CVE-2005-4594 in TUGZip
Summary
by MITRE
Stack-based buffer overflow in TUGZip 3.4.0.0 allows remote attackers to execute arbitrary code via a long filename in an ARJ archive.
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Analysis
by VulDB Data Team • 06/26/2025
The vulnerability identified as CVE-2005-4594 represents a critical stack-based buffer overflow flaw discovered in TUGZip version 3.4.0.0, a widely used file archiving utility for windows platforms. This vulnerability specifically manifests when the software processes ARJ archive files containing excessively long filenames, creating a dangerous condition that can be exploited by remote attackers to gain unauthorized control over affected systems. The flaw stems from inadequate input validation mechanisms within the archive processing code, particularly in how the application handles filename lengths during decompression operations.
The technical nature of this vulnerability places it firmly within the category of stack-based buffer overflows as classified by the Common Weakness Enumeration (CWE-121) and is closely related to CWE-787 which describes out-of-bounds writes. When an attacker crafts an ARJ archive containing a filename that exceeds the allocated buffer space on the stack, the excess data overflows into adjacent memory locations, potentially corrupting the stack frame and allowing execution of arbitrary code. This type of vulnerability is particularly dangerous because it can be triggered remotely through network-based attacks, making it a prime target for exploitation in automated attack scenarios. The attack vector requires the victim to process or open the maliciously crafted ARJ archive, which can occur during normal file handling operations or through automated archive extraction processes.
The operational impact of this vulnerability extends beyond simple code execution, as it can lead to complete system compromise and unauthorized access to sensitive data. Attackers leveraging this vulnerability can potentially gain elevated privileges, install malware, modify system files, or establish persistent backdoors within affected environments. The vulnerability affects systems running TUGZip 3.4.0.0 and potentially other versions that share the same underlying buffer handling code, making it a widespread concern across organizations that rely on this archiving utility for file management operations. Given that ARJ archives were commonly used in the early 2000s for software distribution and file compression, this vulnerability could have been exploited in numerous real-world scenarios including software updates, email attachments, and file sharing operations.
Mitigation strategies for this vulnerability should encompass immediate patching of affected TUGZip installations to the latest available versions that contain proper buffer overflow protections and input validation measures. Organizations should implement comprehensive network monitoring to detect and prevent exploitation attempts targeting this specific vulnerability, while also ensuring that automated systems do not automatically process untrusted archive files. The mitigation approach aligns with defensive techniques outlined in the MITRE ATT&CK framework under the execution and privilege escalation tactics, where attackers might leverage such vulnerabilities to establish persistent access to target systems. Additionally, implementing application whitelisting policies and restricting user permissions for archive processing operations can significantly reduce the attack surface and limit potential exploitation success. Regular security audits and vulnerability assessments should be conducted to identify and remediate similar buffer overflow conditions in other legacy applications that may be vulnerable to analogous attack vectors.