CVE-2018-15543

MEDIUM

Telegram 4.8.11 - Authentication Bypass via FingerprintManager Callback

Title source: llm
STIX 2.1

Description

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

References (1)

Core 1
Core References

Scores

CVSS v3 6.8
EPSS 0.0043
EPSS Percentile 34.3%
Attack Vector PHYSICAL
CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-287
Status published
Products (1)
telegram/telegram 4.8.11
Published Oct 09, 2018
Tracked Since Feb 18, 2026