CVE-2004-2553 in ignitionServer
Summary
by MITRE
The Ignition Project ignitionServer 0.1.2 through 0.1.2-R2 allows remote authenticated users with local IRC operator privileges to obtain global IRC operator privileges by using the unofficial umode command with the +ORD argument.
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Analysis
by VulDB Data Team • 06/05/2019
The vulnerability identified as CVE-2004-2553 affects the Ignition Project ignitionServer version 0.1.2 through 0.1.2-R2, representing a significant privilege escalation flaw within IRC server implementations. This issue demonstrates how improperly validated user commands can lead to unauthorized access to critical system functions. The vulnerability specifically targets the authentication and authorization mechanisms of IRC servers, where legitimate users with local IRC operator privileges can exploit a design flaw to elevate their access level to global operator status. Such a vulnerability represents a fundamental breakdown in the security model of the IRC infrastructure, potentially allowing malicious actors to gain control over entire IRC networks or server operations.
The technical flaw stems from the improper handling of the unofficial umode command within the ignitionServer implementation. When authenticated users with local IRC operator privileges execute the umode command with the +ORD argument, the system fails to properly validate the privilege escalation request. This command injection vulnerability allows users to manipulate their operator status through a non-standard but functional interface. The issue manifests as a lack of proper access control validation, where the system does not adequately verify whether the requesting user possesses sufficient privileges to execute the specific mode change. This weakness directly relates to CWE-264, which covers permissions, privileges, and access controls, specifically addressing insufficient access control mechanisms that allow unauthorized privilege escalation.
The operational impact of this vulnerability extends beyond simple privilege escalation, potentially enabling attackers to manipulate IRC network configurations, ban users, control server operations, and access sensitive network information. Global IRC operator privileges provide extensive control over network operations, including the ability to modify server settings, manage user access, and potentially intercept communications. This vulnerability undermines the fundamental security assumptions of IRC network administration, where local operator privileges should not translate to global control. The impact is particularly severe because it allows authenticated users to bypass the normal operator hierarchy and access higher-level administrative functions, creating potential for network disruption, data compromise, and unauthorized access to network resources.
Mitigation strategies for this vulnerability require immediate implementation of access control validation within the IRC server software. System administrators should upgrade to patched versions of ignitionServer that properly validate operator privilege requests and implement proper access control checks for all umode commands. The fix should enforce strict validation of user privileges before allowing any mode changes that could affect global operator status. Additionally, implementing proper logging of all operator privilege changes enables administrators to detect unauthorized attempts at privilege escalation. This vulnerability highlights the importance of following secure coding practices and proper input validation as outlined in the ATT&CK framework under privilege escalation techniques, specifically addressing the use of legitimate system tools for unauthorized access. Organizations should also consider implementing network segmentation and monitoring for unusual operator privilege activities to detect potential exploitation attempts. The vulnerability serves as a reminder that even seemingly benign IRC commands can represent security risks when not properly validated against the security model of the system.