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The application load balancer is not set to drop invalid headers Affecting ELB service in AWS

0.0
medium
0
10
    Severity Framework Snyk CCSS
    Rule category Network / Best Practices

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    Frameworks
    CIS-Controls CSA-CCM
  • Snyk ID SNYK-CC-00345
  • credit Snyk Research Team
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Description

Maliciously crafted headers may be accepted by the load balancer.

How to fix?

Set Properties.LoadBalancerAttributes.Key to routing.http.drop_invalid_header_fields.enabled and Properties.LoadBalancerAttributes.Value to true.

CloudFormation

    Terraform