CVE-2022-33709 in Galaxy Store
Summary
by MITRE • 07/12/2022
Improper input validation vulnerability in ApexPackageInstaller in Galaxy Store prior to version 4.5.41.8 allows local attackers to launch activities as Galaxy Store privilege.
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Analysis
by VulDB Data Team • 07/23/2022
The vulnerability identified as CVE-2022-33709 represents a critical improper input validation flaw within the ApexPackageInstaller component of Samsung Galaxy Store applications prior to version 4.5.41.8. This weakness resides in the privilege escalation mechanism that governs how the system handles activity launches within the application framework. The vulnerability specifically affects the Galaxy Store's package installation and management functionality, creating a pathway for local attackers to exploit the system's trust model and elevate their privileges to those of the Galaxy Store application itself. The flaw stems from insufficient validation of input parameters when processing package installation requests, allowing malicious actors to manipulate the system into executing unauthorized activities with elevated privileges.
The technical implementation of this vulnerability demonstrates a classic privilege escalation vector through improper input handling. When the ApexPackageInstaller processes package installation requests, it fails to properly validate the intent parameters and activity launch requests that are passed to it. This validation gap enables attackers to craft specially formatted package installation requests that bypass normal security checks. The vulnerability operates at the application level within the Android framework, leveraging the trust relationship between the system components and the Galaxy Store application. According to CWE classification, this represents a weakness in input validation that falls under CWE-20, which encompasses improper input validation issues that can lead to various security consequences including privilege escalation and unauthorized access. The attack scenario involves local adversaries who already have access to the device but lack the necessary privileges to execute certain system-level activities.
The operational impact of CVE-2022-33709 extends beyond simple privilege escalation, potentially enabling attackers to perform actions that could compromise the entire device security posture. Once an attacker successfully exploits this vulnerability, they can launch any activity within the Galaxy Store application context with elevated privileges, potentially gaining access to sensitive device functions, user data, or system resources that should normally be restricted. The implications include unauthorized access to device settings, potential data exfiltration, and the ability to install malicious applications with system-level privileges. This vulnerability particularly affects Samsung Galaxy devices running affected versions of the Galaxy Store application, creating a widespread security concern across the Android ecosystem where such privilege escalation vulnerabilities can lead to complete device compromise. The ATT&CK framework categorizes this as a privilege escalation technique under T1068, where adversaries leverage weaknesses in application security to gain higher-level permissions.
Mitigation strategies for CVE-2022-33709 focus primarily on updating to the patched version of the Galaxy Store application, specifically version 4.5.41.8 or later, which addresses the input validation issues in the ApexPackageInstaller component. Organizations and users should immediately apply the security update provided by Samsung to close this vulnerability. Additionally, system administrators should consider implementing application whitelisting policies and monitoring for suspicious activity related to package installation requests. The vulnerability highlights the importance of proper input validation in Android applications and reinforces the need for security-conscious development practices. Network security teams should monitor for potential exploitation attempts through unusual package installation patterns or unauthorized activity launches. Device manufacturers and security vendors should also consider implementing additional runtime protections and behavioral monitoring to detect and prevent exploitation attempts of similar input validation vulnerabilities. The remediation process requires not only updating the vulnerable application but also ensuring that all related system components maintain proper validation and verification of input parameters to prevent similar security weaknesses from being exploited in other parts of the application ecosystem.