VDB-226872 · CVE-2021-0876 · A-270400229

Google Android PowerVR Kernel Driver PVRSRVBridgePhysmemNewRamBackedLockedPMR integer overflow

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.
6.4	$5k-$25k	0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Google Android. This affects the function PVRSRVBridgePhysmemNewRamBackedLockedPMR of the component PowerVR Kernel Driver. The manipulation results in integer overflow. This vulnerability is reported as CVE-2021-0876. The attack requires a local approach. No exploit exists. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability classified as problematic has been found in Google Android (Smartphone Operating System) (affected version not known). Affected is the function PVRSRVBridgePhysmemNewRamBackedLockedPMR of the component PowerVR Kernel Driver. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In PVRSRVBridgePhysmemNewRamBackedLockedPMR of the PowerVR kernel driver, a missing size check means there is a possible integer overflow that could allow out-of-bounds heap access. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android SoCAndroid ID: A-270400229

The weakness was disclosed 04/20/2023 as A-270400229. The advisory is shared for download at source.android.com. This vulnerability is traded as CVE-2021-0876 since 11/06/2020. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 05/14/2023). 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

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: 6.5
VulDB Meta Temp Score: 6.4

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

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
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
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/06/2020 🔍
04/20/2023 +894 days 🔍
04/20/2023 +0 days 🔍
05/14/2023 +24 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: A-270400229
Status: Confirmed

CVE: CVE-2021-0876 (🔍)
GCVE (CVE): GCVE-0-2021-0876
GCVE (VulDB): GCVE-100-226872
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 04/20/2023 07:38
Updated: 05/14/2023 10:17
Changes: 04/20/2023 07:38 (41), 05/14/2023 10:17 (11)
Complete: 🔍
Cache ID: 216::103