Description

It is possible to make requests directly to the servers IP and thus bypass Cloudflare.

Impact

- Extract technical information that Cloudflare masks and thus expand the attack surface.
- Make malicious requests that are rejected by Cloudflare.
- Perform DDoS attacks by evading the service that protects against them.

Recommendation

Redirect any request to the server to the security service.

Threat

Unauthorized user from the Internet.

Expected Remediation Time

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

Temporal

• Exploit code maturity: U
• Remediation level: X
• Report confidence: R

Result

• Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L/E:U/RL:X/RC:R
• Score:
• Base: 6.5
• Temporal: 5.7
• Severity:
• Base: Medium
• Temporal: Medium

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

Threat 4.0

• Exploit maturity: U

Result 4.0

• Vector string: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U
• Score:
• CVSS-BT: 2.7
• Severity:
• CVSS-BT: Low

Requirements

• 062.Define standard configurations
• 266.Disable insecure functionalities

Fixes

• Java
• Go
• Scala

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