CVE-2010-4911 in PHP Classifieds Ads
Summary
by MITRE
SQL injection vulnerability in classi/detail.php in PHP Classifieds Ads allows remote attackers to execute arbitrary SQL commands via the sid parameter.
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Analysis
by VulDB Data Team • 10/30/2025
The vulnerability identified as CVE-2010-4911 represents a critical SQL injection flaw within the PHP Classifieds Ads application, specifically within the classi/detail.php script. This vulnerability arises from insufficient input validation and sanitization of user-supplied data, creating an exploitable pathway for malicious actors to manipulate the underlying database queries. The affected parameter sid, which appears to be a session identifier or similar numeric value, serves as the primary attack vector for this particular vulnerability.
The technical exploitation of this flaw occurs when an attacker crafts malicious input for the sid parameter that gets directly incorporated into SQL query construction without proper sanitization or parameterization. This allows the attacker to inject arbitrary SQL commands that execute within the context of the database connection, potentially enabling full database compromise. The vulnerability falls under the Common Weakness Enumeration category CWE-89, which specifically addresses SQL injection weaknesses where untrusted data is concatenated or embedded into SQL commands without proper escaping or parameterization techniques.
From an operational perspective, the impact of this vulnerability extends far beyond simple data theft. Attackers can leverage this SQL injection flaw to extract sensitive information from the database, including user credentials, personal data, and system configurations. The remote execution capability means that attackers do not require local system access or network proximity to exploit this vulnerability, making it particularly dangerous in publicly accessible web applications. Additionally, the compromised system could serve as a staging ground for further attacks, potentially leading to complete system takeover or data destruction.
The exploitation of this vulnerability aligns with tactics described in the MITRE ATT&CK framework under the T1190 technique for exploitation of remote services, specifically targeting web application vulnerabilities. Organizations running affected PHP Classifieds Ads installations face significant risk of unauthorized data access, data manipulation, and potential service disruption. The vulnerability demonstrates poor input validation practices and highlights the importance of implementing proper database query parameterization techniques. Security practitioners should implement immediate mitigations including input sanitization, parameterized queries, and web application firewalls to prevent exploitation. Additionally, regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in other application components, as this vulnerability represents a common pattern in web application security flaws that frequently appear in legacy systems.