CVE-2004-0480 in Lotus Domino
Summary
by MITRE
Argument injection vulnerability in IBM Lotus Notes 6.0.3 and 6.5 allows remote attackers to execute arbitrary code via a notes: URI that uses a UNC network share pathname to provide an alternate notes.ini configuration file to notes.exe.
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Analysis
by VulDB Data Team • 07/12/2025
The vulnerability described in CVE-2004-0480 represents a critical argument injection flaw within IBM Lotus Notes versions 6.0.3 and 6.5 that enables remote code execution through maliciously crafted notes: URIs. This vulnerability operates at the application layer and specifically targets the way Lotus Notes processes URI arguments when launching the notes.exe executable. The flaw arises from insufficient input validation and sanitization of URI parameters, particularly when handling UNC network share pathnames that reference alternate notes.ini configuration files. Attackers can exploit this weakness by crafting specially formatted notes: URIs that contain malicious arguments which get passed directly to the notes.exe process without proper sanitization, creating a vector for arbitrary code execution on vulnerable systems.
The technical implementation of this vulnerability leverages the inherent trust model within Lotus Notes applications where the notes.exe executable accepts command-line arguments from URI handlers without adequate security checks. When a user clicks on a malicious notes: URI, the application parses the URI components and passes them as arguments to the notes.exe process, which then interprets these arguments as configuration parameters. The specific exploitation technique involves using UNC network share pathnames within the URI to reference alternate notes.ini files that contain malicious configurations or command execution directives. This creates a scenario where the application's configuration file loading mechanism becomes a conduit for code injection, as the system trusts the URI parameters without validating their contents against malicious payloads. The vulnerability falls under CWE-74, which specifically addresses "Improper Neutralization of Special Elements in Output Used by a Downstream Component" and is related to CWE-94, "Improper Control of Generation of Code" in the context of command injection.
The operational impact of this vulnerability extends beyond simple remote code execution to encompass complete system compromise and potential lateral movement within network environments. An attacker who successfully exploits this vulnerability gains the ability to execute arbitrary code with the privileges of the user running Lotus Notes, potentially leading to full system compromise if the application runs with elevated privileges. The remote nature of the attack means that exploitation can occur without physical access to the target system, making it particularly dangerous in enterprise environments where Lotus Notes is widely deployed. Organizations using these vulnerable versions face significant risk as the attack can be delivered through various vectors including email attachments, web pages, or instant messaging applications that support notes: URI handling. The vulnerability also creates opportunities for privilege escalation attacks and can serve as a foothold for more sophisticated attacks within the network infrastructure.
Mitigation strategies for CVE-2004-0480 should focus on immediate patching of vulnerable Lotus Notes installations to versions that properly validate and sanitize URI arguments before passing them to the notes.exe process. Organizations should implement network-level controls to block or filter notes: URI handlers and disable automatic URI processing in email clients and web browsers. The implementation of application whitelisting policies can prevent execution of unauthorized code paths while network segmentation can limit the potential impact of successful exploitation. Additionally, security awareness training should be conducted to educate users about the risks of clicking on untrusted links that may contain malicious notes: URIs. From a defensive perspective, monitoring network traffic for suspicious UNC path patterns and unusual notes.exe process executions can provide early detection of exploitation attempts. The vulnerability also highlights the importance of following secure coding practices and input validation principles, particularly when handling external inputs that get passed to system commands or configuration files, aligning with ATT&CK technique T1059.007 for command and scripting interpreter and T1203 for Exploitation for Client Execution. Organizations should also consider implementing endpoint detection and response solutions that can identify and block suspicious argument injection patterns during process execution.