A recently discovered vulnerability (CVE-2024-12362) in InvoicePlane versions up to 1.6.1 has been classified as problematic, affecting the function 'download' of the file 'invoices.php'. This issue allows for a path traversal attack by manipulating the 'invoice' argument. This vulnerability can be initiated remotely and has been publicly disclosed, meaning it could potentially be exploited by malicious actors. Thankfully, there is a fix available by upgrading to InvoicePlane version 1.6.2-beta-1. This article provides a detailed explanation of the vulnerability, exploit details, and the importance of upgrading to the recommended version.

Vulnerability Details

The vulnerability is located in the 'download' function within the 'invoices.php' file, which is responsible for generating invoice PDF files for download. By manipulating the 'invoice' argument, it is possible for an attacker to gain unauthorized access to files and directories on the affected server. This type of attack is known as path traversal and can lead to sensitive data exposure, security breaches, and other potential consequences.

Exploit Details

The exploit can be initiated remotely, which adds to its severity. A potential attacker can use various techniques to alter the 'invoice' argument in a manner that will cause the path traversal. Below is an example of the vulnerable code snippet:

// invoices.php
// ...
function download($invoice_id) {
    $this->load->helper('download');
    $this->load->library('invoices/pdf');
    $this->output->enable_profiler(FALSE);

    $invoice = $this->invoice->get_invoice_by_id($invoice_id);
    $data = file_get_contents(UPLOADPATH . 'invoices_cache/' . $invoice->invoice_hash . '.pdf'); // <-- vulnerable code
    force_download($this->config->item('invoice_number_format'), $data);
}

- CVE information: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-12362
- InvoicePlane GitHub issue: https://github.com/InvoicePlane/InvoicePlane/issues/994

Resolution and Recommendations

To mitigate the risk of being affected by this vulnerability, users are strongly advised to upgrade their InvoicePlane installations to version 1.6.2-beta-1 or later. The vendor has been very responsive and actively addressed the issue by releasing a fixed version of the product.

It is essential to keep your software up to date to prevent potential security breaches that can result from unpatched vulnerabilities. In this case, upgrading to the recommended version will protect your installation from potential exploitation.

Conclusion

This article has addressed the vulnerability identified as CVE-2024-12362 and its consequences. By providing a detailed explanation of the vulnerability, exploit details, and steps to remediation, users can have a better understanding of how to protect their systems from potential threats. Regularly updating your software and staying informed about potential vulnerabilities will enable you to maintain a secure and functional IT environment.

Timeline

Published on: 12/16/2024 10:15:05 UTC