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CVE-2025-57060: Stack Overflow Vulnerability in Tenda G3 Leads to Potential Denial of Service

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Overview

The vulnerability CVE-2025-57060 is a serious cybersecurity issue that primarily affects Tenda G3 version 3.0br_V15.11.0.17. This vulnerability revolves around a stack overflow in the rules parameter within the dns_forward_rule_store function. A successful exploit can lead to a Denial of Service (DoS) attack, which can potentially compromise the system and lead to data leakage.

Vulnerability Summary

CVE ID: CVE-2025-57060
Severity: High (7.5 CVSS Severity Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Denial of Service (DoS) and potential system compromise or data leakage

Affected Products

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Product | Affected Versions

Tenda G3 | v3.0br_V15.11.0.17

How the Exploit Works

The vulnerability works by exploiting a stack overflow in the rules parameter of the dns_forward_rule_store function within Tenda G3. When a maliciously crafted request is sent, it causes the system to overflow, leading to a Denial of Service. This can potentially compromise the system and result in data leakage.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited. This example is a simple HTTP request that sends a malicious payload to the vulnerable endpoint.

POST /dns_forward_rule_store HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "rules": "OVERLY_LONG_STRING_OVERLY_LONG_STRING_OVERLY_LONG_STRING" }

In this example, the `OVERLY_LONG_STRING` would be replaced with a string long enough to cause a stack overflow in the targeted system. This would result in a Denial of Service and potentially open up further avenues for exploitation.

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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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