Google Android 11.0/12.0/13.0 InstallPackageHelper.java verifyReplacingVersionCode Local Privilege Escalation

CVSS Meta Temp Score
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Google Android 11.0/12.0/13.0. This affects the function verifyReplacingVersionCode of the file InstallPackageHelper.java. Executing a manipulation can lead to an unknown weakness. This vulnerability is tracked as CVE-2023-21116. The attack is restricted to local execution. No exploit exists. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability classified as problematic was found in Google Android 11.0/12.0/13.0 (Smartphone Operating System). This vulnerability affects the function verifyReplacingVersionCode of the file InstallPackageHelper.java. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

In verifyReplacingVersionCode of InstallPackageHelper.java, there is a possible way to downgrade system apps below system image version due to a logic error in the code. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12 Android-12L Android-13Android ID: A-256202273

The weakness was disclosed 05/16/2023 as A-256202273. The advisory is shared for download at source.android.com. This vulnerability was named CVE-2023-21116 since 11/03/2022. There are known technical details, but no exploit is available.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2023-25284). Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

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

NVD Base Score: 6.7
NVD Vector: 🔍

CNA Base Score: 6.7
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Local Privilege Escalation
CWE: Unknown
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

11/03/2022 🔍
05/16/2023 +193 days 🔍
05/16/2023 +0 days 🔍
09/13/2025 +851 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: A-256202273
Status: Confirmed

CVE: CVE-2023-21116 (🔍)
GCVE (CVE): GCVE-0-2023-21116
GCVE (VulDB): GCVE-100-229132
EUVD: 🔍
scip Labs: https://www.scip.ch/en/?labs.20150917

Entryinfo

Created: 05/16/2023 08:19
Updated: 09/13/2025 17:07
Changes: 05/16/2023 08:19 (42), 06/09/2023 12:54 (11), 01/25/2025 03:17 (25), 09/13/2025 17:07 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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