Google Android out-of-bounds write

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 (≈)
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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.
4.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Google Android and classified as critical. This affects an unknown part. The manipulation results in out-of-bounds write. This vulnerability was named CVE-2021-39721. The attack needs to be approached locally. There is no available exploit. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability classified as critical has been found in Google Android (Smartphone Operating System) (the affected version is unknown). Affected is an unknown code. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. CWE is classifying the issue as CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 03/17/2022 as A-195726151. The advisory is available at source.android.com. This vulnerability is traded as CVE-2021-39721 since 08/23/2021. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 03/17/2022). It is expected to see the exploit prices for this product increasing in the near future.

Applying a patch is able to eliminate this problem.

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Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.2
VulDB Meta Temp Score: 4.0

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
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: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/23/2021 🔍
03/17/2022 +206 days 🔍
03/17/2022 +0 days 🔍
03/19/2022 +2 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: A-195726151
Status: Confirmed

CVE: CVE-2021-39721 (🔍)
GCVE (CVE): GCVE-0-2021-39721
GCVE (VulDB): GCVE-100-195318
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 03/17/2022 08:01
Updated: 03/19/2022 15:51
Changes: 03/17/2022 08:01 (39), 03/19/2022 15:51 (1)
Complete: 🔍
Cache ID: 216::103

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