Medium severity · published Oct 9, 2018
CVE-2018-15543
An issue was discovered in the org.telegram.messenger application 4.8.11 for Android
6.8
CVSS
0.4%
EPSS
No
On KEV
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 vector
CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Physical
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TE
Telegram · Telegram
4.8.11 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-15543
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-15543
Third Party Advisory
https://gist.github.com/tanprathan/d286c0d5b02e344606287774304a1ccd
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