CVE-2018-3103 in Outside In Technology
Summary
by MITRE
Vulnerability in the Oracle Outside In Technology component of Oracle Fusion Middleware (subcomponent: Outside In Filters). The supported version that is affected is 8.5.3. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Outside In Technology. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Outside In Technology accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Outside In Technology. Note: Outside In Technology is a suite of software development kits (SDKs). The protocol and CVSS score depend on the software that uses the Outside In Technology code. The CVSS score assumes that the software passes data received over a network directly to Outside In Technology code, but if data is not received over a network the CVSS score may be lower. CVSS 3.0 Base Score 7.1 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:L).
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Analysis
by VulDB Data Team • 04/10/2023
The vulnerability identified as CVE-2018-3103 resides within Oracle Outside In Technology, a critical component of Oracle Fusion Middleware that functions as a suite of software development kits. This specific flaw manifests in the Outside In Filters subcomponent, which processes various file formats and data types within the middleware environment. The affected version 8.5.3 represents a widely deployed configuration that exposes organizations to significant security risks. The vulnerability's classification as easily exploitable indicates that attackers can leverage network-based HTTP access without requiring authentication credentials, making it particularly dangerous for systems that expose this technology to external networks.
This vulnerability operates through a sophisticated exploitation mechanism that requires minimal attacker privileges while leveraging the inherent trust placed in network-based data processing. The technical flaw stems from insufficient input validation within the Outside In Filters functionality, which allows maliciously crafted data to be processed without proper sanitization. The vulnerability's impact extends beyond simple data compromise, as successful exploitation can lead to complete access to all accessible data within the Oracle Outside In Technology environment. Additionally, the attack vector enables partial denial of service conditions that can disrupt normal operations and availability of critical business processes. The CVSS score of 7.1 reflects the high severity potential, with confidentiality impact rated as high and availability impact as low, though the actual severity can vary significantly based on implementation details and network exposure.
The operational implications of this vulnerability are substantial for organizations relying on Oracle Fusion Middleware environments. The requirement for human interaction from users other than the attacker suggests that the exploitation may occur through social engineering or targeted phishing campaigns where users inadvertently trigger the vulnerability while processing malicious files. This attack model represents a particularly insidious threat because it combines technical exploitation with human factors, making detection and prevention more challenging. Organizations using this technology in production environments face risks of data exfiltration, system compromise, and operational disruption that can cascade through integrated business applications. The vulnerability's impact is particularly concerning for environments where the technology processes untrusted data from external sources, such as email attachments, file uploads, or web content.
Mitigation strategies for CVE-2018-3103 should prioritize immediate patching of affected systems to address the root cause of the vulnerability. Organizations must implement network segmentation to limit exposure of vulnerable systems and establish robust input validation controls that prevent malicious data from reaching the Outside In Technology components. The implementation of web application firewalls and content filtering solutions can provide additional protective layers against exploitation attempts. Security monitoring should focus on detecting unusual data processing patterns and network traffic that may indicate exploitation attempts. According to CWE standards, this vulnerability relates to CWE-20, which addresses improper input validation, and aligns with ATT&CK techniques involving command and control communications and credential access. Organizations should also conduct comprehensive vulnerability assessments to identify all systems utilizing the affected technology and ensure that proper access controls are implemented to limit the potential impact of successful exploitation attempts.