CVE-2018-15543 Auth bypass in n/a
Attackers can bypass biometric authentication in the Telegram Android app by manipulating callback methods, allowing unauthorized access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-15543?
CVE-2018-15543 is a medium-severity authentication bypass vulnerability in n/a, published on 9 Oct 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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
Weakness: CWE-287
Which versions are affected by CVE-2018-15543?
It affects 1 product.
Products include Telegram Telegram.
How do I fix CVE-2018-15543?
No fix has been published for CVE-2018-15543 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2018-15543 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2018-15543 exists.
Other vulnerabilities in n/a
Sources
Also known as GHSA-4cfw-g6m2-82xj.