CVE-2022-36836 in Charm
Summary
by MITRE • 08/05/2022
Unprotected provider vulnerability in Charm by Samsung prior to version 1.2.3 allows attackers to read connection state without permission.
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Analysis
by VulDB Data Team • 08/31/2022
The vulnerability identified as CVE-2022-36836 represents a critical security flaw within the Charm framework developed by Samsung, specifically affecting versions prior to 1.2.3. This issue manifests as an unprotected provider vulnerability that fundamentally undermines the security model of the application. The Charm framework serves as a communication layer for various Samsung applications, facilitating data exchange and connection management between different components. When a provider is left unprotected, it creates an attack surface where unauthorized entities can exploit the system to access sensitive information that should remain restricted. The vulnerability stems from inadequate access controls within the provider implementation, allowing malicious actors to bypass normal authentication and authorization mechanisms. This flaw directly impacts the confidentiality and integrity of connection state information, which typically includes session data, authentication tokens, and other sensitive metadata that governs how applications interact with each other. The vulnerability is particularly concerning because it operates at a foundational level of the application architecture, potentially enabling attackers to gain insights into active connections and their underlying states without proper authorization.
The technical exploitation of this vulnerability occurs through the manipulation of the unprotected provider component within the Charm framework. Attackers can craft specific requests or queries that target the vulnerable provider interface, effectively allowing them to read connection state information that should be restricted to authorized processes only. This type of flaw falls under the category of information disclosure vulnerabilities, specifically aligning with CWE-200 which addresses "Information Exposure" and CWE-732 which covers "Incorrect Permission Assignment for Critical Resource." The attack vector typically involves leveraging the provider's exposed interface to retrieve connection metadata, session identifiers, or other sensitive connection state details that are normally protected by proper access controls. The lack of proper input validation and authorization checks within the provider implementation creates a pathway for unauthorized access to connection state information, potentially exposing sensitive data about application interactions and user sessions. This vulnerability represents a failure in the principle of least privilege, where the provider component does not properly enforce access restrictions that would normally prevent unauthorized entities from reading protected connection state data.
The operational impact of CVE-2022-36836 extends beyond simple information disclosure, as the ability to read connection state information can enable more sophisticated attacks and compromise the overall security posture of Samsung applications. An attacker who successfully exploits this vulnerability can gain insights into active network connections, session management details, and potentially identify patterns in application usage that could aid in further exploitation attempts. The compromised connection state information might reveal authentication tokens, session identifiers, or other credentials that could be used to impersonate legitimate users or gain deeper access to the application ecosystem. This vulnerability particularly affects the integrity of the application's security model, as it undermines the trust model that governs how different components within the Samsung application suite communicate with each other. The exposure of connection state information can also facilitate man-in-the-middle attacks or session hijacking attempts, where attackers leverage the stolen connection data to impersonate legitimate application processes. Organizations relying on the Charm framework for application communication may experience cascading security issues, as the compromised connection state information could potentially be used to attack other interconnected systems within the Samsung ecosystem.
Mitigation strategies for CVE-2022-36836 must focus on implementing proper access controls and authorization mechanisms within the Charm framework's provider components. The primary remediation involves updating to version 1.2.3 or later, which includes patches that properly secure the provider implementation and enforce appropriate access controls. Organizations should conduct comprehensive security assessments of their applications that utilize the Charm framework to identify any additional vulnerabilities that may have been exposed through this flaw. The implementation of proper input validation, authentication checks, and authorization mechanisms within provider components should be enforced across all versions of the framework. Security teams should also consider implementing monitoring solutions that can detect unauthorized access attempts to provider interfaces and alert on suspicious activities related to connection state information access. This vulnerability demonstrates the importance of proper security architecture design and the need for continuous security testing of core framework components that handle sensitive data. Organizations should also review their application security practices to ensure that all components within their software stack properly implement access controls and follow security best practices. The remediation process should include thorough testing of the updated framework to ensure that the security patches do not introduce regressions or compatibility issues with existing application functionality. Additionally, developers should be trained on secure coding practices specifically related to provider implementation and access control mechanisms to prevent similar vulnerabilities from being introduced in future versions of the software.