CVE-2020-2550 in WebLogic Server
Summary
by MITRE
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: WLS Core Components). Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0 and 12.2.1.4.0. Easily exploitable vulnerability allows high privileged attacker with logon to the infrastructure where Oracle WebLogic Server executes 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 as well as unauthorized update, insert or delete access to some of Oracle WebLogic Server accessible data. CVSS 3.0 Base Score 5.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N).
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 03/23/2024
The vulnerability identified as CVE-2020-2550 represents a critical security flaw within Oracle WebLogic Server's WLS Core Components, specifically targeting versions 10.3.6.0.0, 12.1.3.0.0, 12.2.1.3.0, and 12.2.1.4.0. This vulnerability falls under the Common Weakness Enumeration category CWE-284, which addresses improper access control mechanisms, and aligns with the MITRE ATT&CK framework's privilege escalation techniques. The flaw exists in the server's core components and manifests as an easily exploitable vulnerability that requires only a high privileged attacker with legitimate logon credentials to the target infrastructure. The CVSS 3.0 scoring system assigns this vulnerability a base score of 5.1, reflecting moderate severity with high confidentiality impact and low integrity impact, while the access vector is local, access complexity is low, and privilege requirements are high, indicating that the attack requires an authenticated user with elevated privileges.
The technical exploitation of this vulnerability enables attackers to compromise the entire Oracle WebLogic Server instance, providing unauthorized access to critical data and complete control over all accessible data within the server environment. This includes the ability to perform unauthorized read operations on sensitive information, as well as unauthorized modification, insertion, and deletion of data within the server's accessible data stores. The attack requires an authenticated user with high privileges who already has access to the infrastructure where the WebLogic Server is executing, making this vulnerability particularly dangerous in environments where insider threats or compromised accounts exist. The vulnerability's impact extends beyond simple data access, as it can potentially allow for complete data compromise and manipulation, undermining the integrity and confidentiality of the entire WebLogic Server deployment.
The operational impact of CVE-2020-2550 creates significant risk for organizations relying on Oracle WebLogic Server for critical business applications and services. Organizations with exposed WebLogic Server instances face potential data breaches, unauthorized data manipulation, and complete compromise of their application infrastructure. The vulnerability's classification as easily exploitable means that sophisticated attack techniques are not required, making it accessible to threat actors with basic privileges within the target environment. This risk is particularly elevated in enterprise environments where WebLogic Server often serves as a central component for business-critical applications, making the potential for widespread impact substantial. The vulnerability's local access requirement suggests that attackers who have already gained access to the server infrastructure through other means can leverage this flaw to escalate their privileges and gain complete control over the WebLogic Server environment.
Organizations should implement immediate mitigations including applying the relevant Oracle Critical Patch Update (CPU) patches to address the vulnerability in affected versions. The recommended approach involves upgrading to supported versions of Oracle WebLogic Server that have been patched against this vulnerability, while also implementing network segmentation and access controls to limit the potential impact of compromised accounts. Additionally, organizations should conduct comprehensive security assessments of their WebLogic Server deployments to identify and remediate any additional vulnerabilities that may exist within the environment. The implementation of privileged access management solutions and regular security monitoring can help detect and prevent exploitation attempts, while maintaining detailed audit logs of access to WebLogic Server components provides crucial forensic data for incident response activities. Organizations should also consider implementing network-based intrusion detection systems that can identify potential exploitation attempts targeting this specific vulnerability.