CVE-2019-2889 in WebLogic Server
Summary
by MITRE
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Sample apps). The supported version that is affected is 12.2.1.3.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebLogic Server. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle WebLogic Server, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle WebLogic Server accessible data as well as unauthorized read access to a subset of Oracle WebLogic Server accessible data. CVSS 3.0 Base Score 6.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).
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Analysis
by VulDB Data Team • 01/09/2024
The vulnerability described in CVE-2019-2889 represents a critical security flaw within Oracle WebLogic Server version 12.2.1.3.0, specifically affecting the Sample apps component of Oracle Fusion Middleware. This vulnerability falls under the category of remotely exploitable issues that can be leveraged by unauthenticated attackers without requiring any prior authentication or privileged access. The attack vector utilizes HTTP network access, making it particularly dangerous as it can be exploited from external networks without the need for insider knowledge or credentials. The CVSS score of 6.1 indicates a moderate to high severity threat level, with specific impacts to both confidentiality and integrity aspects of the affected system.
The technical nature of this vulnerability stems from insufficient input validation and access control mechanisms within the sample applications bundled with WebLogic Server. Attackers can exploit this weakness to gain unauthorized access to data within the server environment, enabling them to perform unauthorized update, insert, or delete operations on certain data elements. Additionally, the vulnerability permits unauthorized read access to a subset of data that the server has access to, potentially exposing sensitive information stored within the system. The requirement for human interaction from a person other than the attacker suggests that the exploitation may involve social engineering elements or targeted user actions that could be manipulated by the attacker to facilitate the breach.
The operational impact of this vulnerability extends beyond the immediate compromise of the WebLogic Server itself, as successful attacks can significantly affect additional products within the Oracle Fusion Middleware ecosystem. This cascading effect means that organizations may experience broader security implications that extend beyond their initial WebLogic Server deployment. The vulnerability's classification under CWE categories related to insufficient input validation and weak access control mechanisms aligns with common attack patterns documented in security frameworks. From an ATT&CK perspective, this vulnerability maps to techniques involving initial access through network services and privilege escalation through data manipulation, making it particularly concerning for enterprise environments where WebLogic Server typically serves as a core application platform.
Organizations should implement immediate mitigations including applying the relevant Oracle Critical Patch Updates and ensuring that the sample applications are properly secured or removed from production environments. Network segmentation and firewall rules should be implemented to restrict access to WebLogic Server ports and services, particularly those related to HTTP access. Regular security assessments and monitoring should be conducted to detect any unauthorized access attempts or suspicious activities within the server environment. The vulnerability's characteristics also suggest that organizations should review their overall application security practices and implement more robust input validation and access control mechanisms across their entire middleware infrastructure to prevent similar issues from occurring in other components.