CVE-2018-1798 in WebSphere Application Server
Summary
by MITRE
IBM WebSphere Application Server 7.0, 8.0, 8.5, and 9.0 is vulnerable to cross-site scripting. This vulnerability allows users to embed arbitrary JavaScript code in the Web UI thus altering the intended functionality potentially leading to credentials disclosure within a trusted session. IBM X-Force ID: 149428.
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Analysis
by VulDB Data Team • 06/05/2023
IBM WebSphere Application Server versions 7.0, 8.0, 8.5, and 9.0 contain a cross-site scripting vulnerability that represents a critical security weakness in the web interface implementation. This vulnerability falls under the Common Weakness Enumeration category CWE-79, which specifically addresses cross-site scripting flaws where applications fail to properly validate or escape user input before rendering it in web pages. The flaw exists in the server's user interface handling mechanism, allowing malicious actors to inject JavaScript code through input fields or parameters that are subsequently executed in the context of other users' browsers. The vulnerability enables attackers to manipulate the intended functionality of the web application by executing arbitrary code within the victim's browser session.
The operational impact of this vulnerability extends beyond simple script execution, as it can lead to session hijacking and credential theft within trusted browser sessions. When users interact with the affected WebSphere console or web applications, malicious JavaScript injected through the XSS vector can capture authentication tokens, cookies, or other sensitive session data. This makes the vulnerability particularly dangerous in enterprise environments where administrators and users rely on the WebSphere console for critical management functions. The attack surface is broad since the vulnerability affects multiple major versions of the application server, increasing the potential for exploitation across various organizational deployments.
Security professionals should recognize this vulnerability as a prime candidate for exploitation within the MITRE ATT&CK framework under the T1059.007 technique for Command and Scripting Interpreter, specifically JavaScript execution. The vulnerability also aligns with T1531 for Account Access Removal and T1078 for Valid Accounts, as successful exploitation could lead to unauthorized access to administrative functions. Organizations should implement comprehensive input validation and output encoding mechanisms to prevent user-supplied data from being executed as code. The recommended mitigations include applying the vendor-provided security patches, implementing proper content security policies, and conducting regular security assessments of web applications. Additionally, organizations should consider implementing web application firewalls and monitoring for suspicious JavaScript patterns in web traffic to detect potential exploitation attempts.
The vulnerability demonstrates the critical importance of secure input handling in enterprise web applications and highlights the need for robust security controls in application server environments. Given the widespread deployment of WebSphere Application Server across enterprise networks, the potential for cascading security impacts makes this vulnerability particularly concerning for security teams responsible for protecting organizational infrastructure. Organizations must prioritize immediate remediation efforts and implement comprehensive security monitoring to prevent exploitation of this cross-site scripting vulnerability.