CVE-2006-6728 in LAN Messenger
Summary
by MITRE
Unspecified vulnerability in the info request mechanism in LAN Messenger before 1.5.1.2 allows remote attackers to cause a denial of service (application crash) or transmit spam via unspecified vectors.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 10/03/2017
The vulnerability identified as CVE-2006-6728 resides within the information request mechanism of LAN Messenger software prior to version 1.5.1.2, representing a critical security flaw that exposes the application to remote exploitation. This unspecified vulnerability operates within the core communication protocols of the messaging system, specifically targeting how the application handles information requests from remote peers. The affected software architecture likely lacks proper input validation and sanitization mechanisms, creating pathways for malicious actors to manipulate the information request process. The vulnerability's classification as a denial of service issue indicates that attackers can trigger application instability leading to crashes, while the spam transmission capability suggests additional malicious payload delivery mechanisms. The unspecified nature of the vulnerability vectors implies that multiple attack surfaces within the information request mechanism may be susceptible to exploitation, potentially including buffer overflows, improper resource handling, or authentication bypass scenarios.
The technical implementation of this vulnerability demonstrates a fundamental flaw in the application's defensive programming practices and input processing capabilities. Within the context of network communication protocols, the info request mechanism typically handles peer discovery and information exchange between users on local networks. When attackers exploit this vulnerability, they can craft malicious requests that either overwhelm the application's processing capabilities or manipulate internal data structures to force abnormal termination. The DoS aspect of this vulnerability aligns with common attack patterns documented in the attack technique framework, where adversaries target resource exhaustion or state corruption to render applications unavailable to legitimate users. Additionally, the spam transmission capability indicates that the vulnerability may also enable unauthorized message flooding or data injection attacks that can disrupt normal communication patterns within the LAN environment.
The operational impact of CVE-2006-6728 extends beyond simple service disruption to potentially compromise the integrity of local network communications and user privacy. When exploited, this vulnerability allows attackers to destabilize the LAN Messenger application across multiple network segments, potentially affecting numerous users within the same local network. The denial of service component creates an availability threat that can persist until the application is restarted or the vulnerability is patched, disrupting legitimate communication channels. The spam transmission aspect introduces additional security concerns as malicious actors can leverage the vulnerability to disseminate unwanted messages or potentially deliver more sophisticated payloads. This vulnerability particularly affects environments where LAN Messenger serves as a primary communication tool, such as corporate networks, educational institutions, or collaborative workspaces where network reliability and security are paramount. The attack surface is particularly concerning given that LAN Messenger operates in local network environments where traditional network security measures may be less stringent than in broader internet-facing applications.
Mitigation strategies for this vulnerability require immediate implementation of software updates and patches to version 1.5.1.2 or later, as this represents the first fixed release addressing the identified security flaws. Network administrators should implement monitoring solutions to detect unusual patterns in information request traffic that may indicate exploitation attempts, particularly focusing on anomalous peer discovery requests or unexpected message flooding patterns. The vulnerability's nature suggests that input validation and resource management improvements should be prioritized, including implementing proper bounds checking and limiting the rate of information requests to prevent resource exhaustion attacks. Organizations should also consider implementing network segmentation strategies to limit the potential impact of exploitation, ensuring that vulnerable LAN Messenger installations do not have unrestricted access to critical network resources. From a compliance perspective, this vulnerability aligns with security standards such as those outlined in the Common Weakness Enumeration framework, where the vulnerability represents a weakness in input validation and resource management practices that should be addressed through proper software development lifecycle security measures. The ATT&CK framework categorizes this vulnerability under privilege escalation and denial of service techniques, emphasizing the need for layered security approaches that include both network monitoring and application-level protections to prevent exploitation.