NexusPHP 1.5 SQL Injection Vulnerability (CVE-2017-12776) Analysis and Exploitation

From the provided description, we can extract the following key information about the CVE-2017-12776 vulnerability: Vulnerability ID: CVE-2017-12776 Affected Software: NexusPHP 1.5 Vulnerability Type: SQL Injection Vulnerability Description: In the default installation configuration, if the database access privilege is set to root, administrative privileges are required to complete the attack. Attackers can exploit this vulnerability to write backdoor files to the server. Code Snippets: Exploitation Method: - Exploit the SQL injection vulnerability in the page by manipulating the parameter to execute arbitrary SQL statements. - Example malicious POST requests: - - - These requests cause a 5-second delay in page response, confirming the presence of an SQL injection vulnerability. Impact: Attackers can exploit the SQL injection vulnerability to write backdoor files and further gain control over the server. Vulnerability Prevention To prevent exploitation of this vulnerability, the following measures should be taken: Strictly validate and filter user input to prevent SQL injection attacks. Limit database user privileges and avoid using root privileges. Promptly patch software vulnerabilities and apply the latest security updates. Exploitation Steps To exploit this vulnerability, an attacker must: 1. Access the target server and locate the page. 2. Construct a malicious POST request, exploiting the SQL injection vulnerability in the parameter. 3. Execute arbitrary SQL statements to write backdoor files and gain further control over the server. Notes on Exploitation Avoid malicious actions that may negatively impact the server or network. Comply with relevant laws and regulations, and conduct vulnerability testing and exploitation legally and responsibly to ensure network security.

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NexusPHP 1.5 SQL Injection Vulnerability (CVE-2017-12776) Analysis and Exploitation