Tool Introduction
"TLS LOGJAM Vulnerability Detection" is a professional online tool designed to help users assess whether a website has the LOGJAM man-in-the-middle attack vulnerability. The LOGJAM vulnerability is a severe TLS/SSL flaw that allows attackers to downgrade protected TLS connections by forcing the use of weaker Diffie-Hellman key exchange algorithms, potentially decrypting communication content. This tool conducts an in-depth scan of specified domains, analyzes their TLS configuration, identifies potential LOGJAM vulnerability risks, and helps website administrators and security engineers promptly discover and fix these critical security flaws.
How to Use
- In the provided "Domain" input box, accurately fill in the website domain you need to detect.
- Start the TLS LOGJAM vulnerability scanning process.
- After a short wait, the detection results will be presented in a list or table format at the bottom of the page.
Input Parameter Description:
- Domain (domain): This is a required parameter used to specify the target website domain for vulnerability detection, e.g.,
example.com. Please ensure the entered domain format is correct and that you have permission to perform the detection.
- Options (options): This is a hidden parameter with a value of
-J, used to configure the tool's internal detection mode or behavior; users do not need to manually set or modify it.
Output Result Description:
The detection results will be displayed in a structured list or table format, including the following key information:
- Domain/IP: Displays the detected domain and its resolved IP address.
- Port: Indicates the port number for the TLS connection, usually 443.
- Security: Security assessment of the vulnerability detection results. This field will be visually displayed as a badge, e.g., "OK" indicates no LOGJAM vulnerability detected, and security is good.
- CVE: If a known vulnerability is detected, the corresponding CVE (Common Vulnerabilities and Exposures) number will be provided.
- CWE: If a related weakness is detected, the corresponding CWE (Common Weakness Enumeration) number will be provided.
- Description: Provides a detailed explanation of the detection results, including whether a vulnerability was found and a brief description of the vulnerability.
Usage Example
Example Input:
In the "Domain" input box, enter: baidu.com
Expected Output Results:
After the tool completes the detection, it will usually return a list of results similar to the following (displayed in a table format):
| Domain/IP |
Port |
Security |
CVE |
CWE |
Description |
| baidu.com |
443 |
OK |
N/A |
N/A |
No TLS LOGJAM vulnerability risk detected. |
Specific Operation Demonstration:
1. Open the TLS LOGJAM vulnerability detection tool page.
2. In the input box labeled "Domain", type baidu.com.
3. Click the button labeled "Detect" on the page.
4. After a short wait, the detection results will be displayed at the bottom of the page as shown in the table above, indicating the TLS LOGJAM vulnerability detection result for baidu.com.
Frequently Asked Questions
- Q: What exactly is the TLS LOGJAM vulnerability?
- A: The LOGJAM vulnerability is a man-in-the-middle attack targeting the Diffie-Hellman key exchange in the TLS protocol. It forces connections to use weaker, 512-bit Diffie-Hellman groups previously used for export-grade encryption, allowing attackers to relatively easily break the encryption and eavesdrop on or tamper with communication content.
- Q: What input formats does this tool support?
- A: Currently, this tool only supports entering a single domain for detection, such as
www.example.com. It does not support IP addresses, URL paths, or other batch input formats.
- Q: What does the "OK" badge in the output results represent?
- A: The "OK" badge indicates that no obvious TLS LOGJAM vulnerability risk was found in this detection for the specified domain. This usually means that the website's TLS configuration uses stronger Diffie-Hellman parameters, thus avoiding LOGJAM attacks.
- Q: How long does the detection take?
- A: The detection time usually depends on the target server's response speed and network conditions, generally completing within a few seconds to tens of seconds. For some slower-responding servers, a slightly longer waiting time may be required.
- Q: Can I scan any website?
- A: Please only scan websites for which you have legal authorization or explicit permission. Unauthorized scanning may violate relevant laws and regulations.
Notes
- Please ensure that the domain you enter is accurate, correct, and legitimate, so that the tool can perform the detection correctly.
- This tool focuses on detecting TLS LOGJAM vulnerabilities and does not cover all potential vulnerabilities in the TLS protocol. Therefore, an "OK" detection result only means it's secure regarding LOGJAM, and does not equate to overall TLS/SSL security for the website.
- The detection results are for reference only. It is recommended to combine them with other professional security assessment tools and methods for a comprehensive security audit.
- Please strictly abide by local laws and regulations. Do not use this tool for any illegal, unauthorized, or malicious activities.
- If the detection results indicate a vulnerability, it is strongly recommended that you contact the website administrator to update the server's TLS configuration, especially the Diffie-Hellman parameters, upgrading to at least 2048 bits to enhance security.
