CVE-2018-3249 in WebLogic Server
Summary
by MITRE
Vulnerability in the Oracle WebLogic Server component of Oracle Fusion Middleware (subcomponent: WLS - Web Services). The supported version that is affected is 10.3.6.0. 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 access to critical data or complete access to all Oracle WebLogic Server accessible data. CVSS 3.0 Base Score 6.5 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).
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Analysis
by VulDB Data Team • 05/26/2023
The vulnerability identified as CVE-2018-3249 resides within Oracle WebLogic Server's Web Services component, specifically within the WLS subcomponent of Oracle Fusion Middleware. This flaw represents a significant security weakness that affects version 10.3.6.0 of the software, making it a critical concern for organizations relying on this middleware platform. The vulnerability's classification as easily exploitable indicates that attackers with minimal privileges and network access can potentially leverage this weakness to gain unauthorized access to sensitive systems. The CVSS 3.0 scoring system assigns a base score of 6.5, which falls into the medium severity category, though the potential impact on confidentiality is rated as high, indicating that successful exploitation could lead to unauthorized access to critical data or complete access to all data accessible through the affected Oracle WebLogic Server. This vulnerability operates under the assumption that an attacker can establish network connectivity to the target system, making it particularly concerning for environments where such access might be possible through exposed services or network boundaries.
The technical implementation of this vulnerability stems from insufficient input validation within the Web Services functionality of Oracle WebLogic Server. Attackers can exploit this weakness by sending specially crafted HTTP requests that manipulate the server's processing of web service messages. The flaw likely involves improper handling of serialized data or insufficient sanitization of input parameters that are processed within the Web Services framework. This type of vulnerability typically falls under CWE-20, which represents "Improper Input Validation," a fundamental weakness that allows attackers to inject malicious code or manipulate system behavior through malformed inputs. The low privilege requirement means that even unauthenticated users who can access the HTTP interface can potentially exploit this vulnerability, making it particularly dangerous in environments where the WebLogic Server is exposed to untrusted networks or where access controls are insufficiently enforced.
The operational impact of CVE-2018-3249 extends far beyond simple data access violations, potentially enabling attackers to achieve complete system compromise. Successful exploitation can result in unauthorized access to critical data stored within or accessible through the Oracle WebLogic Server environment, including sensitive business information, user credentials, or proprietary data. The vulnerability's ability to provide complete access to all Oracle WebLogic Server accessible data means that attackers could potentially extract, modify, or delete critical information, leading to significant business disruption and potential regulatory compliance violations. Organizations running affected versions of Oracle WebLogic Server face substantial risk of data breaches, service interruptions, and potential regulatory penalties. The impact is particularly severe because Oracle WebLogic Server often serves as a critical component in enterprise IT infrastructure, supporting numerous applications and services that may contain highly sensitive information, making this vulnerability a prime target for attackers seeking to gain access to enterprise-wide data repositories.
Mitigation strategies for CVE-2018-3249 should include immediate implementation of Oracle's security patches and updates released specifically for this vulnerability, as these patches address the underlying input validation flaws in the Web Services component. Organizations should also implement network segmentation to limit access to Oracle WebLogic Server instances, ensuring that only authorized systems can reach the affected services. The principle of least privilege should be strictly enforced, limiting network access to the WebLogic Server to only those systems that require it for legitimate business operations. Additional defensive measures include implementing web application firewalls to monitor and filter HTTP traffic, enabling comprehensive logging and monitoring of Web Services access, and conducting regular security assessments to identify potential attack vectors. Organizations should also consider implementing intrusion detection systems to monitor for suspicious activities that might indicate exploitation attempts. The ATT&CK framework categorizes this vulnerability under the 'Exploitation for Privilege Escalation' and 'Command and Control' techniques, emphasizing the need for comprehensive defensive measures that address both the initial exploitation phase and potential lateral movement within compromised networks. Given the vulnerability's classification and potential impact, organizations should prioritize remediation efforts and consider implementing additional security controls such as network access controls, application firewalls, and regular vulnerability assessments to prevent exploitation of similar weaknesses in their infrastructure.