CVE-2010-4796 in PHPYun
Summary
by MITRE
Multiple SQL injection vulnerabilities in PHPYun 1.1.6 allow remote attackers to execute arbitrary SQL commands via the (1) provinceid parameter to search.php and the (2) e parameter to resumeview.php.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 02/09/2019
The vulnerability identified as CVE-2010-4796 represents a critical SQL injection flaw affecting PHPYun version 1.1.6, a content management system widely used for job portals and recruitment websites. This vulnerability exposes the application to remote code execution attacks through improper input validation mechanisms that fail to sanitize user-supplied data before incorporating it into SQL queries. The flaw specifically manifests in two distinct attack vectors within the application's core functionality, creating multiple entry points for malicious actors to compromise the system's database integrity.
The technical implementation of this vulnerability stems from the application's failure to properly escape or parameterize user input before executing database operations. When attackers manipulate the provinceid parameter in search.php or the e parameter in resumeview.php, they can inject malicious SQL code that bypasses normal authentication and authorization checks. This occurs because the application directly concatenates user-supplied values into SQL query strings without adequate sanitization or prepared statement usage, creating a classic SQL injection scenario that falls under CWE-89 - Improper Neutralization of Special Elements used in an SQL Command. The vulnerability enables attackers to execute arbitrary SQL commands with the privileges of the database user account under which the application operates.
The operational impact of CVE-2010-4796 extends beyond simple data theft, as successful exploitation can lead to complete system compromise through database enumeration, data manipulation, and potential privilege escalation. Attackers can extract sensitive information including user credentials, personal data, and system configuration details from the underlying database. The vulnerability also provides opportunities for attackers to modify or delete critical data, potentially causing service disruption and data integrity issues. Furthermore, the attack surface is particularly concerning given that PHPYun applications often contain sensitive recruitment data, making the system a prime target for data breach attempts. According to ATT&CK framework category T1190 - Exploit Public-Facing Application, this vulnerability represents a common attack pattern where adversaries target web applications to gain unauthorized access to backend systems.
Mitigation strategies for this vulnerability require immediate implementation of proper input validation and parameterized query usage throughout the application codebase. The most effective solution involves replacing direct string concatenation in SQL queries with prepared statements or stored procedures that separate SQL command structure from data values. Organizations should implement comprehensive input sanitization routines that filter or escape special characters commonly used in SQL injection attacks including single quotes, semicolons, and comment delimiters. Additionally, application developers must conduct thorough code reviews and implement security testing practices including dynamic application security testing and static code analysis to identify similar vulnerabilities. Network-level protections such as web application firewalls and intrusion detection systems can provide additional defense-in-depth measures. The remediation process should also include updating the PHPYun application to a patched version that addresses this specific vulnerability, as the original version 1.1.6 contains multiple other security flaws that compound the overall risk profile of the system.