VDB-206201 · CVE-2022-20377 · A-222339795

Google Android Fingerprint keymaster_ipc.cpp Local Privilege Escalation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Google Android. The affected element is an unknown function of the file keymaster_ipc.cpp of the component Fingerprint Handler. The manipulation leads to an unknown weakness. This vulnerability is documented as CVE-2022-20377. The attack needs to be performed locally. There is not any exploit available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Google Android (Smartphone Operating System) (affected version not known). This issue affects some unknown functionality of the file keymaster_ipc.cpp of the component Fingerprint Handler. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In TBD of keymaster_ipc.cpp, there is a possible to force gatekeeper, fingerprint, and faceauth to use a known HMAC key. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-222339795References: N/A

The weakness was released 08/11/2022 as A-222339795. The advisory is shared at source.android.com. The identification of this vulnerability is CVE-2022-20377 since 10/14/2021. Technical details are known, but no exploit is available.

Applying a patch is able to eliminate this problem.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Smartphone Operating System

Vendor

Google

Name

Android

License

free

Website

Vendor: https://www.google.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Local Privilege Escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/14/2021 🔍
08/11/2022 +301 days 🔍
08/11/2022 +0 days 🔍
08/11/2022 +0 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: A-222339795
Status: Confirmed

CVE: CVE-2022-20377 (🔍)
GCVE (CVE): GCVE-0-2022-20377
GCVE (VulDB): GCVE-100-206201
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 08/11/2022 20:43
Changes: 08/11/2022 20:43 (40)
Complete: 🔍
Cache ID: 216::103