Liveness face authentication bypass - lack of valitadion

2019-05-15 / 2019-05-21

Joao Pimenta (BR)

Risk: High

Local: No

Remote: Yes

CVE: CVE-2019-9196

CWE: CWE-287

CVSS Base Score: 5/10

Impact Subscore: 2.9/10

Exploitability Subscore: 10/10

Exploit range: Remote

Attack complexity: Low

Authentication: No required

Confidentiality impact: None

Integrity impact: Partial

Availability impact: None

The Face authentication component in Aware mobile liveness 2.2.1 sdk 2.2.0 for Knomi allows a Biometrical Liveness authentication bypass via parameter tampering of the /knomi/analyze security_level dropping it down and getting an approval score (100%) back from the server.

The exploitation is also possible reverse engineering the sdk base changing the security_level parameter to achieve the OK from the server. The server does not properly validate the value sent by the SDK.

[Vendor of Product]
Aware - https://www.aware.com/

Exploit:

https://drive.google.com/file/d/1-0X8foCwjR3RmL_7UJcgOFYrwKOjYZQL/view

See this note in RAW Version

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Liveness face authentication bypass - lack of valitadion

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