CVE-2022-2139 in iView
Summary
by MITRE • 07/22/2022
The affected product is vulnerable to directory traversal, which may allow an attacker to access unauthorized files and execute arbitrary code.
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Analysis
by VulDB Data Team • 08/20/2022
The vulnerability identified as CVE-2022-2139 represents a critical directory traversal flaw that exposes systems to unauthorized file access and potential code execution. This weakness occurs when applications fail to properly validate user-supplied input before using it to access file system resources, creating opportunities for attackers to manipulate file paths and gain access to sensitive system components. The vulnerability stems from inadequate input sanitization mechanisms that allow malicious actors to traverse directory structures beyond intended boundaries. Attackers can exploit this weakness by crafting specially formatted requests that include directory traversal sequences such as ../ or ..\, enabling them to access files outside the designated application directories.
The technical implementation of this vulnerability aligns with CWE-22, which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal or directory traversal. This weakness allows attackers to access files and directories that are not directly accessible to the application, potentially leading to sensitive data exposure, system compromise, or complete denial of service. The attack vector typically involves sending malicious input through web interfaces, APIs, or file upload mechanisms where the application processes user-supplied paths without proper validation. When the application processes these paths, it may resolve them relative to the application's working directory, allowing access to arbitrary files on the system. The vulnerability can manifest in various forms including file inclusion, file download, or file upload functionalities where path manipulation is possible.
The operational impact of CVE-2022-2139 extends beyond simple unauthorized file access, as it can enable attackers to execute arbitrary code on the affected system. This capability arises when attackers can manipulate file paths to access system binaries, configuration files, or scripts that can be executed with the privileges of the vulnerable application. The vulnerability may lead to complete system compromise, data exfiltration, or the installation of persistent backdoors. Organizations may experience significant disruption to their operations as attackers can access critical system files, application configuration data, and user information. The attack surface is particularly concerning in web applications where user input is frequently processed without proper sanitization, making the vulnerability exploitable through common web attack vectors. The potential for remote code execution through directory traversal makes this vulnerability particularly dangerous as it can be exploited without requiring local system access.
Mitigation strategies for CVE-2022-2139 should focus on implementing robust input validation and sanitization mechanisms. Organizations should employ proper path validation techniques that reject or sanitize input containing directory traversal sequences before processing. The implementation of secure coding practices including the use of allowlists for acceptable file paths, proper input encoding, and the principle of least privilege when accessing file system resources can significantly reduce the attack surface. System administrators should ensure that applications are configured to run with minimal required privileges and that file access controls are properly enforced. Regular security testing including penetration testing and code reviews should be conducted to identify and remediate similar vulnerabilities. Additionally, implementing web application firewalls and intrusion detection systems can help detect and prevent exploitation attempts. The remediation process should include updating affected applications to versions that address the vulnerability, implementing proper access controls, and conducting comprehensive security assessments to identify potential similar weaknesses in the system architecture. Organizations should also consider implementing automated monitoring solutions to detect unusual file access patterns that may indicate exploitation attempts.