CVE-2020-2549 in WebLogic Server
Summary
by MITRE
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: WLS Core Components). The supported version that is affected is 10.3.6.0.0. Easily exploitable vulnerability allows high privileged attacker with network access via HTTP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in takeover of Oracle WebLogic Server. CVSS 3.0 Base Score 7.2 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).
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Analysis
by VulDB Data Team • 03/22/2024
The vulnerability identified as CVE-2020-2549 represents a critical security flaw within Oracle WebLogic Server's WLS Core Components, specifically affecting version 10.3.6.0.0. This vulnerability resides within Oracle Fusion Middleware's web application server infrastructure, which serves as a foundational component for enterprise applications requiring robust middleware capabilities. The affected system operates as a Java-based application server that processes HTTP requests and manages enterprise resource planning and business application integration. The flaw stems from insufficient input validation mechanisms within the server's core processing components, creating an exploitable condition that can be leveraged by malicious actors with elevated privileges. The vulnerability's classification as easily exploitable indicates that the attack surface is well-defined and accessible through standard network protocols, making it particularly dangerous in production environments where such servers typically operate with broad network accessibility.
The technical exploitation of this vulnerability occurs through HTTP network access, requiring only a high-privileged attacker with network connectivity to the target server. The attack vector specifically targets the WLS Core Components, which handle fundamental server operations including request processing, session management, and component communication within the WebLogic environment. The flaw allows for complete compromise of the affected Oracle WebLogic Server instance, enabling attackers to gain full control over the server's operations and potentially escalate their privileges further within the enterprise network. This represents a significant elevation in attack capabilities, as the vulnerability does not merely allow for data exfiltration or service disruption but provides complete system takeover potential. The CVSS 3.0 scoring of 7.2 reflects the severity of impacts across confidentiality, integrity, and availability dimensions, indicating that successful exploitation could result in complete system compromise with substantial business impact.
The operational impact of this vulnerability extends far beyond immediate system compromise, affecting enterprise security postures and business continuity operations. Organizations running affected WebLogic Server versions face potential exposure to data breaches, service interruptions, and unauthorized access to critical business applications. The vulnerability's presence in a core middleware component means that compromise of a single server can potentially affect multiple applications and services that depend on the WebLogic infrastructure. This creates cascading effects throughout enterprise networks where WebLogic servers often serve as central integration points for business applications, making the attack impact multiplier. The high privilege requirement for exploitation suggests that attackers would need to have already gained some level of access to the network, but this initial access point can quickly escalate into complete system compromise.
Mitigation strategies for CVE-2020-2549 should prioritize immediate patch deployment through Oracle's official security updates, as the vulnerability has been addressed through targeted security patches. Organizations should implement network segmentation to limit access to WebLogic server instances, particularly restricting HTTP access to only trusted administrative networks. The principle of least privilege should be enforced by ensuring that only authorized personnel have high-privileged access to the server, with additional authentication mechanisms such as multi-factor authentication implemented. Network monitoring and intrusion detection systems should be configured to detect anomalous HTTP traffic patterns that might indicate exploitation attempts. Security teams should conduct comprehensive vulnerability assessments to identify all instances of affected WebLogic Server versions within their infrastructure and establish incident response procedures specifically addressing server compromise scenarios. This vulnerability aligns with CWE-20, which addresses "Improper Input Validation," and maps to ATT&CK technique T1190, "Exploit Public-Facing Application," highlighting the importance of securing externally accessible server components through proper access controls and network segmentation strategies.