go.lang.security.audit.net.dynamic-httptrace-clienttrace.dynamic-httptrace-clienttrace

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Detected a potentially dynamic ClientTrace. This occurred because semgrep could not find a static definition for '$TRACE'. Dynamic ClientTraces are dangerous because they deserialize function code to run when certain Request events occur, which could lead to code being run without your knowledge. Ensure that your ClientTrace is statically defined.

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Defintion

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rules:
  - id: dynamic-httptrace-clienttrace
    message: Detected a potentially dynamic ClientTrace. This occurred because
      semgrep could not find a static definition for '$TRACE'. Dynamic
      ClientTraces are dangerous because they deserialize function code to run
      when certain Request events occur, which could lead to code being run
      without your knowledge. Ensure that your ClientTrace is statically
      defined.
    metadata:
      cwe:
        - "CWE-913: Improper Control of Dynamically-Managed Code Resources"
      owasp:
        - A01:2021 - Broken Access Control
      references:
        - https://github.com/returntocorp/semgrep-rules/issues/518
      category: security
      technology:
        - go
      confidence: MEDIUM
      subcategory:
        - vuln
      likelihood: LOW
      impact: LOW
      license: Commons Clause License Condition v1.0[LGPL-2.1-only]
    patterns:
      - pattern-not-inside: |
          package $PACKAGE
          ...
          &httptrace.ClientTrace { ... }
          ...
      - pattern: httptrace.WithClientTrace($ANY, $TRACE)
    severity: WARNING
    languages:
      - go

Examples

dynamic-httptrace-clienttrace.go

package uhoh

import (
	"context"
	"net"
	"net/http"
	"net/http/httptrace"
)

func WithTrace(req *http.Request, trace *httptrace.ClientTrace) *http.Request {
    // ruleid: dynamic-httptrace-clienttrace
	return req.WithContext(httptrace.WithClientTrace(req.Context(), trace))
}