CVE-2019-2887 in WebLogic Server
Summary
by MITRE
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Web Services). Supported versions that are affected are 10.3.6.0.0, 12.1.3.0.0 and 12.2.1.3.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle WebLogic Server. Successful attacks of this vulnerability can result in unauthorized read access to a subset of Oracle WebLogic Server accessible data. CVSS 3.0 Base Score 4.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).
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Analysis
by VulDB Data Team • 01/09/2024
The vulnerability identified as CVE-2019-2887 resides within Oracle WebLogic Server's Web Services component, representing a significant security weakness in the Fusion Middleware suite that affects multiple version lines including 10.3.6.0.0, 12.1.3.0.0, and 12.2.1.3.0. This flaw operates at the intersection of network-based attacks and insufficient authorization controls, creating a pathway for malicious actors to access sensitive server data. The vulnerability's classification as easily exploitable indicates that attackers with minimal privileges and network connectivity can potentially compromise the system, making it particularly concerning for enterprise environments where WebLogic servers typically host critical business applications and data repositories. The CVSS base score of 4.3 reflects the moderate severity of the confidentiality impact, though the low attack complexity and privileged access requirements suggest this vulnerability could be leveraged in targeted attacks against organizations with insufficient security controls.
The technical nature of this vulnerability stems from inadequate input validation and access control mechanisms within the Web Services component of WebLogic Server. Attackers can exploit this weakness through HTTP network connections, bypassing traditional security measures that might otherwise prevent unauthorized data access. The vulnerability specifically enables unauthorized read access to a subset of data within the WebLogic Server environment, which could include configuration details, application data, or other sensitive information stored within the server's accessible resources. This type of flaw typically falls under CWE-284 (Improper Access Control) or CWE-20 (Improper Input Validation) classifications, representing common security weaknesses that allow attackers to circumvent authorization checks and gain access to protected resources. The attack vector analysis reveals that this vulnerability requires minimal prerequisites, making it particularly attractive to threat actors seeking to expand their access within compromised environments.
The operational impact of CVE-2019-2887 extends beyond simple data theft, as unauthorized access to WebLogic Server data can provide attackers with valuable intelligence for further exploitation attempts. Organizations running affected WebLogic Server versions face potential exposure of sensitive business data, configuration files, and application artifacts that could be used to plan more sophisticated attacks or to gain deeper system access. The subset nature of the accessible data suggests that while not all server information may be compromised, the vulnerability could still provide attackers with enough information to conduct targeted reconnaissance or to identify additional attack vectors within the broader infrastructure. This aligns with ATT&CK technique T1083 (File and Directory Discovery) and T1213 (Data from Information Repositories) where adversaries seek to understand the target environment and identify valuable data assets. The low privilege requirements mean that even users with minimal access rights could potentially exploit this vulnerability, making it particularly dangerous in environments where privilege escalation is not properly controlled.
Organizations should prioritize immediate remediation efforts by applying Oracle's security patches and updates specifically designed to address this vulnerability. The mitigation strategy should include implementing network segmentation to limit access to WebLogic Server instances, deploying intrusion detection systems to monitor for suspicious HTTP traffic patterns, and conducting thorough vulnerability assessments to identify any potential exploitation attempts. Additionally, organizations should review their access control policies and implement principle of least privilege configurations to minimize the impact of potential exploitation. Regular security monitoring and incident response procedures should be enhanced to detect and respond to unauthorized access attempts. The vulnerability's classification as a medium severity issue with low attack complexity underscores the importance of proactive security measures, including network access controls, regular patch management, and comprehensive security awareness training for personnel who might interact with WebLogic Server environments. Organizations should also consider implementing additional monitoring controls and logging mechanisms to detect potential exploitation attempts and maintain audit trails for forensic analysis if incidents occur.