CVE-2023-30926 in SC9863A
Summary
by MITRE • 07/12/2023
In opm service, there is 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 • 07/30/2023
The vulnerability identified as CVE-2023-30926 resides within the opm service component, representing a critical authorization flaw that undermines the security posture of systems relying on this service. This issue manifests as a missing permission check that allows unauthorized access to sensitive information. The vulnerability is classified under CWE-284 which specifically addresses inadequate access control mechanisms, making it a direct descendant of weak privilege management within software systems. The opm service operates with elevated privileges and maintains access to various system resources that should be restricted to authorized users only.
The technical implementation flaw occurs when the service fails to validate user permissions before granting access to information resources. This missing validation step creates an exploitable condition where any local user can retrieve information that should be protected by proper access controls. The vulnerability does not require additional execution privileges or elevated user rights to exploit, making it particularly dangerous as it can be leveraged by any user with local access to the system. This characteristic aligns with ATT&CK technique T1078 which covers legitimate credentials and valid accounts as a means of gaining access to systems. The flaw essentially allows for privilege escalation through information disclosure rather than traditional execution-based attacks.
The operational impact of this vulnerability extends beyond simple information disclosure, as it can expose sensitive system data that may include configuration details, user credentials, system architecture information, or other confidential data that could be leveraged by attackers for further exploitation. Local information disclosure vulnerabilities are particularly concerning because they can provide attackers with insights into system internals that would otherwise remain hidden. The lack of additional execution privileges required for exploitation means that an attacker does not need to escalate their privileges beyond basic local access to gain valuable intelligence. This vulnerability can serve as a stepping stone for more sophisticated attacks, as the disclosed information can be used to plan targeted attacks against other system components or to identify additional vulnerabilities.
Mitigation strategies should focus on implementing proper permission validation within the opm service to ensure that all access requests are properly authenticated and authorized. The fix involves adding comprehensive access control checks that validate user privileges before granting access to sensitive resources. Organizations should implement the principle of least privilege by ensuring that the service operates with minimal required permissions and that access to information is strictly controlled. Regular security audits should be conducted to identify similar permission check gaps in other system components, as this vulnerability represents a common pattern in software development where access controls are either omitted or inadequately implemented. Additionally, system administrators should monitor for unauthorized access attempts to sensitive information and implement logging mechanisms that can detect when permission checks are bypassed or circumvented. The remediation approach should align with security best practices outlined in frameworks such as NIST SP 800-53 which emphasizes the importance of access control and information flow protection.