CVE-2006-0119 in Lotus Domino
Summary
by MITRE
Multiple unspecified vulnerabilities in IBM Lotus Notes and Domino Server before 6.5.5 have unknown impact and attack vectors, due to "potential security issues" as identified by SPR numbers (1) GPKS6C9J67 in Agents, (2) JGAN6B6TZ3 and (3) KSPR699NBP in the Router, (4) GPKS5YQGPT in Security, or (5) HSAO6BNL6Y in the Web Server. NOTE: vector 3 is related to an issue in NROUTER in IBM Lotus Notes and Domino Server before 6.5.4 FP1, 6.5.5, and 7.0, which allows remote attackers to cause a denial of service (CPU consumption) via a crafted vCal meeting request sent via SMTP (aka SPR# KSPR699NBP).
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Analysis
by VulDB Data Team • 06/23/2025
The vulnerability described in CVE-2006-0119 represents a collection of unspecified security flaws within IBM Lotus Notes and Domino Server versions prior to 6.5.5, with particular emphasis on issues identified through specific SPR (Service Problem Report) numbers that highlight different attack surfaces within the software ecosystem. These vulnerabilities span multiple components of the Lotus Notes and Domino infrastructure, including agents, router functionality, security mechanisms, and web server capabilities, indicating a systemic weakness in the platform's overall security architecture.
The technical nature of these vulnerabilities manifests through various vectors, with one particularly significant issue affecting the NROUTER component in versions before 6.5.4 FP1, 6.5.5, and 7.0. This specific vulnerability enables remote attackers to execute a denial of service attack by crafting malicious vCal meeting requests transmitted via SMTP protocol, as documented by SPR number KSPR699NBP. The attack exploits the router's handling of malformed calendar data, potentially leading to excessive cpu consumption that can render the system unresponsive. This vulnerability directly correlates with CWE-400, which categorizes denial of service conditions as a critical weakness in software systems. The exploitation of this vulnerability falls under ATT&CK technique T1499.004, specifically targeting network denial of service through resource exhaustion attacks.
The impact of these unspecified vulnerabilities remains difficult to quantify due to the lack of detailed technical descriptions, but the presence of multiple attack vectors suggests a potentially wide-ranging threat surface that could affect various operational aspects of email and collaboration systems. The fact that these issues exist in the router component indicates potential for widespread disruption, as the router serves as a critical communication pathway for email traffic. Organizations utilizing affected versions of IBM Lotus Notes and Domino Server face significant risk of service disruption, particularly in environments where email availability is critical. The vulnerabilities in agents, security components, and web server functionality could potentially allow for privilege escalation, information disclosure, or additional attack vectors beyond simple denial of service.
Mitigation strategies should focus on immediate deployment of available patches and updates from IBM, specifically targeting the versions mentioned in the vulnerability description. Organizations should implement network monitoring to detect unusual cpu consumption patterns that might indicate exploitation attempts. The vulnerability's classification as a denial of service attack suggests implementing rate limiting and input validation measures for email processing, particularly for calendar-related data. Security teams should also consider network segmentation to limit the potential impact of exploitation and establish incident response procedures specifically addressing denial of service conditions in collaboration platforms. The remediation process should include thorough testing of patches to ensure that updates do not introduce regressions in functionality, particularly given the interconnected nature of the affected components. Organizations should also conduct vulnerability assessments to identify any other potentially affected systems within their network infrastructure that might be running older versions of the Lotus Notes and Domino platform.