CVE-2014-8902 in WebSphere Portal
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the Blog Portlet in IBM WebSphere Portal 6.1.0 through 6.1.0.6 CF27, 6.1.5 through 6.1.5.3 CF27, 7.0.0 through 7.0.0.2 CF29, 8.0.0 through 8.0.0.1 CF14, and 8.5.0 before CF04 allows remote attackers to inject arbitrary web script or HTML via a crafted URL.
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Analysis
by VulDB Data Team • 04/09/2022
The CVE-2014-8902 vulnerability represents a critical cross-site scripting flaw within IBM WebSphere Portal's Blog Portlet component, affecting multiple versions across the 6.1.x, 7.0.x, 8.0.x, and 8.5.0 release lines. This vulnerability resides in the portal's handling of user-supplied input within URL parameters, specifically within the blog portlet functionality that processes external requests. The flaw enables malicious actors to inject arbitrary web scripts or HTML content through specially crafted URLs, exploiting the application's insufficient input validation and output encoding mechanisms. The vulnerability's impact extends across IBM WebSphere Portal deployments where the Blog Portlet is enabled, making it a significant concern for organizations relying on this enterprise portal platform for content management and collaboration services.
The technical exploitation of this vulnerability occurs when the Blog Portlet fails to properly sanitize or encode user-provided URL parameters before rendering them in the web page context. Attackers can construct malicious URLs containing script tags or HTML elements that bypass the application's security controls, allowing their code to execute within the context of other users' browsers. This occurs due to the absence of proper input validation mechanisms that should filter or escape special characters in URL parameters before they are processed and displayed. The vulnerability can be classified under CWE-79 as "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", specifically manifesting as reflected XSS where the malicious script is reflected back to users through the web application's response. The flaw demonstrates poor application security practices in input sanitization and output encoding, which are fundamental requirements for preventing XSS attacks according to OWASP Top Ten security guidelines.
The operational impact of CVE-2014-8902 is substantial for organizations utilizing IBM WebSphere Portal, as successful exploitation can lead to complete session hijacking, data theft, privilege escalation, and unauthorized access to sensitive information. Attackers can leverage this vulnerability to steal user session cookies, redirect victims to malicious sites, or inject malicious content that can compromise the integrity of the portal environment. The vulnerability affects both authenticated and unauthenticated users, making it particularly dangerous as it can be exploited without requiring prior authorization. Organizations may experience reputational damage, regulatory compliance violations, and potential data breaches when this vulnerability is exploited in the wild. The attack vector is particularly concerning because it requires minimal user interaction, as simply visiting a malicious URL containing the crafted script can trigger the exploit, aligning with ATT&CK technique T1566.001 for spearphishing via web links. The vulnerability can also be used as a stepping stone for more sophisticated attacks, potentially allowing attackers to escalate privileges or gain unauthorized access to backend systems.
Mitigation strategies for CVE-2014-8902 should focus on immediate patching of affected IBM WebSphere Portal versions, with organizations upgrading to supported releases that contain the necessary security fixes. IBM released specific cumulative fixes for each affected version, including CF27, CF29, and CF04 releases, which address the input validation gaps in the Blog Portlet component. Organizations should implement proper input validation and output encoding controls at the application level, ensuring that all user-supplied data is properly sanitized before being processed or rendered. Network-level protections such as web application firewalls can provide additional defense-in-depth measures, though they should not replace proper application-level fixes. Security monitoring should be enhanced to detect suspicious URL patterns and potential exploitation attempts. Organizations should also conduct comprehensive security assessments of their portal environments to identify other potential XSS vulnerabilities in related components, as this vulnerability may indicate broader security gaps in the application's input handling mechanisms. The fix implementation should follow industry best practices for secure coding, including the application of proper HTML encoding, input validation, and output sanitization techniques to prevent similar vulnerabilities from occurring in the future.