CVE-2000-1007 in I-gear
Summary
by MITRE
I-gear 3.5.7 and earlier does not properly process log entries in which a URL is longer than 255 characters, which allows an attacker to cause reporting errors.
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Analysis
by VulDB Data Team • 05/28/2018
The vulnerability identified as CVE-2000-1007 affects I-gear versions 3.5.7 and earlier, representing a classic buffer overflow condition within the application's logging mechanism. This issue stems from inadequate input validation and processing of URL strings that exceed 255 characters in length, creating a potential avenue for denial of service and operational disruption. The flaw specifically manifests when the system attempts to log web requests containing excessively long URLs, causing the logging subsystem to fail in proper handling of these extended entries.
From a technical perspective, this vulnerability operates as a buffer overflow condition where the application's internal logging buffer cannot accommodate URLs exceeding the predetermined 255-character threshold. The system fails to properly truncate or handle extended URL strings during the logging process, leading to memory corruption and subsequent reporting errors. This behavior aligns with CWE-121, which categorizes buffer overflow conditions as critical security weaknesses that can result in system instability and potential exploitation. The vulnerability demonstrates poor input validation practices where the application assumes all URLs will conform to expected length parameters without implementing proper bounds checking mechanisms.
The operational impact of this vulnerability extends beyond simple logging failures, potentially causing cascading effects throughout the application's reporting and monitoring capabilities. When extended URLs trigger the overflow condition, the system may experience partial or complete logging failures, resulting in gaps in audit trails and compromised security monitoring. This disruption can mask actual security incidents or malicious activities that would normally be recorded in the logs, creating a false sense of security for system administrators. Attackers could exploit this weakness systematically by submitting URLs with excessive character counts, causing repeated logging failures that may eventually lead to application crashes or service unavailability.
From an adversarial perspective, this vulnerability maps to ATT&CK technique T1070.002 which involves clearing event logs to hinder detection and analysis. While not directly enabling malicious log manipulation, the reporting errors caused by this vulnerability can obscure legitimate security events and create opportunities for attackers to operate undetected. The vulnerability also relates to T1482 which involves domain trust relationships, as compromised logging systems can affect the integrity of security monitoring and incident response procedures. Organizations relying on I-gear for web traffic analysis face significant risk when this vulnerability remains unpatched, as it undermines the reliability of their security infrastructure and creates potential blind spots in their monitoring capabilities.
Mitigation strategies for CVE-2000-1007 should prioritize immediate patching of affected I-gear installations to version 3.5.8 or later, which contains the necessary fixes for proper URL length handling. Organizations should implement additional input validation measures at the network level to filter excessively long URLs before they reach the vulnerable application. System administrators should configure logging subsystems with appropriate buffer size limits and implement monitoring for unusual logging behavior that might indicate buffer overflow conditions. Regular security assessments should include verification of input handling mechanisms across all application components, particularly those involving user-supplied data processing. The vulnerability serves as a reminder of the critical importance of proper bounds checking and input validation in preventing buffer overflow conditions that can lead to system instability and security compromise.