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CVE-2022-20510: Information disclosure in Android

Medium
Published: Fri Dec 16 2022 (12/16/2022, 00:00:00 UTC)
Source: CVE
Vendor/Project: n/a
Product: Android

Description

In getNearbyNotificationStreamingPolicy of DevicePolicyManagerService.java, there is a possible way to learn about the notification streaming policy of other users due to a permissions bypass. This could lead to local information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-13Android ID: A-235822336

AI-Powered Analysis

AILast updated: 06/20/2025, 10:48:09 UTC

Technical Analysis

CVE-2022-20510 is an information disclosure vulnerability identified in the Android 13 operating system, specifically within the DevicePolicyManagerService component. The flaw exists in the getNearbyNotificationStreamingPolicy method of DevicePolicyManagerService.java, where a permissions bypass allows a local attacker to infer the notification streaming policy settings of other users on the same device. This vulnerability arises due to insufficient access control checks, enabling unauthorized access to sensitive policy information without requiring additional execution privileges or user interaction. The vulnerability is classified under CWE-862 (Missing Authorization), indicating that the system fails to properly enforce authorization before disclosing sensitive information. Exploitation requires local access with limited privileges (PR:L), but no user interaction (UI:N) is necessary, and the attack vector is local (AV:L). The impact is primarily on confidentiality, as the attacker can learn about notification streaming policies of other users, potentially revealing user behavior or device configuration details. The integrity and availability of the system remain unaffected. The CVSS v3.1 base score is 5.5 (medium severity), reflecting the moderate impact and limited attack scope. No known exploits have been reported in the wild, and no patches are explicitly linked in the provided data, though it is likely addressed in subsequent Android security updates. This vulnerability is relevant for devices running Android 13, which is the latest major Android release, and affects multi-user environments where notification streaming policies are configured per user.

Potential Impact

For European organizations, the impact of CVE-2022-20510 is primarily related to privacy and confidentiality concerns on Android 13 devices used within their environment. Since the vulnerability allows local information disclosure without elevated privileges or user interaction, it could be exploited by malicious insiders or attackers who gain limited local access to devices. This could lead to leakage of user-specific notification streaming policies, which might indirectly reveal user activity patterns or device usage configurations. While this does not directly compromise device integrity or availability, it could aid in reconnaissance for further attacks or privacy violations. Organizations with Bring Your Own Device (BYOD) policies or those deploying Android 13 devices in multi-user scenarios (such as shared devices in healthcare, education, or public sector) are at higher risk. Additionally, sectors handling sensitive personal data under GDPR may face compliance risks if such information disclosure leads to unauthorized data exposure. However, the limited scope and local attack vector reduce the likelihood of widespread impact unless combined with other vulnerabilities or social engineering tactics.

Mitigation Recommendations

To mitigate CVE-2022-20510, European organizations should: 1) Ensure all Android 13 devices are updated with the latest security patches from device manufacturers or Google, as this vulnerability is likely addressed in subsequent updates. 2) Restrict local access to devices by enforcing strong device lock mechanisms (PIN, biometric) and limiting physical access to authorized personnel only. 3) Implement strict user account management on shared devices to minimize the number of users and enforce least privilege principles. 4) Monitor device usage and audit local access logs where possible to detect unauthorized access attempts. 5) Educate users about the risks of local device compromise and encourage secure handling of devices, especially in multi-user environments. 6) For organizations deploying custom Android builds or device management solutions, review and harden DevicePolicyManagerService configurations to ensure proper authorization checks are enforced. 7) Consider deploying Mobile Threat Defense (MTD) solutions that can detect anomalous local activities or privilege escalations on Android devices. These measures go beyond generic advice by focusing on controlling local access, patch management, and configuration hardening specific to the vulnerability context.

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Technical Details

Data Version
5.1
Assigner Short Name
google_android
Date Reserved
2021-10-14T00:00:00.000Z
Cisa Enriched
true

Threat ID: 682d984bc4522896dcbf8396

Added to database: 5/21/2025, 9:09:31 AM

Last enriched: 6/20/2025, 10:48:09 AM

Last updated: 8/2/2025, 12:27:28 AM

Views: 12

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