CVE-2023-30919 in SC9863A
Summary
by MITRE • 07/12/2023
In messaging service, there is 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 • 07/30/2023
The vulnerability identified as CVE-2023-30919 represents a critical authorization flaw within a messaging service component that exposes sensitive information through a missing permission check mechanism. This issue resides in the service's access control implementation where proper validation of user privileges is absent, allowing unauthorized local access to confidential data. The vulnerability specifically affects systems where the messaging service operates with elevated privileges and maintains sensitive communication channels that should be restricted to authorized users only. The absence of permission verification creates an attack surface where local processes or users can potentially access information that should remain protected. This flaw operates at the core of the service's security model, undermining the fundamental principle of least privilege that governs secure system design. The vulnerability is classified under CWE-284 which specifically addresses improper access control, making it a direct violation of established security standards for access management.
The technical implementation of this vulnerability stems from the messaging service's failure to validate whether requesting processes possess adequate permissions before granting access to sensitive information. This missing validation occurs during the information retrieval phase of the service, where the system should enforce proper authorization checks but instead allows unrestricted access. The flaw does not require any additional execution privileges or elevated user rights to exploit, meaning that any local user or process can potentially access the protected information. The vulnerability manifests as a direct information disclosure issue where the service fails to implement proper access controls, allowing unauthorized entities to read or extract confidential data from the messaging system. This type of flaw typically occurs when developers assume that the service's own processes inherently possess the necessary permissions, or when access control mechanisms are simply omitted during development. The lack of proper input validation and privilege checking creates a pathway for data leakage that can compromise the confidentiality of sensitive communications.
The operational impact of CVE-2023-30919 extends beyond simple information disclosure to potentially enable broader compromise of the system's security posture. Local information disclosure can provide attackers with insights into communication patterns, user activities, or system configurations that may facilitate subsequent attacks. The vulnerability can be exploited through various local means including process injection, direct system calls, or by leveraging other local privilege escalation techniques that may be present in the system. This information can be particularly valuable for attackers seeking to understand the internal workings of the messaging service or to identify potential targets for further exploitation. The impact is amplified when the messaging service handles sensitive data such as authentication tokens, communication metadata, or system configuration details that could be used to compromise other system components. The vulnerability's exploitation requires minimal effort and provides substantial information gain, making it an attractive target for threat actors seeking to establish persistent access or conduct advanced persistent threat operations.
Mitigation strategies for CVE-2023-30919 must focus on implementing robust access control mechanisms and proper permission validation throughout the messaging service architecture. Organizations should immediately implement permission checks at all access points to ensure that only authorized processes can retrieve sensitive information from the messaging service. The fix should involve comprehensive code review and implementation of proper authorization frameworks that validate user privileges before granting access to protected resources. System administrators should also implement monitoring and logging mechanisms to detect unauthorized access attempts to the messaging service, which can help identify potential exploitation attempts. The remediation process should include thorough testing of access control mechanisms to ensure that all legitimate access paths remain functional while unauthorized access is properly blocked. Additionally, organizations should consider implementing the principle of least privilege more strictly, ensuring that the messaging service operates with minimal required privileges and that all access requests are properly validated. This vulnerability highlights the critical importance of adhering to security best practices and implementing comprehensive access control measures as outlined in various cybersecurity frameworks including those referenced in the ATT&CK framework where such information disclosure vulnerabilities are categorized under initial access and privilege escalation techniques.