جزئیات آسیب‌پذیری

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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.)

• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-39891 government-resource
• https://cwe.mitre.org/data/definitions/203.html
• https://www.twilio.com/docs/usage/security/reporting-vulnerabilities
• https://www.twilio.com/en-us/changelog
• https://www.bleepingcomputer.com/news/security/hackers-abused-api-to-verify-millions-of-authy-mfa-phone-numbers/