Business information leak - JWT

Description

Business information is obtained within the JWT, such as:

• Username
• Password

Impact

• Get the username from the JWT.
• Get the encrypted password from the JWT.

Recommendation

Remove the sensitive information from the JWT and manage this kind of information in the server-side.

Threat

Anonymous attacker from the Internet.

Expected Remediation Time

⌚ 30 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: N
• User interaction: N
• Scope: U
• Confidentiality: L
• Integrity: N
• Availability: N

Temporal

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

Result

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

Requirements

• 176.Restrict system objects
• 177.Avoid caching and temporary files
• 261.Avoid exposing sensitive information
• 300.Mask sensitive data

Fixes

• Scala
• C-Sharp
• Dart
• TypeScript
• Python
• Java
• Elixir
• Go

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