Stored cross-site scripting (XSS)

Description

It is possible to persistently inject JavaScript code into the application fields. This could allow an attacker to compromise the session of any user who enters the platform or to distribute malicious software.

Impact

Inject malicious JavaScript code persistently.

Recommendation

Filter the information that receives and sends the application using white lists.

Threat

Authorized attacker from the Internet.

Expected Remediation Time

⌚ 45 minutes.

Score

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

Base

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

Temporal

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

Result

• Vector string: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:X/RL:X/RC:X
• Score:
  • Base: 5.4
  • Temporal: 5.4
• Severity:
  • Base: Medium
  • Temporal: Medium

Requirements

• 029.Cookies with security attributes
• 173.Discard unsafe inputs

Fixes

• Ruby
• Elixir
• C-Sharp
• PHP
• TypeScript
• Java
• Go
• Scala

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