CVE-2018-13434 Auth bypass in n/a
Attackers can bypass biometric authentication in the LINE iOS app by overriding validation logic, potentially gaining unauthorized access to user accounts.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-13434?
CVE-2018-13434 is a medium-severity authentication bypass vulnerability in Linecorp Line, published on 16 Aug 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 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
Weakness: CWE-287
Which versions are affected by CVE-2018-13434?
It affects 1 product.
Products include Linecorp Line.
How do I fix CVE-2018-13434?
No fix has been published for CVE-2018-13434 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-2018-13434 being exploited?
There is no known exploitation of CVE-2018-13434 in the wild and no public exploit code.
Other vulnerabilities in Linecorp Line
Sources
Also known as GHSA-hgw5-xjq6-qgmq.