CVE-2012-0518 in Fusion Middleware
Summary
by MITRE
Unspecified vulnerability in the Oracle Application Server Single Sign-On component in Oracle Fusion Middleware 10.1.4.3.0 allows remote attackers to affect integrity via unknown vectors related to Redirects, a different vulnerability than CVE-2012-3175.
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Analysis
by VulDB Data Team • 04/22/2026
The vulnerability identified as CVE-2012-0518 resides within the Oracle Application Server Single Sign-On component of Oracle Fusion Middleware version 10.1.4.3.0, representing a critical security flaw that exposes organizations to potential integrity breaches. This unspecified vulnerability specifically relates to redirect mechanisms within the SSO component, creating a pathway for remote attackers to manipulate the authentication and authorization processes. The affected Oracle Fusion Middleware environment operates as a comprehensive platform for enterprise application deployment, making this vulnerability particularly concerning for organizations relying on integrated enterprise security solutions. The vulnerability's classification as unspecified indicates that the exact technical mechanism remains undisclosed, which is common in early vulnerability disclosures where full technical details are still being investigated and analyzed by security researchers and vendors.
The technical flaw manifests through redirect-related vectors that allow attackers to manipulate the Single Sign-On process, potentially enabling unauthorized access to protected resources or modification of authentication flows. This type of vulnerability typically exploits weaknesses in how the system handles redirect requests during the authentication process, where attackers can craft malicious redirect URLs that bypass normal security controls. The redirect mechanism in SSO systems is designed to facilitate seamless navigation between different applications while maintaining authentication state, but this vulnerability suggests that the validation and handling of these redirect parameters is insufficient. The attack surface is particularly dangerous because it affects the core authentication infrastructure, potentially allowing adversaries to redirect users to malicious sites or manipulate session tokens during the authentication flow. This vulnerability aligns with CWE-601, which addresses URL redirect vulnerabilities and the potential for open redirect flaws that can be exploited to perform phishing attacks or gain unauthorized access to protected resources.
The operational impact of CVE-2012-0518 extends beyond simple data integrity concerns, potentially enabling attackers to compromise entire enterprise authentication systems and access sensitive business applications. Organizations utilizing Oracle Fusion Middleware 10.1.4.3.0 may experience unauthorized access to protected resources, session hijacking, or manipulation of user authentication states. The vulnerability's remote nature means that attackers can exploit it without requiring physical access to the network, making it particularly dangerous for enterprises with distributed user bases. This type of vulnerability directly impacts the principle of least privilege and can lead to privilege escalation scenarios where attackers gain access to higher-privileged accounts or sensitive data. The integrity aspect of the vulnerability suggests that attackers can modify authentication parameters or redirect users to malicious sites, potentially leading to credential theft or unauthorized system access. Security operations teams face significant challenges in detecting and mitigating this vulnerability due to its unspecified nature and the complex interdependencies within Oracle Fusion Middleware environments. The potential for cascading effects means that compromise of the SSO component can lead to widespread access to multiple applications within the enterprise ecosystem.
Mitigation strategies for CVE-2012-0518 should focus on immediate patching of Oracle Fusion Middleware installations to the latest security releases, as Oracle would have addressed this vulnerability in subsequent updates. Organizations should implement network segmentation and access controls to limit exposure of the affected components, particularly restricting external access to SSO services. Security monitoring should include detection of suspicious redirect patterns and anomalous authentication behavior, leveraging intrusion detection systems to identify potential exploitation attempts. Network administrators should consider implementing strict redirect validation policies that prevent redirection to untrusted domains or URLs, which can help reduce the attack surface. The vulnerability's characteristics align with ATT&CK technique T1566, which covers phishing and social engineering attacks that leverage redirect mechanisms, making it essential for organizations to implement comprehensive email security and user awareness training. Additionally, organizations should conduct thorough vulnerability assessments of their Oracle Fusion Middleware deployments to identify any other potentially affected components, as the vulnerability may indicate broader issues within the middleware environment. Regular security audits and penetration testing should be performed to ensure that all authentication mechanisms are properly secured and that no similar redirect vulnerabilities exist within the enterprise infrastructure.