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Failure to validate message's signature

Moderate
Secreto31126 published GHSA-mwhf-vhr5-7j23 Sep 12, 2024

Package

npm whatsapp-api-js (npm)

Affected versions

4.0.0, 4.0.1, 4.0.2

Patched versions

4.0.3

Description

Impact

Incorrect Access Control, anyone using the post or verifyRequestSignature methods to handle messages is impacted.

Patches

Patched in version 4.0.3.

Workarounds

It's possible to check the payload validation using the WhatsAppAPI.verifyRequestSignature and expect false when the signature is valid.

function doPost(payload, header_signature) {
    if (whatsapp.verifyRequestSignature(payload.toString(), header_signature) {
        throw 403;
    }
    
    // Now the payload is correctly verified
    whatsapp.post(payload);
}

References

#371

Severity

Moderate

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
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
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:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

CVE ID

CVE-2024-45607

Weaknesses