CVE-2005-2484 in Denora IRC Stats
Summary
by MITRE
Buffer overflow in the rdb_query function for Denora IRC Stats 1.0 might allow attackers to execute arbitrary code.
Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.
Analysis
by VulDB Data Team • 07/28/2017
The vulnerability identified as CVE-2005-2484 represents a critical buffer overflow flaw within the rdb_query function of Denora IRC Stats version 1.0. This software component serves as an IRC statistics collection and reporting tool that processes data from IRC networks, making it a potential target for exploitation by malicious actors. The buffer overflow occurs when the rdb_query function fails to properly validate input length before copying data into a fixed-size buffer, creating an exploitable condition that can be leveraged to execute arbitrary code on the affected system.
The technical implementation of this vulnerability stems from improper input validation mechanisms within the rdb_query function, which is responsible for processing database queries related to IRC network statistics. When an attacker crafts malicious input data that exceeds the allocated buffer size, the excess data overflows into adjacent memory regions, potentially overwriting critical program execution data such as return addresses or function pointers. This memory corruption can be manipulated to redirect program execution flow to attacker-controlled code, effectively allowing remote code execution with the privileges of the affected service.
From an operational perspective, this vulnerability presents significant risk to IRC network administrators who may be running Denora IRC Stats 1.0 on their servers. The attack surface is particularly concerning as it allows remote exploitation without requiring authentication, meaning that any user connected to the IRC network could potentially trigger the vulnerability. The impact extends beyond simple code execution to include potential system compromise, data exfiltration, and service disruption that could affect entire IRC networks. The vulnerability aligns with CWE-121, which describes heap-based buffer overflow conditions, and represents a classic example of improper input validation that violates fundamental security principles.
The exploitation of this vulnerability can be analyzed through the lens of the MITRE ATT&CK framework, particularly under the execution and privilege escalation tactics. Attackers could leverage this buffer overflow to gain unauthorized access to IRC server systems, potentially using it as a foothold for further network infiltration. The vulnerability's classification as a remote code execution flaw places it within the high-risk category of attack vectors that can be exploited from outside the network perimeter. Organizations using Denora IRC Stats 1.0 should immediately implement mitigations including input validation patches, network segmentation, and monitoring for suspicious IRC traffic patterns. The recommended remediation strategy involves upgrading to a patched version of Denora, implementing proper input sanitization, and deploying intrusion detection systems to monitor for exploitation attempts. Additionally, system administrators should consider implementing application firewalls and restricting IRC network access to authorized users only to minimize potential attack surfaces and reduce the likelihood of successful exploitation attempts.