CVE-2024-39891

In the Twilio Authy API, accessed by Authy Android before 25.1.0 and Authy iOS before 26.1.0, an unauthenticated endpoint provided access to certain phone-number data, as exploited in the wild in June 2024. Specifically, the endpoint accepted a stream of requests containing phone numbers, and responded with information about whether each phone number was registered with Authy. (Authy accounts were not compromised, however.)

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://cwe.mitre.org/data/definitions/203.html	Technical Description
https://www.bleepingcomputer.com/news/security/hackers-abused-api-to-verify-millions-of-authy-mfa-phone-numbers/	Press/Media Coverage
https://www.twilio.com/docs/usage/security/reporting-vulnerabilities	Product
https://www.twilio.com/en-us/changelog	Product Release Notes

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:twilio:authy::::::iphone_os::*
	cpe:2.3:a:twilio:authy_authenticator::::::android::*

History

No history.

Information

Published : 2024-07-02 18:15

Updated : 2024-07-24 14:38

NVD link : CVE-2024-39891

Mitre link : CVE-2024-39891

CVE.ORG link : CVE-2024-39891

JSON object : View

Products Affected

twilio

authy_authenticator
authy

CWE

CWE-203

Observable Discrepancy

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