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The CVE-2025-XXXXX vulnerability in Apache Tomcat arises due to improper handling of multipart file uploads, leading to a denial-of-service (DoS) condition. When a malicious user sends a specially crafted multipart request with an excessively large file or an indefinite stream of data, Tomcat fails to enforce proper resource limits. This causes uncontrolled memory consumption, eventually exhausting server resources and making the service unresponsive. The flaw affects the multipart parsing logic in versions 9.0.0.M1 to 9.0.105, 10.1.0-M1 to 10.1.41, and 11.0.0-M1 to 11.0.7.
DailyCVE Form
Platform: Apache Tomcat
Version: 9.0.0-9.0.105
Vulnerability: DoS via multipart
Severity: High
Date: Jun 16, 2025
Prediction: Patch by Jul 10, 2025
What Undercode Say
curl -X POST -F "file=@large_file.bin" http://vulnerable-tomcat/upload
import requests
files = {'file': ('exploit.bin', open('exploit.bin', 'rb'))}
requests.post("http://target/upload", files=files)
How Exploit
- Send oversized multipart upload
- Flood with chunked data
- Crash server via OOM
Protection from this CVE
- Upgrade to 9.0.106
- Apply request throttling
- Limit max upload size
Impact
- Service disruption
- Resource exhaustion
- Unauthorized DoS
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
