In this article, we will delve into a reported vulnerability in Apache Ranger (known as CVE-2024-55532), specifically relating to the improper neutralization of formula elements when exporting data in CSV format within Apache Ranger version 2.6. or earlier. To mitigate this vulnerability, users should upgrade to the latest version of the software. We will proceed to provide an overview of the vulnerability, its corresponding exploits, and the necessary remedial steps to prevent its potential consequences.
Background
Apache Ranger (an open-source project developed by the Apache Software Foundation) provides a centralized platform and solution for security administration in big data environments. Through an intuitive user interface and efficient policy management, Apache Ranger allows administrators to define, monitor, and manage user access to Hadoop clusters while enforcing various security policies.
When exporting data in CSV format in affected versions of Apache Ranger, it fails to neutralize the formula elements properly due to a vulnerability in the software (known as CVE-2024-55532). If exploited, it can potentially lead to code and command execution through a user's manipulation of the CSV file content.
Original References
The CVE record and Apache Ranger's release notes both provide helpful context on this vulnerability and its resolution:
1. CVE Record
2. Apache Ranger 2.6. Release Notes
Exploit Details
The main concern with this vulnerability stems from an attacker's ability to manipulate the contents of an exported CSV file by incorporating malicious or unintended formulas. When unsuspecting users open the manipulated .csv file in Excel, these formulas may automatically execute, potentially leading to the unintended disclosure or corruption of data.
To demonstrate the vulnerability, let's assume we have a CSV file that contains the following data, exported through an affected version of Apache Ranger:
Name,Email,Role
Alice,alice@example.com,Admin
Bob,bob@example.com,User
=cmd|'/C calc'!A,attacker@example.com,Exploit
In this example, when the exported .csv file is opened in Microsoft Excel, the formula =cmd|'/C calc'!A (inserted by an attacker) could execute and open the calculator application.
Mitigation
Users are advised to upgrade to Apache Ranger version 2.6. or later as it resolves this vulnerability by properly neutralizing formula elements during the export CSV process. To upgrade, follow the official Apache Ranger upgrade guidelines.
In addition to upgrading, users should also treat exported CSV files cautiously before opening them in spreadsheet applications like Microsoft Excel or Google Sheets to prevent potential consequences. If you suspect an exported CSV file to be manipulated or compromised, you may examine and sanitize the contents using a plain text editor or specialized CSV viewer before opening it in a spreadsheet application.
Conclusion
As we have seen, improper neutralization of formula elements in Apache Ranger's export CSV feature leads to CVE-2024-55532. It can potentially enable an attacker to compromise or corrupt data through the manipulation of the exported CSV file content. By upgrading to the latest version of Apache Ranger, users can safely resolve the vulnerability and avoid any adverse consequences. Be sure to follow proper security practices, such as verifying the integrity of your data files and keeping your software up-to-date to mitigate the risk of future vulnerabilities.
Timeline
Published on: 03/03/2025 16:15:38 UTC
Last modified on: 03/04/2025 17:15:13 UTC