-U')"
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- "compare_versions(version, ' < 15.2.3.742')"
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condition: and
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extractors:
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- type: regex
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name: version
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part: response
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group: 1
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regex:
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- 'SSH-2.0-Serv-U_(\d+\.\d+\.\d+)(?:\.(\d+))?'
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