CVE-2024-22393
Published: 22 February 2024
Summary
CVE-2024-22393 is a critical-severity Unrestricted Upload of File with Dangerous Type (CWE-434) vulnerability in Apache Answer. Its CVSS base score is 9.1 (Critical).
Operationally, ranked in the top 3.5% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2024-22393 is an unrestricted file upload vulnerability, also described as enabling pixel flood attacks via oversized image files, that affects Apache Answer through version 1.2.1. The flaw is tracked under CWE-434 and carries a CVSS 3.1 score of 9.1.
A logged-in user can exploit the issue by uploading a crafted image when posting content, resulting in excessive memory consumption that can render the server unavailable and produce high integrity and availability impacts.
Apache advisories recommend upgrading to version 1.2.5 to resolve the vulnerability.
The EPSS score reached a peak of 0.3236 after disclosure before settling at the current value of 0.2673, indicating emerging exploitation interest that warrants renewed attention.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-0720
Vulnerability details
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…
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uploading an image when posting content. Users are recommended to upgrade to version [1.2.5], which fixes the issue.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requiring identifiable owners for portable devices reduces the attack surface for unrestricted uploads of dangerous file types via anonymous media.
Dangerous file uploads can be detonated in the chamber to determine malice before any production write or execution occurs.
Prevents unrestricted writing of arbitrary or malicious firmware by keeping hardware write-protect enabled except under tightly controlled manual procedures.
Scans files from external sources on download/open/execute, blocking unrestricted uploads of dangerous file types.