CVE-2005-4726 in MUTE
Summary
by MITRE
MUTE 0.4 uses improper flood protection algorithms, which allows remote attackers to obtain sensitive information (privacy leak and search result data) by controlling a drop chain neighbor that is near the end of a message chain.
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Analysis
by VulDB Data Team • 07/16/2018
The vulnerability described in CVE-2005-4726 affects MUTE 0.4, a distributed hash table implementation used in peer-to-peer networks for routing and data storage. This flaw resides in the flood protection mechanisms that are designed to prevent network flooding attacks and excessive message propagation. The improper flood protection algorithms create a security weakness that can be exploited by malicious actors who control specific network nodes. The vulnerability specifically targets the drop chain neighbor mechanism, where an attacker can manipulate nodes positioned near the end of a message chain to gain unauthorized access to sensitive information. This represents a significant privacy risk as it allows attackers to extract search result data and other confidential information that should remain protected within the network.
The technical implementation of this vulnerability stems from flawed logic in how MUTE 0.4 handles message propagation and neighbor node management within its distributed network topology. When a message travels through the network, it follows a chain of nodes that act as intermediaries before reaching its destination. The system's flood protection algorithms are supposed to prevent malicious nodes from overwhelming the network with excessive messages, but in this case, the protection mechanism itself contains a design flaw. An attacker who controls a drop chain neighbor node can manipulate the message flow to bypass normal security controls and access data that would normally be protected by the network's privacy mechanisms. This flaw operates at the network protocol level, specifically targeting the routing and message handling components of the distributed system.
The operational impact of this vulnerability extends beyond simple information disclosure, as it fundamentally compromises the privacy and security guarantees that distributed hash table systems are designed to provide. Attackers can exploit this weakness to perform surveillance activities, monitor network traffic patterns, and extract valuable search result data from other users' queries. The vulnerability is particularly dangerous because it leverages the legitimate network infrastructure to conduct unauthorized data access rather than requiring direct system compromise. This type of attack aligns with the attack pattern described in the ATT&CK framework under network infiltration techniques, where adversaries use existing network connections to access sensitive data. The privacy leak aspect of this vulnerability violates the fundamental security principle of information hiding that distributed systems should maintain.
The root cause of this vulnerability can be classified as a weakness in access control mechanisms, specifically related to improper message flow control within distributed systems. This flaw demonstrates poor implementation of network security controls that should prevent unauthorized access to sensitive information through legitimate network paths. Organizations using MUTE 0.4 or similar distributed hash table implementations should implement immediate mitigations including enhanced network monitoring, stricter neighbor node validation, and improved flood protection algorithms. The vulnerability also highlights the importance of proper security testing for distributed systems, particularly in identifying weaknesses in message propagation and node management protocols. This type of vulnerability would be categorized under CWE-284 for improper access control and CWE-310 for cryptographic weaknesses in network protocols, emphasizing the need for comprehensive security assessments of distributed system components.