CVE-2021-41561 Explained : Impact and Mitigation
Learn about CVE-2021-41561, an Improper Input Validation vulnerability in Apache Parquet-MR, allowing attackers to perform DoS attacks via malicious Parquet files. Find mitigation steps and version upgrades.
Apache Parquet-MR potential Denial of Service (DoS) vulnerability due to improper input validation in Apache Parquet.
Understanding CVE-2021-41561
What is CVE-2021-41561?
CVE-2021-41561 is an Improper Input Validation vulnerability in Parquet-MR of Apache Parquet, enabling an attacker to launch a DoS attack using malicious Parquet files.
The Impact of CVE-2021-41561
This vulnerability affects Apache Parquet-MR version 1.9.0 and later versions, allowing attackers to potentially disrupt system availability.
Technical Details of CVE-2021-41561
Vulnerability Description
The flaw arises from inadequate input validation in Parquet-MR, enabling the exploitation by malicious Parquet files to cause denial of service.
Affected Systems and Versions
- Product: Apache Parquet
- Vendor: Apache Software Foundation
- Versions affected: Versions Parquet-MR 1.9.0 and later
Exploitation Mechanism
The vulnerability can be exploited through specially crafted Parquet files causing a DoS condition.
Mitigation and Prevention
Immediate Steps to Take
- Upgrade to version 1.12.2 for 1.12.x users
- Upgrade to version 1.11.2 for 1.11.x users
- Users of versions <= 1.10.x should upgrade to either 1.12.2 or 1.11.2
Long-Term Security Practices
- Validate and sanitize user inputs to prevent similar vulnerabilities
Patching and Updates
Stay informed about security patches and version updates to mitigate the risk of exposure.