CVE-2020-27304
9.8 · CRITICALOverview
CVE-2020-27304 is a critical-severity vulnerability affecting civetweb_project civetweb. It was published on October 21, 2021 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
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
Remediation
Check the references section for vendor advisories and patches from civetweb_project. Update civetweb to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| civetweb_project | civetweb | >= 1.8, < 1.15 | Affected |
| siemens | sinec_infrastructure_network_services | >= 0, < 1.0.1.1 | Affected |
References
Frequently Asked Questions
What is CVE-2020-27304?
CVE-2020-27304 is a critical-severity vulnerability affecting civetweb_project civetweb. It was published on October 21, 2021 and has a CVSS 3.1 base score of 9.8 (CRITICAL).
How severe is CVE-2020-27304?
This vulnerability has a CVSS 3.1 base score of 9.8, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2020-27304?
Check the references section for vendor advisories and patches from civetweb_project. Update civetweb to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2020-27304?
CyberStrike's AI-powered security agents can automatically detect CVE-2020-27304 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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