CVE-2015-1920 in WebSphere Application Server
Summary
by MITRE
IBM WebSphere Application Server (WAS) 6.1 through 6.1.0.47, 7.0 before 7.0.0.39, 8.0 before 8.0.0.11, and 8.5 before 8.5.5.6 allows remote attackers to execute arbitrary code by sending crafted instructions in a management-port session.
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Analysis
by VulDB Data Team • 11/29/2024
IBM WebSphere Application Server represents a critical middleware platform widely deployed in enterprise environments for hosting business applications and services. The vulnerability identified as CVE-2015-1920 affects multiple versions of this application server, specifically targeting the management port functionality that enables administrative operations. This vulnerability resides within the server's handling of management session communications, creating a remote code execution vector that could be exploited by attackers without authentication. The flaw manifests when the application server processes specially crafted instructions sent through the management port, which then gets interpreted and executed with the privileges of the application server process. This represents a severe security weakness that directly violates the principle of least privilege and could allow attackers to gain complete control over the affected server instances.
The technical implementation of this vulnerability stems from inadequate input validation and sanitization within the management port session handling code. Attackers can craft malicious payloads that exploit improper parsing of management commands, leading to arbitrary code execution on the target system. The vulnerability is particularly dangerous because it operates over the network without requiring authentication, making it accessible to any remote attacker who can reach the management port. This type of flaw aligns with CWE-121, which describes heap-based buffer overflow conditions, and potentially CWE-78, which covers improper neutralization of special elements used in OS commands. The attack vector specifically involves network-based communication through TCP ports typically used for administrative management functions, making it consistent with ATT&CK technique T1059 for command and scripting interpreter.
The operational impact of this vulnerability extends far beyond simple code execution, as it provides attackers with complete system compromise capabilities. An attacker who successfully exploits this vulnerability can deploy malicious code, access sensitive data, modify application configurations, and potentially use the compromised server as a pivot point for attacking other systems within the network. The affected versions span a significant range of WebSphere Application Server releases, indicating this was a widespread issue affecting organizations that had not yet applied necessary security patches. The management port typically operates on well-known ports such as 8880 or 9060, making it particularly vulnerable to exploitation as these ports are often exposed to external networks. Organizations using WebSphere Application Server in production environments faced a critical security risk that could result in complete system takeover and data breaches.
Mitigation strategies for this vulnerability require immediate patch application from IBM, as the vendor released security fixes specifically addressing this issue in the affected version ranges. Organizations should also implement network segmentation to restrict access to management ports, ensuring these ports are only accessible from trusted administrative networks. Additional protective measures include disabling management ports when not actively needed, implementing network access controls, and monitoring for suspicious activity on management port communications. Security teams should conduct comprehensive vulnerability assessments to identify all affected WebSphere instances and ensure proper patch management procedures are in place. The remediation process must also include verifying that management port access is properly restricted and that administrative functions are not exposed to untrusted networks. Organizations should consider implementing intrusion detection systems to monitor for exploitation attempts and establish incident response procedures specifically for managing such critical vulnerabilities.