CVE-2007-6410 in Instant Messenger
Summary
by MITRE
Gadu-Gadu does not properly perform protocol handling, which allows remote attackers to conduct cross-site request forgery (CSRF) attacks and add arbitrary user accounts or cause a denial of service as administrators via an unspecified "crafted link," possibly related to the gg protocol.
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Analysis
by VulDB Data Team • 11/06/2017
The Gadu-Gadu messaging protocol vulnerability identified as CVE-2007-6410 represents a critical security flaw in the communication framework that enables unauthorized remote attackers to exploit cross-site request forgery mechanisms. This vulnerability specifically affects the protocol handling implementation within the Gadu-Gadu client and server components, creating a pathway for malicious actors to manipulate the authentication and authorization processes. The flaw stems from inadequate validation of incoming protocol requests and insufficient session management controls that fail to properly verify the authenticity of user interactions. The vulnerability operates at the application layer and demonstrates poor input sanitization practices that allow attackers to craft malicious links that can be executed in the context of authenticated sessions.
The technical exploitation of this vulnerability occurs through the manipulation of protocol handling mechanisms that govern user account creation and administrative operations within the Gadu-Gadu ecosystem. Attackers can construct specially crafted links that, when clicked by an authenticated administrator, trigger unintended actions such as creating new user accounts with elevated privileges or executing denial of service conditions against the messaging infrastructure. The vulnerability is classified under CWE-352, which specifically addresses Cross-Site Request Forgery weaknesses in web applications and protocol implementations. This type of vulnerability allows attackers to perform actions on behalf of authenticated users without their knowledge or consent, fundamentally compromising the integrity of the authentication system.
The operational impact of this vulnerability extends beyond simple privilege escalation to encompass potential system compromise and service disruption. When administrators inadvertently click on maliciously crafted links, they unknowingly execute commands that can result in unauthorized account creation, modification of existing user permissions, or complete service degradation. The vulnerability particularly affects the administrative functions within the Gadu-Gadu protocol, where legitimate administrative actions can be spoofed through carefully constructed protocol requests. This creates a scenario where attackers can gain persistent access to the system and potentially establish backdoors or maintain long-term control over the messaging infrastructure. The vulnerability also poses significant risks to user privacy and data integrity within the network.
Mitigation strategies for this vulnerability must address both the immediate protocol handling flaws and implement comprehensive security controls to prevent unauthorized operations. Organizations should implement strict input validation mechanisms that verify the authenticity of all protocol requests and enforce proper session management protocols that prevent unauthorized command execution. The implementation of anti-CSRF tokens within the protocol framework would significantly reduce the attack surface by ensuring that all administrative operations require explicit verification. Additionally, network segmentation and monitoring systems should be deployed to detect anomalous protocol behavior and unauthorized account creation attempts. Security updates should include proper authentication verification mechanisms and the implementation of the principle of least privilege for all administrative functions. The vulnerability also highlights the importance of regular security assessments and adherence to secure coding practices as outlined in the OWASP Top Ten and NIST cybersecurity frameworks to prevent similar protocol-level flaws in future implementations.