CVE-2006-3326 in QuickZip
Summary
by MITRE
Directory traversal vulnerability in QuickZip 3.06.3 allows remote user-assisted attackers to overwrite arbitrary files or directories via .. (dot dot) sequences in filenames within (1) TAR,(2) GZ, and (3) JAR archives. NOTE: the provenance of this information is unknown; the details are obtained solely from third party information.
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Analysis
by VulDB Data Team • 07/30/2018
The CVE-2006-3326 vulnerability represents a critical directory traversal flaw in QuickZip 3.06.3 that exposes systems to remote user-assisted attacks through manipulated archive files. This vulnerability specifically affects TAR, GZ, and JAR archive formats, creating a significant security risk for organizations relying on these compression and packaging technologies. The flaw stems from insufficient input validation within the archive extraction process, where the software fails to properly sanitize filenames containing directory traversal sequences.
The technical implementation of this vulnerability involves the exploitation of .. (dot dot) sequences within archive filenames, which allows attackers to manipulate the extraction path of files. When QuickZip processes these maliciously crafted archive entries, it does not adequately validate the presence of directory traversal components in filenames, enabling attackers to specify arbitrary target locations for file extraction. This weakness falls under CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal attacks. The vulnerability demonstrates a classic example of insufficient input sanitization where the application fails to properly handle special characters in file paths.
The operational impact of this vulnerability extends beyond simple file overwrites to encompass potential system compromise through directory traversal attacks. Attackers can leverage this flaw to overwrite critical system files, inject malicious code into existing applications, or manipulate directory structures to gain unauthorized access to sensitive data. The remote user-assisted nature of this vulnerability means that attackers do not require direct system access or authentication, making the attack surface significantly broader than local privilege escalation vulnerabilities. This characteristic aligns with ATT&CK technique T1059, which covers the execution of malicious code through compromised software components, and T1074, which addresses data manipulation through file system access.
Organizations utilizing QuickZip 3.06.3 or similar archive processing software face substantial risk from this vulnerability, particularly in environments where archive files are processed from untrusted sources. The attack vector through TAR, GZ, and JAR formats creates multiple potential entry points since these are widely used compression and packaging formats across various platforms and applications. The vulnerability's impact is amplified by the fact that many automated systems process archive files without proper validation, creating opportunities for malicious actors to exploit the flaw during routine operations. System administrators should consider implementing strict file validation policies, restricting archive processing from untrusted sources, and deploying network monitoring to detect suspicious file extraction activities that might indicate exploitation attempts.
Recommended mitigations for this vulnerability include immediate patching of QuickZip installations to versions that properly sanitize archive filenames, implementing input validation mechanisms that reject directory traversal sequences, and establishing secure file handling practices that prevent arbitrary file overwrites. Organizations should also consider deploying intrusion detection systems that monitor for suspicious path traversal patterns in archive processing activities, as well as implementing principle of least privilege access controls to limit the potential damage from successful exploitation attempts. The vulnerability serves as a reminder of the critical importance of proper input validation in archive processing software and highlights the need for comprehensive security testing of file handling components within applications.