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CVE-2022-20505: Elevation of privilege 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 openFile of CallLogProvider.java, there is a possible permission bypass due to a path traversal error. This could lead to local escalation of privilege with User execution privileges needed. User interaction is not needed for exploitationProduct: AndroidVersions: Android-13Android ID: A-225981754

AI-Powered Analysis

AILast updated: 06/20/2025, 10:48:46 UTC

Technical Analysis

CVE-2022-20505 is a security vulnerability identified in the Android 13 operating system, specifically within the CallLogProvider component's openFile method. The vulnerability arises due to a path traversal flaw (CWE-22), which allows an attacker to bypass permission checks by manipulating file paths. This flaw can be exploited locally by a user with existing execution privileges on the device to escalate their privileges beyond their current level. The vulnerability does not require any user interaction to be exploited, which increases the risk of automated or stealthy attacks. The path traversal error enables an attacker to access or manipulate files outside the intended directory scope, potentially leading to unauthorized access to sensitive data or modification of critical system files. The CVSS 3.1 base score is 6.7, categorized as medium severity, reflecting the balance between the requirement for local access with high privileges and the significant impact on confidentiality, integrity, and availability if exploited. No known exploits have been reported in the wild, and no official patches are linked in the provided data, indicating that mitigation may rely on vendor updates or workarounds. The vulnerability affects only Android 13, which is the latest major Android release, implying that devices running this version are at risk if unpatched.

Potential Impact

For European organizations, the impact of CVE-2022-20505 could be significant, particularly for enterprises that rely on Android 13 devices for business operations, including mobile workforce management, secure communications, and access to corporate resources. Successful exploitation could allow a malicious insider or compromised user device to escalate privileges locally, potentially leading to unauthorized access to sensitive corporate data, modification of call logs or other system files, and disruption of device functionality. This could compromise the confidentiality and integrity of corporate communications and data, and in some cases, availability if system stability is affected. Given the widespread use of Android devices in Europe across various sectors such as finance, healthcare, and government, the vulnerability poses a risk to data protection compliance (e.g., GDPR) and operational security. However, the requirement for local access with high privileges limits remote exploitation, reducing the risk from external attackers but increasing concern over insider threats or physical device compromise.

Mitigation Recommendations

To mitigate CVE-2022-20505, European organizations should prioritize the following specific actions: 1) Ensure all Android 13 devices are updated promptly with the latest security patches from device manufacturers or carriers, as vendors typically release fixes for such vulnerabilities. 2) Implement strict device management policies using Mobile Device Management (MDM) solutions to restrict installation of untrusted applications and enforce least privilege principles, minimizing the risk of privilege escalation. 3) Monitor and audit device usage to detect unusual local activity that could indicate exploitation attempts, such as unauthorized access to call logs or system files. 4) Educate users about the risks of installing unverified apps or granting excessive permissions, reducing the chance of initial compromise. 5) For high-security environments, consider restricting Android 13 device usage or isolating sensitive operations from mobile platforms until patches are confirmed deployed. 6) Collaborate with vendors to obtain timely updates and verify patch deployment status across the device fleet. These measures go beyond generic advice by focusing on patch management, device control, user behavior, and monitoring tailored to the nature of this local privilege escalation vulnerability.

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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: 682d984bc4522896dcbf8352

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

Last enriched: 6/20/2025, 10:48:46 AM

Last updated: 8/13/2025, 9:05:05 AM

Views: 14

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