VDB-192931 · CVE-2021-39687 · A-204421047

Google Android actuator_driver.cc HandleTransactionIoEvent out-of-bounds

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.
3.2	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Google Android. This affects the function HandleTransactionIoEvent of the file actuator_driver.cc. This manipulation causes out-of-bounds. This vulnerability is handled as CVE-2021-39687. It is possible to launch the attack on the local host. There is not any exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Google Android (Smartphone Operating System) (the affected version is unknown). It has been declared as problematic. Affected by this vulnerability is the function HandleTransactionIoEvent of the file actuator_driver.cc. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality.

The weakness was released 02/12/2022 as A-204421047. It is possible to read the advisory at source.android.com. This vulnerability is known as CVE-2021-39687 since 08/23/2021. Technical details of the vulnerability are known, but there is no available exploit.

Applying a patch is able to eliminate this problem.

Statistical analysis made it clear that VulDB provides the best quality for 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: 3.3
VulDB Meta Temp Score: 3.2

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
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

08/23/2021 🔍
02/12/2022 +173 days 🔍
02/12/2022 +0 days 🔍
02/16/2022 +4 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: A-204421047
Status: Confirmed

CVE: CVE-2021-39687 (🔍)
GCVE (CVE): GCVE-0-2021-39687
GCVE (VulDB): GCVE-100-192931
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 02/12/2022 10:28
Updated: 02/16/2022 14:50
Changes: 02/12/2022 10:28 (41), 02/16/2022 14:50 (1)
Complete: 🔍
Cache ID: 216::103