CVE-2023-42697 in SC7731E
Summary
by MITRE • 12/04/2023
In omacp service, there is a possible way to write permission usage records of an app due to a missing permission check. This could lead to local information disclosure with no additional execution privileges needed
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Analysis
by VulDB Data Team • 12/22/2023
The vulnerability identified as CVE-2023-42697 resides within the omacp service component, representing a critical authorization flaw that undermines the security posture of affected systems. This issue manifests through a missing permission check mechanism that allows unauthorized applications to write permission usage records, effectively bypassing the intended access controls. The omacp service typically manages operational management and configuration tasks within Android-based systems, making it a prime target for attackers seeking to escalate privileges or gather sensitive information. The vulnerability's classification aligns with CWE-284 which addresses improper access control issues, specifically focusing on inadequate permission validation mechanisms that permit unauthorized data modification.
The technical exploitation of this vulnerability occurs through a fundamental flaw in the permission validation process where the service fails to properly verify whether an application has the necessary authorization to write permission usage records. This missing check creates a pathway for any application to potentially modify or create permission logs without proper authentication or authorization. Attackers can leverage this weakness to manipulate system records, potentially hiding malicious activities or creating false audit trails that obscure security incidents. The vulnerability's impact is amplified by the fact that no additional execution privileges are required for exploitation, making it particularly dangerous as it can be triggered through standard application operations without requiring elevated system access.
The operational impact of CVE-2023-42697 extends beyond simple information disclosure to encompass potential system integrity compromise and audit trail manipulation. Local information disclosure occurs when unauthorized applications can access or modify permission-related data that should remain protected within the system's security boundaries. This vulnerability can enable attackers to gather sensitive information about other applications' permissions, potentially revealing system configurations, user behaviors, or security policies that should remain confidential. The implications align with ATT&CK technique T1070.006 which covers "Indicator Removal on Host: File Deletion", as the vulnerability allows for unauthorized modification of system records that could be used to cover tracks or manipulate security monitoring systems.
Mitigation strategies for this vulnerability should focus on implementing proper permission validation mechanisms within the omacp service and related components. System administrators should ensure that all applications attempting to write permission usage records undergo rigorous authentication and authorization checks before any data modification occurs. The fix typically involves adding explicit permission verification routines that validate application credentials against established security policies and access control lists. Organizations should also implement monitoring solutions that can detect unauthorized modifications to permission records and alert security teams to potential exploitation attempts. Regular security audits of system services and components should be conducted to identify similar permission validation gaps that could create similar vulnerabilities. The remediation process should follow established security best practices outlined in NIST SP 800-53 controls related to access control and system monitoring to ensure comprehensive protection against such authorization bypass scenarios.