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Insecure service configuration - ELB


A misconfiguration or default setting on Elastic Load Balancers that can cause to unintentionally increase the attack surface of the company cloud infrastructure.


  • Result in the connection between load balancer and server being exploited.
  • The front-end connection between the client and the load balancer is vulnerable to eavesdropping and man-in-the-middle (MitM) attacks.


  • Application load balancers should use acceptable policies.
  • Create a custom ELB SSL security policy that contains secure ciphers.
  • Strongly advised that the load balancer uses a secure listener.


Unauthorized attacker from adjacent network performing a MitM.

Expected Remediation Time

⌚ minutes.


Default score using CVSS 3.1. It may change depending on the context of the src.


  • Attack vector: A
  • Attack complexity: H
  • Privileges required: N
  • User interaction: R
  • Scope: U
  • Confidentiality: L
  • Integrity: L
  • Availability: N


  • Exploit code madurity: X
  • Remediation level: X
  • Report confidence: X


  • Vector string: CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:X/RL:X/RC:X
  • Score:
    • Base: 3.7
    • Temporal: 3.7
  • Severity:
    • Base: Low
    • Temporal: Low



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