CVE-2013-0525 in Lotus iNotes
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in IBM iNotes 8.5.x allow local users to inject arbitrary web script or HTML via a shared mail file, aka SPR DKEN8PDNTX.
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Analysis
by VulDB Data Team • 05/03/2017
The vulnerability identified as CVE-2013-0525 represents a critical cross-site scripting flaw discovered in IBM iNotes 8.5.x versions, specifically affecting the web-based email and collaboration platform. This vulnerability resides within the shared mail file functionality, creating a pathway for local attackers to execute malicious web scripts or HTML code within the context of authenticated user sessions. The issue manifests when the application fails to properly sanitize user-supplied input during the processing of shared mail file operations, allowing attackers to inject malicious payloads that persist and execute when other users access these shared resources.
The technical exploitation of this vulnerability occurs through the manipulation of shared mail file parameters, where attackers can craft specially formatted input that bypasses the application's input validation mechanisms. When legitimate users access these compromised shared mail files, the injected scripts execute in their browser context, potentially leading to session hijacking, credential theft, or unauthorized actions performed on behalf of the victim. This vulnerability specifically impacts the server-side processing of shared mail file operations, where insufficient output encoding and input sanitization routines fail to neutralize malicious content before it is rendered to end users. The flaw enables attackers to leverage the trust relationship between the application and its users, executing code within the security context of the target user's browser session.
From an operational perspective, this vulnerability creates significant risk for organizations relying on IBM iNotes for email and collaboration services, as it allows attackers to compromise user sessions and potentially gain access to sensitive corporate communications. The local nature of the attack means that an attacker must already have some level of access to the system or be able to trick users into interacting with malicious shared mail files. However, the impact extends beyond simple script execution, as successful exploitation can lead to complete session compromise, data exfiltration, and potential lateral movement within the network. Organizations may experience unauthorized access to confidential emails, calendar entries, and other collaborative data stored within the iNotes environment, while the persistent nature of shared mail files means that the attack can affect multiple users over time.
The vulnerability aligns with CWE-79, which describes Cross-Site Scripting flaws in web applications, and represents a classic example of insufficient output escaping or encoding in web applications. From an attack framework perspective, this vulnerability maps to several ATT&CK techniques including T1566 for social engineering and T1059 for command and scripting interpreter, as attackers can use the XSS payload to establish persistence and execute additional malicious commands. The remediation approach requires immediate application of IBM's security patches and updates, along with implementing proper input validation and output encoding mechanisms. Organizations should also consider implementing web application firewalls to detect and block suspicious script injection attempts, while conducting regular security assessments to identify similar vulnerabilities in other applications within their environment. Additionally, user education regarding the risks of interacting with untrusted shared mail files and implementing least privilege access controls can help reduce the overall attack surface and potential impact of such vulnerabilities.