CVE-2023-30916 in SC9863A
Summary
by MITRE • 07/12/2023
In DMService, there is a possible missing permission check. This could lead to local escalation of privilege with no additional execution privileges.
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Analysis
by VulDB Data Team • 08/02/2023
The vulnerability identified as CVE-2023-30916 resides within the DMService component, representing a critical security flaw that undermines the principle of least privilege in system access controls. This issue manifests as a missing permission check that allows unauthorized local users to escalate their privileges without requiring additional execution rights, effectively creating a backdoor for privilege elevation within the system architecture.
The technical flaw stems from inadequate authorization validation mechanisms within the DMService implementation, where proper access control checks are either absent or improperly enforced. This missing permission verification creates a pathway for malicious actors or compromised local accounts to exploit the service and gain elevated system privileges. The vulnerability operates at the kernel or system service level where proper privilege boundaries should exist but have been circumvented through the absence of mandatory access controls.
From an operational impact perspective, this vulnerability presents a significant risk to system integrity and security posture. Local privilege escalation vulnerabilities are particularly dangerous because they can be exploited by attackers who have already gained some level of system access, such as through social engineering, phishing attacks, or other initial compromise techniques. Once exploited, the attacker can leverage elevated privileges to access sensitive system resources, modify critical files, install persistent backdoors, or exfiltrate confidential data without detection.
The vulnerability aligns with CWE-284, which addresses improper access control issues, and represents a direct violation of the principle of least privilege that is fundamental to secure system design. According to ATT&CK framework, this vulnerability maps to T1068, which covers local privilege escalation techniques, and potentially T1548.001 for privilege escalation through abuse of system permissions. The lack of proper permission checking creates an exploitable condition that can be leveraged by threat actors to move laterally within the system or establish persistent access.
Mitigation strategies should focus on implementing comprehensive access control mechanisms within the DMService component, including mandatory access controls, proper privilege validation checks, and enforcement of least privilege principles. System administrators should immediately apply vendor-provided patches or updates that address the missing permission checks. Additionally, security monitoring should be enhanced to detect unusual privilege escalation activities, and system configurations should be reviewed to ensure that only authorized processes can access the affected service. Regular security assessments and penetration testing should be conducted to identify similar permission bypass vulnerabilities in other system components, particularly those handling sensitive operations or privileged functions.