CVE-2018-1777 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: 148800.
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Analysis
by VulDB Data Team • 05/25/2023
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 flaw in the web interface component. This vulnerability falls under CWE-79 which specifically addresses cross-site scripting attacks, where malicious scripts can be injected into web applications. The flaw enables attackers to embed arbitrary JavaScript code within the web user interface, fundamentally compromising the application's integrity and user trust. The vulnerability exists due to insufficient input validation and output encoding mechanisms within the server's web presentation layer, allowing malicious actors to inject malicious payloads through user-controllable input fields or parameters.
The operational impact of this vulnerability extends beyond simple script injection, as it creates a persistent threat vector that can be exploited to manipulate user sessions and potentially steal sensitive credentials. When users interact with the vulnerable web interface, they may unknowingly execute malicious JavaScript code that can capture session tokens, login credentials, or other sensitive information transmitted within trusted sessions. This represents a significant risk to enterprise security infrastructure where WebSphere serves as a critical application platform. The vulnerability specifically targets the web-based administrative console and user interfaces, making it particularly dangerous for system administrators who frequently access these interfaces.
Attackers can leverage this vulnerability through various means including crafted web requests, malicious links, or by exploiting other initial access vectors that lead to interaction with the vulnerable web interface. The attack typically involves injecting JavaScript payloads that can steal cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users. This aligns with ATT&CK technique T1531 which focuses on establishing persistence through malicious web content, and T1566 which covers social engineering techniques involving malicious web content. The vulnerability can be exploited in both authenticated and unauthenticated scenarios depending on the specific implementation details and access controls in place.
Organizations should implement comprehensive mitigation strategies including immediate patching of affected IBM WebSphere versions, deployment of web application firewalls to detect and block malicious script injection attempts, and enhanced input validation controls. Security teams must conduct thorough vulnerability assessments to identify all instances of the affected software versions within their infrastructure. The recommended approach includes enabling proper output encoding, implementing content security policies, and establishing robust monitoring for suspicious web traffic patterns. Additionally, regular security training for administrators and developers should emphasize secure coding practices to prevent similar vulnerabilities in custom applications built on the WebSphere platform, as this vulnerability demonstrates the critical importance of proper input sanitization and output encoding mechanisms in preventing cross-site scripting attacks.