VDB-226884 · CVE-2023-21084 · A-262892300

Google Android 13.0 filesystem.go buildPropFile weak hash

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.
5.2	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic was found in Google Android 13.0. This impacts the function buildPropFile of the file filesystem.go. The manipulation results in weak hash. This vulnerability is cataloged as CVE-2023-21084. The attack must be initiated from a local position. There is no exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Google Android 13.0 (Smartphone Operating System). Affected is the function buildPropFile of the file filesystem.go. The manipulation with an unknown input leads to a weak hash vulnerability. CWE is classifying the issue as CWE-328. The product uses an algorithm that produces a digest (output value) that does not meet security expectations for a hash function that allows an adversary to reasonably determine the original input (preimage attack), find another input that can produce the same hash (2nd preimage attack), or find multiple inputs that evaluate to the same hash (birthday attack). This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In buildPropFile of filesystem.go, there is a possible insecure hash due to an improperly used crypto. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-13Android ID: A-262892300

The weakness was shared 04/20/2023 as A-262892300. The advisory is shared for download at source.android.com. This vulnerability is traded as CVE-2023-21084 since 11/03/2022. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1600.001.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at EUVD (EUVD-2023-25252) and CERT Bund (WID-SEC-2023-0841). Once again VulDB remains the best source for vulnerability data.

Affected

Samsung Exynos
Samsung Android

Productinfo

Type

Smartphone Operating System

Vendor

Google

Name

Android

Version

13.0

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: 5.2

VulDB Base Score: 3.9
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.7
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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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: Weak hash
CWE: CWE-328 / CWE-327 / CWE-310
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

11/03/2022 🔍
04/20/2023 +167 days 🔍
04/20/2023 +0 days 🔍
09/10/2025 +874 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: A-262892300
Status: Confirmed

CVE: CVE-2023-21084 (🔍)
GCVE (CVE): GCVE-0-2023-21084
GCVE (VulDB): GCVE-100-226884
EUVD: 🔍
CERT Bund: WID-SEC-2023-0841 - Samsung Android und Samsung Exynos: Mehrere Schwachstellen

scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 04/20/2023 07:46
Updated: 09/10/2025 15:18
Changes: 04/20/2023 07:46 (42), 05/14/2023 11:34 (11), 09/04/2025 01:33 (22), 09/10/2025 15:18 (1)
Complete: 🔍
Cache ID: 216::103