// For flags

CVE-2025-25193

Denial of Service attack on windows app using Netty

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

Netty, an asynchronous, event-driven network application framework, has a vulnerability in versions up to and including 4.1.118.Final. An unsafe reading of environment file could potentially cause a denial of service in Netty. When loaded on an Windows application, Netty attempts to load a file that does not exist. If an attacker creates such a large file, the Netty application crash. A similar issue was previously reported as CVE-2024-47535. This issue was fixed, but the fix was incomplete in that null-bytes were not counted against the input limit. Commit d1fbda62d3a47835d3fb35db8bd42ecc205a5386 contains an updated fix.

Netty, un framework de aplicación de red asincrónico y controlado por eventos, tiene una vulnerabilidad en las versiones hasta la 4.1.118.Final incluida. Una lectura no segura del archivo de entorno podría causar una denegación de servicio en Netty. Cuando se carga en una aplicación de Windows, Netty intenta cargar un archivo que no existe. Si un atacante crea un archivo tan grande, la aplicación Netty se bloquea. Anteriormente se informó de un problema similar como CVE-2024-47535. Este problema se solucionó, pero la solución estaba incompleta porque los bytes nulos no se contabilizaban en el límite de entrada. El commit d1fbda62d3a47835d3fb35db8bd42ecc205a5386 contiene una solución actualizada.

A flaw was found in Netty. An unsafe reading of the environment file could cause a denial of service. When loaded on a Windows application, Netty attempts to load a file that does not exist. If an attacker creates a large file, the Netty application crash.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
Single
Confidentiality
None
Integrity
None
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
Poc
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2025-02-03 CVE Reserved
  • 2025-02-10 CVE Published
  • 2025-02-21 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-400: Uncontrolled Resource Consumption
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Netty
Search vendor "Netty"
Netty
Search vendor "Netty" for product "Netty"
<= 4.1.118
Search vendor "Netty" for product "Netty" and version " <= 4.1.118"
en
Affected