CVE-2018-15543 — MEDIUM (6.8)

Vulnerability 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

CVSS Score

6.8

MEDIUM

CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

PHYSICAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Telegram	Telegram	4.8.11

Related Weaknesses (CWE)

CWE-287

References

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

FAQ

What is CVE-2018-15543?

CVE-2018-15543 is a vulnerability with a CVSS score of 6.8 (MEDIUM). 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 fro...

How severe is CVE-2018-15543?

CVE-2018-15543 has been rated MEDIUM with a CVSS base score of 6.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-15543?

Check the references section above for vendor advisories and patch information. Affected products include: Telegram Telegram.