CVE-2004-2581 in iChain
Summary
by MITRE
Novell iChain 2.3 allows attackers to cause a denial of service via a URL with a "specific string."
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Analysis
by VulDB Data Team • 06/30/2018
The vulnerability identified as CVE-2004-2581 affects Novell iChain 2.3, a web application firewall and access control solution that was widely deployed in enterprise environments during the early 2000s. This particular weakness resides in the application's handling of HTTP requests and specifically targets the URL parsing mechanism within the iChain software. The vulnerability manifests when an attacker crafts a malicious URL containing a specific string pattern that triggers an abnormal behavior in the application's request processing pipeline. This flaw represents a classic denial of service vulnerability that can be exploited without requiring authentication or specialized privileges, making it particularly dangerous in production environments where such systems serve as critical access control points.
The technical implementation of this vulnerability stems from insufficient input validation and error handling within the iChain 2.3 software architecture. When the application encounters a URL containing the specific string pattern, the internal parsing routine fails to properly handle the malformed input, leading to a cascade of errors that ultimately results in the application becoming unresponsive or crashing entirely. The flaw likely occurs in the URL normalization or routing logic where the system attempts to process the malicious string without proper bounds checking or exception handling mechanisms. This type of vulnerability aligns with CWE-129, which describes improper validation of length of input buffers, and CWE-20, which covers input validation issues that can lead to denial of service conditions. The vulnerability's impact is amplified by the fact that iChain systems often serve as the primary gateway for enterprise network access, making a successful attack capable of disrupting legitimate business operations across multiple departments or locations.
The operational impact of CVE-2004-2581 extends beyond simple service disruption, as it can be leveraged by attackers to create persistent availability issues that may go unnoticed for extended periods. Organizations relying on iChain 2.3 for access control and web application security face significant risk when this vulnerability is exploited, as the denial of service can effectively block legitimate user access to applications and resources protected by the system. The attack vector is particularly concerning because it requires minimal technical expertise to execute, making it accessible to a broad range of threat actors including script kiddies and opportunistic attackers. From an attack chain perspective, this vulnerability could be classified under ATT&CK technique T1499.004, which covers network denial of service attacks, and potentially T1071.004, which involves application layer protocol manipulation. The vulnerability also demonstrates poor software security practices related to input sanitization and error handling, which are fundamental requirements outlined in the OWASP Top Ten and ISO/IEC 27001 security standards.
Mitigation strategies for this vulnerability should begin with immediate deployment of Novell's official patches and updates, which would contain the necessary fixes to properly validate URL inputs and implement robust error handling routines. Organizations should also consider implementing network-level protections such as intrusion detection systems that can detect and block traffic patterns associated with the specific string pattern that triggers the vulnerability. Additionally, network segmentation and redundant access control systems should be implemented to prevent a single point of failure in the access control infrastructure. Security teams should conduct thorough vulnerability assessments to identify any other systems running outdated versions of iChain software that may be susceptible to similar issues. The remediation process should include monitoring for potential exploitation attempts and establishing incident response procedures specifically tailored to address denial of service attacks targeting access control systems. Organizations should also consider migrating to more modern access control solutions that incorporate better security practices and have more robust input validation mechanisms to prevent similar vulnerabilities from occurring in the future.