Overview
The CVE-2025-32402 vulnerability represents a critical security flaw identified in RT-Labs P-Net version 1.0.1 or earlier. This vulnerability, an Out-of-bounds Write, could potentially allow an attacker to induce a crash in IO devices that employ the P-Net library. Such a breach could have severe consequences, leading to system compromise or data leakage, making it a significant concern for users of the affected versions of P-Net.
Vulnerability Summary
CVE ID: CVE-2025-32402
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System crash, potential system compromise or data leakage
Affected Products
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Product | Affected Versions
RT-Labs P-Net | 1.0.1 and earlier
How the Exploit Works
The exploit takes advantage of an Out-of-bounds Write vulnerability in the RT-Labs P-Net software. A malicious actor can send specifically crafted RPC packets, causing an overflow in the memory buffer of the software. This overflow can lead to unexpected behaviour, including system crashes, data corruption, or potentially even allowing the attacker to execute arbitrary code.
Conceptual Example Code
Below is a conceptual example of a malicious RPC packet that could exploit this vulnerability:
POST /rpc/p-net HTTP/1.1
Host: target.example.com
Content-Type: application/x-rpc
{
"method": "malicious.method",
"params": ["A"*5000], // Buffer overflow
"id": 1
}In this example, the `params` array is filled with a string that is longer than the buffer can handle (`”A”*5000`), causing an overflow.
