What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-02-22 · updated 2026-06-17
• Weakness: CWE-434

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.

Affected products

• Apache Software Foundation Apache Answer: before 1.2.5 — fixed in 1.2.5

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Answer 1.2.5. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2024/02/22/1
• https://lists.apache.org/thread/f58l6dr4r74hl6o71gn47kmn44vw12cv
• http://www.openwall.com/lists/oss-security/2024/02/22/1
• https://lists.apache.org/thread/f58l6dr4r74hl6o71gn47kmn44vw12cv

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