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CVE-2025-2900: Buffer Overflow Leading to Denial of Service in IBM Semeru Runtime

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Overview

This report provides a detailed analysis of the CVE-2025-2900 vulnerability. This vulnerability affects IBM Semeru Runtime versions 8.0.302.0 through 8.0.442.0, 11.0.12.0 through 11.0.26.0, 17.0.0.0 through 17.0.14.0, and 21.0.0.0 through 12.0.6.0. The issue stems from a flaw in the native AES/CBC encryption implementation, potentially causing system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-2900
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Denial of service, potential system compromise and data leakage

Affected Products

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Product | Affected Versions

IBM Semeru Runtime | 8.0.302.0 – 8.0.442.0
IBM Semeru Runtime | 11.0.12.0 – 11.0.26.0
IBM Semeru Runtime | 17.0.0.0 – 17.0.14.0
IBM Semeru Runtime | 21.0.0.0 – 12.0.6.0

How the Exploit Works

The exploit works by sending a large volume of data to the server running affected versions of IBM Semeru Runtime. This overloads the buffer in the AES/CBC encryption implementation, causing a buffer overflow. This overflow results in a crash, causing a denial of service. In some instances, it may also lead to system compromise or data leakage.

Conceptual Example Code

import socket
buffer = "A" * 5000
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(("target_IP", target_port))
s.send(buffer)
s.close()

In the above sample Python script, an attacker could potentially overload the buffer by sending a large amount of data (“A” * 5000), causing the system to crash and possibly enable the exploitation of additional vulnerabilities.

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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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