CVE-2018-2809 in PeopleSoft Enterprise PeopleTools
Summary
by MITRE
Vulnerability in the PeopleSoft Enterprise PeopleTools component of Oracle PeopleSoft Products (subcomponent: Fluid Homepage & Navigation). Supported versions that are affected are 8.54, 8.55 and 8.56. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise PeopleSoft Enterprise PeopleTools. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of PeopleSoft Enterprise PeopleTools accessible data. CVSS 3.0 Base Score 4.3 (Integrity impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N).
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Analysis
by VulDB Data Team • 03/02/2023
The CVE-2018-2809 vulnerability resides within Oracle PeopleSoft Enterprise PeopleTools, specifically affecting the Fluid Homepage & Navigation subcomponent across versions 8.54, 8.55, and 8.56. This represents a significant security weakness that exploits the inherent trust model of the PeopleTools framework, where the system fails to properly validate user authentication status during certain navigation and homepage operations. The vulnerability manifests as a privilege escalation issue that allows attackers to manipulate the system's data integrity through unauthorized modification of content accessible via the fluid interface. The flaw specifically impacts the authorization mechanisms that should normally prevent unauthenticated access to administrative functions within the PeopleSoft environment. From a cybersecurity perspective, this vulnerability demonstrates the critical importance of proper input validation and authentication checks in enterprise application frameworks that handle sensitive business data.
The technical implementation of this vulnerability stems from insufficient validation of user sessions and authentication state during Fluid interface operations within PeopleTools. Attackers can exploit this weakness by crafting specific HTTP requests that bypass the normal authentication flow, allowing them to perform unauthorized data modifications through the navigation and homepage components. The vulnerability requires human interaction from an authenticated user, meaning the attacker must first obtain legitimate credentials or exploit a separate initial access vector, then leverage the flaw to escalate privileges or manipulate data through the PeopleSoft interface. This design flaw creates a scenario where the system's trust model is compromised, allowing unauthorized modification of data that should normally be protected by proper authentication controls. The vulnerability specifically affects the integrity aspect of the CIA triad, enabling attackers to perform unauthorized update, insert, or delete operations against PeopleTools accessible data.
The operational impact of CVE-2018-2809 extends beyond simple data modification, as it represents a potential pathway for more sophisticated attacks within enterprise environments. Organizations using affected PeopleSoft versions face risks of data corruption, unauthorized system modifications, and potential disclosure of sensitive business information through the compromised navigation components. The vulnerability's CVSS 3.0 score of 4.3 indicates a moderate severity level that reflects the potential for unauthorized data manipulation without requiring elevated privileges or complex attack vectors. Attackers can leverage this vulnerability to alter configuration settings, modify user permissions, or corrupt data within the PeopleSoft application, potentially disrupting business operations and compromising regulatory compliance. The requirement for human interaction, while limiting automatic exploitation, still creates a realistic threat scenario where social engineering or credential compromise can lead to successful exploitation. This vulnerability aligns with CWE-284, which addresses improper access control, and represents a classic example of how interface-level authentication bypasses can create systemic security weaknesses in enterprise applications.
Organizations should implement immediate mitigations including applying Oracle's security patches and updates, implementing additional network segmentation controls, and monitoring for suspicious navigation and homepage access patterns. The recommended approach involves strengthening authentication mechanisms, implementing proper session management, and ensuring that all PeopleSoft installations are updated to versions that address this specific vulnerability. Security teams should also conduct comprehensive audits of PeopleTools configurations to identify any additional authentication bypass opportunities within the Fluid interface components. Network-level controls such as web application firewalls and access control lists can provide additional defense-in-depth measures while patches are being deployed. The vulnerability underscores the importance of continuous security monitoring and vulnerability management processes, particularly for enterprise applications that handle critical business data. Organizations should also consider implementing user behavior analytics to detect anomalous navigation patterns that might indicate exploitation attempts. This vulnerability serves as a reminder of the critical need for robust authentication and authorization controls in enterprise applications, particularly those with web-based interfaces that may be exposed to external threats. The attack vector classification aligns with ATT&CK technique T1078 for valid accounts and T1566 for credential harvesting, emphasizing the need for comprehensive security controls across multiple attack phases.