Vulnerability Details CVE-2020-27304
The CivetWeb web library does not validate uploaded filepaths when running on an OS other than Windows, when using the built-in HTTP form-based file upload mechanism, via the mg_handle_form_request API. Web applications that use the file upload form handler, and use parts of the user-controlled filename in the output path, are susceptible to directory traversal
Exploit prediction scoring system (EPSS) score
EPSS Score 0.006
EPSS Ranking 69.2%
CVSS Severity
CVSS v3 Score 9.8
CVSS v2 Score 7.5
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://groups.google.com/g/civetweb/c/yPBxNXdGgJQ
- https://jfrog.com/blog/cve-2020-27304-rce-via-directory-traversal-in-civetweb-http-server/
- https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://groups.google.com/g/civetweb/c/yPBxNXdGgJQ
- https://jfrog.com/blog/cve-2020-27304-rce-via-directory-traversal-in-civetweb-http-server/
Products affected by CVE-2020-27304
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cpe:2.3:a:civetweb_project:civetweb:1.10
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cpe:2.3:a:civetweb_project:civetweb:1.11
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cpe:2.3:a:civetweb_project:civetweb:1.12
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cpe:2.3:a:civetweb_project:civetweb:1.13
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cpe:2.3:a:civetweb_project:civetweb:1.14
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cpe:2.3:a:civetweb_project:civetweb:1.8
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cpe:2.3:a:civetweb_project:civetweb:1.9
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cpe:2.3:a:civetweb_project:civetweb:1.9.1
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cpe:2.3:a:siemens:sinec_infrastructure_network_services:-
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cpe:2.3:a:siemens:sinec_infrastructure_network_services:1.0.1