CVE-2007-4609 in eyeOS
Summary
by MITRE
eyeOS uses predictable checksum values in the checknum parameter for access control, which allows remote attackers to register many accounts via doCreateUser actions, add many eyeBoard messages via addMsg actions, and cause a denial of service or conduct certain unauthorized activities, by guessing valid parameter values.
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Analysis
by VulDB Data Team • 03/17/2019
The vulnerability identified as CVE-2007-4609 resides within the eyeOS web-based operating system platform, specifically targeting its access control mechanisms through predictable checksum values. This weakness manifests in the checknum parameter used during various user interaction processes, creating a significant security gap that adversaries can exploit to manipulate the system's authentication and authorization controls. The issue stems from the implementation of a weak cryptographic checksum algorithm or predictable random number generation that fails to provide adequate entropy for security purposes.
The technical flaw in eyeOS operates through the manipulation of the checknum parameter which serves as a validation mechanism for user registration and messaging operations. When attackers can predict or guess valid checksum values, they gain the ability to bypass normal access controls and perform unauthorized actions within the system. This vulnerability specifically impacts the doCreateUser and addMsg actions, allowing malicious actors to register multiple accounts and post numerous eyeBoard messages without proper authentication. The predictable nature of these checksum values essentially removes the security barrier that should prevent unauthorized system access and data manipulation.
The operational impact of this vulnerability extends beyond simple unauthorized access to include potential denial of service conditions and broader unauthorized activities within the eyeOS environment. Attackers can leverage this weakness to flood the system with fake user accounts and messages, creating resource exhaustion conditions that degrade system performance and availability. The ability to register multiple accounts enables attackers to conduct spamming activities, manipulate system data, and potentially establish persistent access points within the platform. This vulnerability undermines the fundamental security model of eyeOS by allowing remote exploitation without requiring legitimate credentials or advanced technical knowledge.
From a cybersecurity perspective, this vulnerability aligns with CWE-330 use of insufficent entropy and represents a classic case of weak random number generation in security-critical components. The attack pattern follows principles outlined in the MITRE ATT&CK framework under the T1110 technique for credential access and T1499 for network denial of service. Organizations utilizing eyeOS or similar platforms face significant risks when this vulnerability remains unpatched, as it provides attackers with a straightforward path to system compromise through predictable parameter manipulation. The vulnerability demonstrates the critical importance of proper cryptographic implementation and the necessity of using cryptographically secure random number generators for security parameters.
Mitigation strategies for CVE-2007-4609 require immediate implementation of strong cryptographic checksum algorithms and proper random number generation for all security-critical parameters within eyeOS. System administrators should ensure that the checknum parameter utilizes cryptographically secure pseudo-random number generators with sufficient entropy to prevent prediction by unauthorized parties. The platform should implement proper session management and rate limiting mechanisms to prevent account enumeration and excessive message posting. Additionally, regular security audits and penetration testing should validate that all checksum and validation parameters meet current cryptographic standards and do not exhibit predictable patterns that could be exploited by attackers.