CVE-2005-1640 in ignitionServer
Summary
by MITRE
mod_channel.bas in The Ignition Project ignitionServer 0.3.0 to 0.3.6, and possibly earlier versions, does not properly verify whether a host has the owner privileges required to delete IRC channel access entries, which allows remote attackers to bypass intended restrictions.
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Analysis
by VulDB Data Team • 06/01/2019
The vulnerability identified as CVE-2005-1640 represents a critical access control flaw within the ignitionServer software developed by The Ignition Project. This issue affects versions 0.3.0 through 0.3.6 of the software, with potential impacts extending to earlier releases as well. The vulnerability specifically resides in the mod_channel.bas module which handles IRC channel access management functionality. The flaw manifests as insufficient privilege verification during the deletion process of IRC channel access entries, creating a significant security weakness in the system's authorization mechanisms.
The technical implementation of this vulnerability stems from inadequate input validation and privilege checking within the channel management subsystem. When a remote attacker attempts to delete IRC channel access entries, the system fails to properly authenticate whether the requesting host possesses the necessary owner privileges required for such operations. This oversight creates a path for unauthorized users to bypass intended access controls and perform administrative actions on IRC channels without proper authorization. The flaw operates at the application level and does not require local system access, making it particularly dangerous as it can be exploited remotely over network connections.
From an operational perspective, this vulnerability severely undermines the security posture of IRC networks utilizing affected ignitionServer versions. Attackers can exploit this weakness to remove legitimate user access entries, potentially gaining unauthorized control over channel management functions. The impact extends beyond simple privilege escalation as it allows for potential channel takeover scenarios where malicious actors can modify access controls, remove legitimate administrators, or disrupt normal channel operations. This vulnerability directly violates the principle of least privilege and compromises the integrity of the channel access control system.
The vulnerability aligns with CWE-284, which addresses improper access control issues in software systems, and represents a classic example of insufficient authorization checks. From an attacker's perspective, this flaw maps to techniques described in the MITRE ATT&CK framework under privilege escalation and defense evasion tactics. The remote exploitation capability means that attackers can leverage this vulnerability from any network location without requiring physical access to the system. Organizations running affected software should immediately implement mitigations including upgrading to patched versions, implementing network segmentation, and monitoring for unauthorized access attempts to channel management functions.
The broader implications of this vulnerability highlight the importance of proper privilege verification in multi-user systems and demonstrate how seemingly minor flaws in access control logic can result in significant security breaches. System administrators should conduct thorough vulnerability assessments of all IRC server implementations and ensure that proper access controls are enforced for all administrative functions. The vulnerability serves as a reminder of the critical need for comprehensive input validation and privilege checking mechanisms in server applications that handle user access management. Additionally, organizations should consider implementing additional monitoring and logging for channel access modifications to detect potential exploitation attempts and maintain audit trails for security incident response activities.