LINE jp.naver.line 8.8.0 on iOS Protection Mechanism LAContext Fingerprint improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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6.1$0-$5k0.00

A vulnerability was found in LINE jp.naver.line 8.8.0 on iOS (iOS App Software). It has been declared as critical. Affected by this vulnerability is the function LAContext of the component Protection Mechanism. The manipulation as part of a Fingerprint leads to a improper authentication vulnerability. The CWE definition for the vulnerability is CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

** DISPUTED ** 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.

The weakness was presented 08/16/2018 (Website). It is possible to read the advisory at gist.github.com. This vulnerability is known as CVE-2018-13434 since 07/08/2018. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The real existence of this vulnerability is still doubted at the moment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

See 122985 and 122984 for similar entries.

Productinfo

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Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.1
VulDB Meta Temp Score: 6.1

VulDB Base Score: 5.9
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.3
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/08/2018 🔍
08/16/2018 +39 days 🔍
08/16/2018 +0 days 🔍
08/17/2018 +1 days 🔍
03/16/2020 +577 days 🔍

Sourcesinfo

Advisory: gist.github.com
Status: Not defined
Disputed: 🔍

CVE: CVE-2018-13434 (🔍)
See also: 🔍

Entryinfo

Created: 08/17/2018 06:43
Updated: 03/16/2020 10:54
Changes: 08/17/2018 06:43 (42), 03/16/2020 10:54 (19)
Complete: 🔍

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