Insecure encryption algorithm - Default encryption

Description

Some Amazon services support Key Management Service (KMS). As a good practice, it is recommended to use Customer Controlled Keys (CMK) instead of the default keys, in order to take full advantage of the KMS service.

Impact

• Obtain sensitive information in plain text
• Lose the malleability and control offered by a Customer Managed Key

Recommendation

Enable the encryption using KMS Customer Controlled Keys (CMK)

Threat

Authenticated attacker from the Internet with access to the service

Expected Remediation Time

⌚ 20 minutes.

Score

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

Base

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

Temporal

• Exploit code maturity: P
• Remediation level: O
• Report confidence: C

Result

• Vector string: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C
• Score:
  • Base: 3.1
  • Temporal: 2.8
• Severity:
  • Base: Low
  • Temporal: Low

Score 4.0

Default score using CVSS 4.0 . It may change depending on the context of the src.

Base 4.0

• Attack vector: N
• Attack complexity: H
• Attack Requirements: N
• Privileges required: L
• User interaction: N
• Confidentiality (VC): L
• Integrity (VI): N
• Availability (VA): N
• Confidentiality (SC): N
• Integrity (SI): N
• Availability (SA): N

Threat 4.0

• Exploit maturity: P

Result 4.0

• Vector string: CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
• Score:
  • CVSS-BT: 1.3
• Severity:
  • CVSS-BT: Low

Requirements

• 147.Use pre-existent mechanisms
• 151.Separate keys for encryption and signatures
• 181.Transmit data using secure protocols
• 224.Use secure cryptographic mechanisms

Fixes

• Aws
• C-Sharp
• Ruby
• Go
• Java
• Scala

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