CVE-2012-5171 in BeZIP
Summary
by MITRE
Directory traversal vulnerability in Be Graph BeZIP before 3.10 allows remote attackers to create or overwrite arbitrary files via a crafted archive file.
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Analysis
by VulDB Data Team • 02/23/2019
The CVE-2012-5171 vulnerability represents a critical directory traversal flaw in Be Graph BeZIP software versions prior to 3.10, exposing systems to remote exploitation through maliciously crafted archive files. This vulnerability falls under the CWE-22 category, which specifically addresses directory traversal or path traversal attacks, where attackers can manipulate file paths to access or modify files outside of intended directories. The flaw enables remote attackers to manipulate the archive extraction process, allowing them to create or overwrite arbitrary files on the target system, potentially leading to privilege escalation, data corruption, or system compromise. The vulnerability exists in the archive processing logic where input validation is insufficient, permitting attackers to inject malicious path sequences that bypass normal file access controls.
The technical exploitation of this vulnerability requires an attacker to craft a specially formatted archive file containing directory traversal sequences such as ../ or ..\ that manipulate the extraction path during archive processing. When the vulnerable Be Graph BeZIP application processes this malicious archive, it fails to properly sanitize or validate the file paths contained within the archive, allowing the attacker to specify arbitrary destinations for file extraction. This flaw specifically impacts the application's handling of relative paths and does not require authentication to exploit, making it particularly dangerous in environments where untrusted archive files are processed automatically. The vulnerability can be leveraged to overwrite critical system files, inject malicious code, or create backdoor access points within the target system's file structure.
The operational impact of CVE-2012-5171 extends beyond simple file manipulation, as it can serve as a foundational attack vector for more sophisticated compromise techniques. Attackers can use this vulnerability to escalate privileges by overwriting system binaries or configuration files, potentially gaining root or administrator access to affected systems. The vulnerability also poses significant risks in web applications or services that process user-uploaded archives, as it can enable attackers to upload and execute malicious files in unintended locations. Organizations using Be Graph BeZIP for document management, file sharing, or automated processing workflows face potential exposure to data loss, system compromise, or unauthorized access to sensitive information. The remote nature of this vulnerability means that attackers do not require physical access to the system, and the attack can be executed through network-based delivery mechanisms.
Mitigation strategies for CVE-2012-5171 should prioritize immediate software updates to version 3.10 or later, which contains the necessary patches to address the directory traversal vulnerability. System administrators should implement strict input validation and sanitization procedures for all archive processing activities, including the use of absolute path validation and the removal of special path sequences from archive contents. Network segmentation and access controls should be enforced to limit the potential impact of exploitation, while monitoring systems should be configured to detect suspicious file operations or unusual archive processing activities. The vulnerability aligns with ATT&CK technique T1059, which covers command and scripting interpreter usage, as attackers may leverage the ability to create malicious files to establish persistent access. Additionally, organizations should conduct comprehensive vulnerability assessments to identify other potentially affected systems and implement robust file integrity monitoring to detect unauthorized file modifications resulting from exploitation attempts.