CVE-2018-13434 — MEDIUM (6.3)

Vulnerability Description

An issue was discovered in the LINE jp.naver.line application 8.8.0 for iOS. The LAContext class for Biometric (TouchID) validation allows authentication bypass by overriding the LAContext return Boolean value to be "true" because the kSecAccessControlUserPresence protection mechanism is not used. 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 iOS devices on which a jailbreak has occurred

CVSS Score

6.3

MEDIUM

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

Attack Vector

PHYSICAL

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Linecorp	Line	8.8.0

Related Weaknesses (CWE)

CWE-287

References

https://gist.github.com/tanprathan/f5133651e438b2ad1b39172d52b56115ExploitThird Party Advisory
https://gist.github.com/tanprathan/f5133651e438b2ad1b39172d52b56115ExploitThird Party Advisory

FAQ

What is CVE-2018-13434?

CVE-2018-13434 is a vulnerability with a CVSS score of 6.3 (MEDIUM). An issue was discovered in the LINE jp.naver.line application 8.8.0 for iOS. The LAContext class for Biometric (TouchID) validation allows authentication bypass by overriding the LAContext return Bool...

How severe is CVE-2018-13434?

CVE-2018-13434 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-13434?

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