Source: cve@mitre.org
SQL injection vulnerability in detail.php in DeltaScripts PHP Classifieds 7.5 and earlier allows remote attackers to execute arbitrary SQL commands via the siteid parameter, a different vector than CVE-2006-5828.
DeltaScripts PHP Classifieds 7.5 and earlier are vulnerable to a critical SQL injection flaw, allowing attackers to execute arbitrary SQL commands. This vulnerability, exploitable through the siteid parameter in detail.php, can lead to complete database compromise, including data theft and server takeover.
Step 1: Identify Target: The attacker identifies a vulnerable instance of DeltaScripts PHP Classifieds 7.5 or earlier.
Step 2: Craft Malicious Payload: The attacker constructs a malicious SQL injection payload designed to exploit the siteid parameter in detail.php. This payload will include SQL commands to achieve the attacker's objectives (e.g., data retrieval, authentication bypass, or command execution).
Step 3: Payload Delivery: The attacker sends a crafted HTTP request to detail.php containing the malicious payload in the siteid parameter. For example: detail.php?siteid=1' UNION SELECT 1,2,version(),4--
Step 4: Query Execution: The vulnerable detail.php script receives the request and incorporates the attacker's input directly into an SQL query without proper sanitization.
Step 5: Database Interaction: The database server executes the modified SQL query, which now includes the attacker's malicious commands.
Step 6: Data Exfiltration/Exploitation: Depending on the payload, the attacker can retrieve sensitive data (e.g., usernames, passwords), bypass authentication, or potentially execute commands on the server through stored procedures or other database features.
The vulnerability stems from a lack of proper input validation and sanitization of the siteid parameter within the detail.php script. The application directly incorporates user-supplied input into SQL queries without escaping special characters or employing parameterized queries. This allows an attacker to inject malicious SQL code, altering the intended query logic and enabling unauthorized access to the database. The root cause is a failure to implement secure coding practices, specifically the absence of input validation and parameterized queries, leading to a classic SQL injection vulnerability.
While no specific APTs are definitively linked, this type of vulnerability is commonly exploited by various threat actors, including those seeking to steal data, deface websites, or establish a foothold for further attacks. This vulnerability is not listed on the CISA KEV.
Web server logs: Look for unusual HTTP requests to detail.php with suspicious siteid parameter values containing SQL keywords (e.g., SELECT, UNION, WHERE, UPDATE, INSERT, DROP).
Database logs: Monitor database query logs for unexpected queries originating from the web server, especially those with unusual syntax or attempts to access system tables.
Intrusion Detection/Prevention Systems (IDS/IPS): Deploy and configure IDS/IPS rules to detect SQL injection attempts based on known attack patterns and signatures.
File Integrity Monitoring (FIM): Monitor the integrity of detail.php and other critical files to detect unauthorized modifications.
Upgrade to a patched version of DeltaScripts PHP Classifieds or a completely different classifieds solution. Ensure the upgrade includes the security fixes addressing CVE-2008-5805.
Implement input validation: Sanitize all user-supplied input, especially the siteid parameter, to remove or escape special characters that could be used in SQL injection attacks.
Use parameterized queries (prepared statements): Employ parameterized queries to separate the SQL code from the user-supplied data, preventing the attacker from injecting malicious code.
Apply the principle of least privilege: Configure the database user account used by the web application with the minimum necessary privileges to perform its functions.
Web Application Firewall (WAF): Deploy a WAF to filter malicious traffic and block SQL injection attempts.
Regular Security Audits: Conduct regular security audits and penetration testing to identify and address vulnerabilities.