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CVE-2025-36097: Denial of Service Vulnerability in IBM WebSphere Application Server

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Overview

The vulnerability CVE-2025-36097 affects IBM WebSphere Application Server 9.0 and WebSphere Application Server Liberty 17.0.0.3 through 25.0.0.7. It’s a critical issue as it could lead to a denial of service due to a stack-based overflow condition. This vulnerability, if exploited, can cause the server to consume excessive memory resources, potentially resulting in system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-36097
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Denial of Service, potential system compromise, or data leakage

Affected Products

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Product | Affected Versions

IBM WebSphere Application Server | 9.0
IBM WebSphere Application Server Liberty | 17.0.0.3 – 25.0.0.7

How the Exploit Works

The vulnerability is triggered when the server receives a specially crafted request designed to cause a stack-based buffer overflow. This overflow can lead to excessive consumption of memory resources, causing a denial of service. It’s also possible that this vulnerability might be further exploited to compromise the system or to leak data.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited. In this example, a maliciously crafted POST request is sent to a vulnerable endpoint on the target server.

POST /vulnerable/endpoint HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "malicious_payload": "StackOverflowTriggeringData" }

This malicious payload is designed to trigger a stack overflow, thus exploiting the vulnerability and causing the server to consume excessive memory resources.

Countermeasures

The best mitigation strategy is to apply the vendor’s patch for the vulnerability. In cases where this is not immediately possible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation by detecting and blocking exploit attempts.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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