CVE-2018-15543

An issue was discovered in the org.telegram.messenger application 4.8.11 for Android. The FingerprintManager class for Biometric validation allows authentication bypass through the callback method from onAuthenticationFailed to onAuthenticationSucceeded with null, because the fingerprint API in conjunction with the Android keyGenerator class is not implemented. In other words, an attacker could authenticate with an arbitrary fingerprint. NOTE: the vendor indicates that this is not an attack of interest within the context of their threat model, which excludes Android devices on which rooting has occurred

• CWE-287

• https://gist.github.com/tanprathan/d286c0d5b02e344606287774304a1ccdThird Party Advisory
• https://gist.github.com/tanprathan/d286c0d5b02e344606287774304a1ccdThird Party Advisory

Published

Oct 9, 2018

Last Modified

Jun 17, 2026

Status

Modified

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