CVE-2018-15543

** DISPUTED ** 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.

CVSS v3.0 6.8 MEDIUM
CVSS v2.0 4.6 MEDIUM

6.8^/10

CVSS v3.0 : MEDIUM

Vector : AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploitability : 0.9 / Impact : 5.9

Attack Vector PHYSICAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.6^/10

CVSS v2.0 : MEDIUM

Vector : AV:L/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://gist.github.com/tanprathan/d286c0d5b02e344606287774304a1ccd	Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:telegram:telegram:4.8.11:*:*:*:*:android:*:*

Information

Published : 2018-10-09 10:29

Updated : 2018-11-23 20:29

NVD link : CVE-2018-15543

Mitre link : CVE-2018-15543

JSON object : View

CWE

CWE-287

Improper Authentication

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Products Affected

telegram

telegram

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