VDB-171110 · CVE-2021-0456 · A-174769927

Google Android Citadel Chip Firmware 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 (≈) 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 critical, was found in Google Android. Impacted is an unknown function of the component Citadel Chip Firmware. Such manipulation leads to out-of-bounds write. This vulnerability is referenced as CVE-2021-0456. The attack can only be performed from a local environment. No exploit is available. It is best practice to apply a patch to resolve this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Google Android (Smartphone Operating System) (affected version not known). Affected by this issue is some unknown functionality of the component Citadel Chip Firmware. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability.

The weakness was published 03/11/2021 as A-174769927. The advisory is available at source.android.com. This vulnerability is handled as CVE-2021-0456. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 03/31/2021). 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: 6.7
VulDB Meta Temp Score: 6.6

VulDB Base Score: 6.7
VulDB Temp Score: 6.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.7
NVD Vector: 🔍

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: 🔍

NVD Base Score: 🔍

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: 🔍

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

11/06/2020 🔍
03/11/2021 +125 days 🔍
03/11/2021 +0 days 🔍
03/31/2021 +20 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: A-174769927
Status: Confirmed

CVE: CVE-2021-0456 (🔍)
GCVE (CVE): GCVE-0-2021-0456
GCVE (VulDB): GCVE-100-171110
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 03/11/2021 12:00
Updated: 03/31/2021 12:13
Changes: 03/11/2021 12:00 (39), 03/31/2021 12:10 (5), 03/31/2021 12:13 (16)
Complete: 🔍
Cache ID: 216::103