Unsanitized user input in XML External Entity

• Rule ID: go_lang_xml_external_entity_vulnerability
• Languages: go
• Source: xml_external_entity_vulnerability.yml

Description

Avoid parsing untrusted data as XML. Such data could include URIs that resolve to resources that are outside of the current context, leading to XML External Entity (XXE) injection.

Remediations

• Do use Go’s standard encoding/xml package, which does not process external entities by default.

• Do always validate and sanitize user-provided XML input.

• Do not use third-party XML parsers or custom configurations that enable entity expansion or DTD parsing.

Resources

• OWASP XML External Entity (XXE) prevention cheat sheet
• Golang and XXE - OWASP Presentation

Associated CWE

• CWE-611: Improper Restriction of XML External Entity Reference

OWASP Top 10

• A05:2021 - Security Misconfiguration

Configuration

To skip this rule during a scan, use the following flag

bearer scan /path/to/your-project/ --skip-rule=go_lang_xml_external_entity_vulnerability

To run only this rule during a scan, use the following flag

bearer scan /path/to/your-project/ --only-rule=go_lang_xml_external_entity_vulnerability