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Miniflare vulnerable to Server-Side Request Forgery (SSRF)

High severity GitHub Reviewed Published Dec 29, 2023 in cloudflare/workers-sdk • Updated Dec 29, 2023

Package

npm miniflare (npm)

Affected versions

>= 3.20230821.0, < 3.20231030.2

Patched versions

3.20231030.2

Description

Impact

Sending specially crafted HTTP requests to Miniflare's server could result in arbitrary HTTP and WebSocket requests being sent from the server. If Miniflare was configured to listen on external network interfaces (as was the default in wrangler until 3.19.0), an attacker on the local network could access other local servers.

Patches

The issue was fixed in [email protected].

Workarounds

Ensure Miniflare is configured to listen on just local interfaces. This is the default behaviour, but can also be configured with the host: "127.0.0.1" option.

References

References

@mskowroncf mskowroncf published to cloudflare/workers-sdk Dec 29, 2023
Published by the National Vulnerability Database Dec 29, 2023
Published to the GitHub Advisory Database Dec 29, 2023
Reviewed Dec 29, 2023
Last updated Dec 29, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Adjacent
Attack complexity
High
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

EPSS score

0.046%
(18th percentile)

Weaknesses

CVE ID

CVE-2023-7078

GHSA ID

GHSA-fwvg-2739-22v7

Source code

Credits

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