CVE-2022-28945 in WeCube
Summary
by MITRE • 06/02/2022
An issue in Webbank WeCube v3.2.2 allows attackers to execute a directory traversal via a crafted ZIP file.
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Analysis
by VulDB Data Team • 06/06/2022
The vulnerability identified as CVE-2022-28945 affects Webbank WeCube version 3.2.2 and represents a critical directory traversal flaw that can be exploited through maliciously crafted ZIP archives. This vulnerability resides in the application's handling of compressed files during the extraction process, where insufficient input validation allows attackers to manipulate file paths and gain unauthorized access to the underlying file system. The flaw stems from inadequate sanitization of archive contents, particularly when processing relative path references such as ../ or ..\ sequences that should be rejected or properly resolved. Such directory traversal vulnerabilities have been consistently categorized under CWE-22 by the Common Weakness Enumeration framework, which specifically addresses improper limitation of a pathname to a restricted directory. The attack vector involves an adversary uploading or processing a ZIP file containing specially crafted file paths that, when extracted, can write files outside the intended target directory. This behavior enables malicious actors to potentially overwrite critical system files, access sensitive data, or establish persistent access points within the application's operational environment. The vulnerability's impact extends beyond simple file access as it can facilitate more sophisticated attacks including privilege escalation, data exfiltration, and system compromise, making it particularly dangerous in enterprise environments where WeCube applications may be deployed with elevated privileges. From an operational perspective, this vulnerability represents a significant risk to organizations relying on WeCube for their banking and financial services infrastructure, as it could enable attackers to gain unauthorized access to sensitive financial data or disrupt critical banking operations. The attack scenario typically involves an initial compromise through file upload functionality, followed by exploitation of the directory traversal mechanism to place malicious payloads in strategic locations within the file system. According to the MITRE ATT&CK framework, this vulnerability aligns with techniques related to privilege escalation and persistence, as attackers can leverage the ability to write arbitrary files to establish backdoors or modify system configurations. Organizations using WeCube v3.2.2 should immediately implement mitigations including input validation for all file upload operations, implementation of strict path validation during archive extraction, and deployment of web application firewalls to detect and block suspicious file path sequences. The remediation process requires updating to the latest version of WeCube where this vulnerability has been patched, implementing proper access controls for file processing operations, and conducting thorough security audits of existing file handling mechanisms. Additionally, security monitoring should be enhanced to detect anomalous file system access patterns that may indicate exploitation attempts. The vulnerability demonstrates the critical importance of proper input validation in file handling operations and highlights the need for robust security controls in financial applications where data integrity and system availability are paramount considerations. Organizations should also consider implementing automated vulnerability scanning tools that can identify similar path traversal flaws in other applications within their infrastructure, as such vulnerabilities often share common underlying causes and exploitation patterns across different software platforms.