CVE-2020-14639 in WebLogic Server
Summary
by MITRE
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Sample apps). Supported versions that are affected are 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0 and 14.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle WebLogic Server accessible data. CVSS 3.1 Base Score 7.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N).
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Analysis
by VulDB Data Team • 11/01/2020
The vulnerability identified as CVE-2020-14639 represents a critical security flaw within Oracle WebLogic Server's sample applications component, affecting multiple version lines including 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, and 14.1.1.0.0. This weakness stems from insufficient authentication mechanisms within the sample applications framework, creating an exploitable entry point that requires no prior authorization from attackers. The vulnerability's classification as easily exploitable indicates that malicious actors can leverage standard network-based HTTP protocols to gain unauthorized access to the targeted server infrastructure. Security analysts have assigned a CVSS base score of 7.5, reflecting high confidentiality impact and low attack complexity, with the vector AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N demonstrating the vulnerability's accessibility and potential data exposure risks. The flaw specifically resides in the sample applications functionality that should not require authentication for basic operations, creating a pathway for unauthorized access to critical server resources.
The technical exploitation of this vulnerability occurs through unauthenticated HTTP network requests that can be crafted to access protected server resources within the WebLogic environment. Attackers can leverage this weakness to gain access to sensitive data stored within the server or potentially execute commands that could lead to complete system compromise. The sample applications component typically serves as a demonstration framework for developers and administrators, but in this case, it fails to properly enforce authentication controls, allowing any network entity to access functionality that should be restricted. This represents a fundamental breakdown in the principle of least privilege, where the system fails to adequately verify user identities before granting access to protected resources. The vulnerability's impact extends beyond simple data access, potentially enabling attackers to extract confidential information, manipulate server configurations, or establish persistent access points within the network infrastructure.
Organizations running affected WebLogic Server versions face significant operational risks from this vulnerability, particularly those with exposed server instances or inadequate network segmentation controls. The unauthenticated nature of the attack means that even systems behind firewalls or network boundaries could be compromised if the sample applications are accessible over HTTP. This vulnerability can result in unauthorized access to critical business data, user credentials, or system configurations that could lead to cascading security incidents throughout the enterprise. The potential for complete data compromise makes this vulnerability particularly dangerous for organizations handling sensitive information, financial data, or personal user records. Security teams must consider the broader implications of this weakness within their overall security posture, as it could serve as an initial access vector for more sophisticated attacks or provide attackers with a foothold for lateral movement within the network infrastructure.
Mitigation strategies for CVE-2020-14639 should prioritize immediate patching of affected Oracle WebLogic Server installations with the vendor-provided security updates. Organizations should also implement network-level controls to restrict access to the sample applications component, particularly by blocking HTTP access to these endpoints or ensuring they are only accessible within secure internal networks. Network segmentation and firewall rules should be reviewed to ensure that sample applications are not exposed to external networks without proper authentication mechanisms. Additionally, security monitoring should be enhanced to detect unusual access patterns or attempts to access the vulnerable sample applications. The mitigation approach aligns with CWE-284, which addresses improper access control vulnerabilities, and follows ATT&CK technique T1190 for exploiting vulnerabilities in web applications. Organizations should also conduct comprehensive vulnerability assessments to identify any additional instances of similar weaknesses within their WebLogic Server deployments and implement continuous monitoring to detect potential exploitation attempts. The remediation process must include thorough testing of patches to ensure that security updates do not introduce compatibility issues with existing applications or business processes.