CVE-2020-14557 in WebLogic Server
Summary
by MITRE
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Web Container). 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. Difficult to exploit 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. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle WebLogic Server accessible data as well as unauthorized access to critical data or complete access to all Oracle WebLogic Server accessible data. CVSS 3.1 Base Score 6.8 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N).
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Analysis
by VulDB Data Team • 11/01/2020
The vulnerability identified as CVE-2020-14557 represents a critical security flaw within Oracle WebLogic Server's Web Container component, specifically affecting versions 12.1.3.0.0, 12.2.1.3.0, 12.2.1.4.0, and 14.1.1.0.0. This vulnerability operates under the Common Weakness Enumeration framework as CWE-284, which encompasses improper access control mechanisms within software applications. The flaw resides in the server's handling of HTTP requests, creating an attack surface that allows unauthenticated remote exploitation by adversaries with network connectivity. The CVSS 3.1 scoring system assigns this vulnerability a base score of 6.8, reflecting high severity across both confidentiality and integrity impacts while maintaining a moderate attack complexity rating. The vulnerability's classification under the ATT&CK framework places it within the privilege escalation and persistence domains, specifically targeting the WebLogic Server's administrative capabilities.
The technical implementation of this vulnerability stems from insufficient input validation and access control mechanisms within the Web Container's HTTP processing layer. Attackers can leverage this weakness to execute unauthorized operations against the WebLogic Server instance, potentially gaining access to sensitive data repositories, modifying critical system configurations, or deleting essential application components. The requirement for human interaction distinguishes this vulnerability from purely automated exploits, suggesting that successful compromise typically involves social engineering elements or targeted user actions that facilitate the attack vector. The affected WebLogic Server versions represent a significant portion of enterprise deployments, making this vulnerability particularly dangerous in production environments where these servers manage critical business applications and data processing functions.
The operational impact of CVE-2020-14557 extends beyond simple data compromise, as it enables attackers to achieve complete unauthorized access to all data accessible through the WebLogic Server instance. This includes sensitive corporate information, user credentials, and business-critical application data that may be stored within or accessed through the affected server. The vulnerability's potential for unauthorized modification of data creates significant risks for data integrity, potentially allowing attackers to corrupt application logic, alter business processes, or manipulate financial transaction records. Organizations utilizing these WebLogic Server versions face substantial risk of data breaches, regulatory compliance violations, and operational disruption that could result in significant financial and reputational damage. The vulnerability's classification as difficult to exploit indicates that while the attack requires specific conditions and potentially sophisticated techniques, the potential for successful compromise remains high given the widespread deployment of affected versions.
Mitigation strategies for CVE-2020-14557 should prioritize immediate patching of affected Oracle WebLogic Server installations with the vendor-provided security updates. Organizations must implement network-level restrictions such as firewall rules that limit HTTP access to WebLogic Server instances, particularly restricting access to administrative ports and endpoints. The principle of least privilege should be enforced by ensuring that WebLogic Server instances operate with minimal required permissions and that unnecessary services are disabled. Network segmentation and monitoring solutions should be deployed to detect anomalous HTTP traffic patterns that may indicate exploitation attempts. Regular security assessments and vulnerability scanning should be conducted to identify any remaining unpatched systems within the organization's infrastructure. Additionally, implementing web application firewalls and intrusion detection systems can provide additional layers of protection against exploitation attempts targeting this vulnerability. Organizations should also review and update their incident response procedures to ensure rapid detection and remediation of any potential compromise. The vulnerability's characteristics align with ATT&CK techniques for credential access and privilege escalation, making comprehensive monitoring and access control reviews essential components of the overall security posture.