CVE-2023-42713 in SC7731E
Summary
by MITRE • 12/04/2023
In firewall 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
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 12/22/2023
The vulnerability identified as CVE-2023-42713 resides within a firewall service component where insufficient permission validation allows unauthorized applications to write permission usage records. This flaw represents a critical security oversight in the system's access control mechanisms, specifically affecting the integrity and confidentiality of permission logging data. The vulnerability stems from a missing permission check that should validate whether an application has appropriate authorization levels before allowing it to write to permission usage records. According to CWE-284, this issue manifests as an improper access control vulnerability where the system fails to properly enforce authorization checks. The security implications extend beyond simple record-keeping as the permission usage records may contain sensitive information about application behaviors and access patterns that could reveal system configuration details or user activity patterns.
The technical exploitation of this vulnerability occurs when an unprivileged application attempts to write to permission usage records without proper authorization validation. The firewall service component lacks the necessary permission verification routines that should occur before any write operations to sensitive logging areas. This missing validation creates a pathway for local information disclosure where malicious applications can potentially access or manipulate permission usage data that might contain information about other applications' access patterns, user permissions, or system security configurations. The vulnerability is particularly concerning because it requires no additional execution privileges beyond basic application execution, making it easily exploitable by any locally running process. The ATT&CK framework categorizes this as a privilege escalation technique under T1068, where an attacker leverages insufficient access control to gain unauthorized access to sensitive system information.
The operational impact of CVE-2023-42713 extends to both confidentiality and integrity aspects of the system's security posture. Local information disclosure through unauthorized permission record writing could expose sensitive metadata about application behavior, user access patterns, and system security configurations that adversaries could leverage for further attacks. The vulnerability undermines the firewall service's ability to maintain accurate and secure permission logging, potentially allowing attackers to mask their activities or gain insights into legitimate system operations. Organizations relying on this firewall service for network security monitoring may experience compromised audit trails and reduced ability to detect unauthorized access attempts. The lack of additional execution privileges required for exploitation makes this vulnerability particularly dangerous as it can be exploited by any locally running application without requiring elevated system privileges or specialized attack tools.
Mitigation strategies for CVE-2023-42713 should focus on implementing proper permission validation mechanisms within the firewall service. System administrators should ensure that all write operations to permission usage records include comprehensive authorization checks before allowing any modifications. The implementation should follow principle of least privilege where applications only receive the minimum permissions necessary for their operation. Regular security audits should validate that access control mechanisms are functioning correctly and that no unauthorized applications can write to sensitive system logging areas. Additionally, organizations should consider implementing monitoring solutions that can detect unusual permission record modifications and alert security teams to potential exploitation attempts. The vulnerability highlights the importance of proper input validation and access control enforcement in security-critical system components, aligning with security best practices outlined in NIST SP 800-53 and ISO/IEC 27001 frameworks for maintaining system integrity and confidentiality.