CVE-2024-20927 in WebLogic Server
Summary
by MITRE • 02/17/2024
Vulnerability in the Oracle WebLogic Server product of Oracle Fusion Middleware (component: Core). Supported versions that are affected are 12.2.1.4.0 and 14.1.1.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle WebLogic Server. While the vulnerability is in Oracle WebLogic Server, attacks may significantly impact additional products (scope change). Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle WebLogic Server accessible data. CVSS 3.1 Base Score 8.6 (Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N).
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Analysis
by VulDB Data Team • 11/29/2024
The vulnerability identified as CVE-2024-20927 represents a critical security flaw within Oracle WebLogic Server, specifically within the Core component of Oracle Fusion Middleware. This vulnerability affects two major version lines: 12.2.1.4.0 and 14.1.1.0.0, which are widely deployed in enterprise environments across various industries. The flaw resides in the server's handling of HTTP requests, creating an attack surface that can be exploited by unauthenticated remote adversaries. The CVSS base score of 8.6 reflects the severity of the issue, with particular emphasis on integrity impacts that could lead to unauthorized modifications of critical system data. The vulnerability's classification as easily exploitable indicates that attackers require minimal technical expertise to leverage this weakness effectively.
The technical implementation of this vulnerability stems from insufficient input validation and authentication mechanisms within the WebLogic Server's HTTP processing layer. Attackers can exploit this weakness by sending specifically crafted HTTP requests to the affected server instances without requiring any prior authentication credentials. The scope change aspect of this vulnerability is particularly concerning as it indicates that successful exploitation could potentially impact additional Oracle products beyond the immediate WebLogic Server environment, creating cascading security implications throughout enterprise infrastructures. This characteristic aligns with ATT&CK technique T1210, which involves exploiting weaknesses in remote services, and demonstrates how a single vulnerability can serve as a gateway to broader system compromise.
The operational impact of CVE-2024-20927 extends far beyond simple data integrity violations, as it provides attackers with unauthorized access to modify or delete critical system data within the WebLogic Server environment. This capability directly maps to CWE-284, which addresses improper access control vulnerabilities, and represents a significant threat to enterprise security postures. Organizations utilizing affected WebLogic Server versions face potential data loss, system corruption, and unauthorized modification of business-critical applications and configurations. The CVSS vector analysis reveals that while the attack requires network access (AV:N), the low attack complexity (AC:L) and lack of required privileges (PR:N) make this vulnerability particularly dangerous in environments where WebLogic servers are exposed to untrusted networks. The scope change element (S:C) indicates that successful exploitation could affect multiple products, potentially extending the attack surface beyond the initial target.
Mitigation strategies for CVE-2024-20927 should prioritize immediate patch deployment from Oracle, as the vulnerability's severity demands urgent attention. Organizations should implement network segmentation to restrict direct access to WebLogic Server instances from untrusted networks, effectively reducing the attack surface. The principle of least privilege should be enforced by ensuring that WebLogic Server instances operate with minimal required permissions and that network access controls are strictly enforced. Additionally, organizations should implement comprehensive monitoring solutions to detect anomalous HTTP traffic patterns that might indicate exploitation attempts. Security teams should also conduct thorough network audits to identify all affected WebLogic Server instances and ensure that all systems are updated according to Oracle's security advisories. The vulnerability's characteristics align with ATT&CK technique T1071.004, which involves application layer protocols, making network-based detection and prevention measures particularly critical for organizations seeking to defend against exploitation attempts.