CVE-2018-1258 in Communications Network Integrity
Summary
by MITRE
Spring Framework version 5.0.5 when used in combination with any versions of Spring Security contains an authorization bypass when using method security. An unauthorized malicious user can gain unauthorized access to methods that should be restricted.
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Analysis
by VulDB Data Team • 08/12/2024
The vulnerability identified as CVE-2018-1258 represents a critical authorization bypass flaw within the Spring Framework ecosystem, specifically affecting version 5.0.5 when integrated with any Spring Security versions. This issue stems from a fundamental weakness in how method-level security is enforced within the framework's security architecture, creating a pathway for malicious actors to circumvent intended access controls. The vulnerability manifests when applications rely on Spring Security's method security features to protect sensitive operations, allowing unauthorized users to execute methods that should be restricted based on role-based or permission-based access controls.
The technical root cause of this vulnerability lies in improper handling of method security metadata during the authentication and authorization process. When Spring Security processes method-level security annotations such as PreAuthorize, PostAuthorize, or @Secured, the framework fails to properly validate the security context in certain scenarios involving method interception and proxy creation. This flaw particularly affects applications that utilize Spring's method security capabilities alongside its web security components, creating a condition where the security checks are bypassed or improperly evaluated. The vulnerability is categorized under CWE-284: Improper Access Control, which specifically addresses insufficient access control mechanisms that allow unauthorized users to access protected resources.
From an operational perspective, the impact of CVE-2018-1258 extends beyond simple unauthorized access to encompass potential data breaches, privilege escalation, and system compromise. An attacker exploiting this vulnerability could gain access to sensitive operations such as user management functions, financial transactions, administrative controls, or any method protected by Spring Security's authorization mechanisms. The attack surface is particularly broad since Spring Framework is widely adopted across enterprise applications, making this vulnerability a significant threat to organizations running applications that rely on method-level security for access control. The vulnerability aligns with ATT&CK technique T1078.004: Valid Accounts, as it allows attackers to leverage legitimate access to execute unauthorized operations within the application's security boundaries.
The exploitation of this vulnerability typically occurs when an attacker can submit requests that trigger method calls protected by Spring Security annotations, but the authorization checks fail to properly validate the request context. This can happen in scenarios involving API endpoints, web services, or any application component that relies on method-level security for protection. Organizations using Spring Framework 5.0.5 with Spring Security are particularly at risk, as the vulnerability affects the core security infrastructure rather than being limited to specific application configurations or deployment scenarios. The flaw demonstrates a critical gap in the security model where the framework's authorization mechanisms fail to maintain their integrity under certain execution paths, potentially allowing attackers to bypass security controls entirely.
Mitigation strategies for CVE-2018-1258 primarily focus on immediate version upgrades to Spring Framework 5.0.6 or later, which contain the necessary patches to address the authorization bypass vulnerability. Organizations should also conduct comprehensive security assessments to identify all applications that may be affected by this vulnerability, particularly those utilizing method-level security annotations. Additionally, implementing additional monitoring and logging around protected method calls can help detect potential exploitation attempts. The remediation process should include thorough testing to ensure that the upgrade does not introduce compatibility issues with existing application functionality. Security teams should also review their application's security configuration to ensure that method-level security is properly implemented and that no other similar vulnerabilities exist within their Spring-based applications. This vulnerability serves as a reminder of the critical importance of maintaining up-to-date security frameworks and the potential consequences of failing to address security flaws in widely-used open source components.