Google Android 11.0/12.0/13.0 PackageInstallerSession.java Local Privilege Escalation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Google Android 11.0/12.0/13.0. This affects an unknown part of the file PackageInstallerSession.java. Performing a manipulation results in an unknown weakness. This vulnerability is cataloged as CVE-2023-21099. The attack must be initiated from a local position. There is no exploit available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability classified as problematic has been found in Google Android 11.0/12.0/13.0 (Smartphone Operating System). This affects an unknown functionality of the file PackageInstallerSession.java. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In multiple methods of PackageInstallerSession.java, there is a possible way to start foreground services from the background due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-11 Android-12 Android-12L Android-13Android ID: A-243377226

The weakness was shared 04/20/2023 as A-243377226. It is possible to read the advisory at source.android.com. This vulnerability is uniquely identified as CVE-2023-21099 since 11/03/2022. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/11/2025). 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.

The vulnerability is also documented in the databases at EUVD (EUVD-2023-25267) and CERT Bund (WID-SEC-2023-0841). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Samsung Exynos
  • Samsung Android

Productinfo

Type

Vendor

Name

Version

License

Website

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

AVACAuCIA
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💳💳💳💳💳💳
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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 🔍
04/20/2023 +167 days 🔍
04/20/2023 +0 days 🔍
09/11/2025 +874 days 🔍

Sourcesinfo

Vendor: google.com

Advisory: A-243377226
Status: Confirmed

CVE: CVE-2023-21099 (🔍)
GCVE (CVE): GCVE-0-2023-21099
GCVE (VulDB): GCVE-100-226899
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 07:50
Updated: 09/11/2025 00:03
Changes: 04/20/2023 07:50 (40), 05/14/2023 13:17 (11), 09/04/2025 03:34 (21), 09/11/2025 00:03 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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