CVE-2011-3989 in DBD::mysqlPP
Summary
by MITRE
SQL injection vulnerability in DBD::mysqlPP 0.04 and earlier allows remote attackers to execute arbitrary SQL commands via unspecified vectors.
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Analysis
by VulDB Data Team • 01/10/2018
The CVE-2011-3989 vulnerability represents a critical SQL injection flaw within the DBD::mysqlPP Perl module version 0.04 and earlier. This database driver interface for MySQL connections exposes a significant security weakness that enables remote attackers to manipulate database operations through carefully crafted input. The vulnerability stems from inadequate input validation and sanitization within the module's handling of database queries, creating an avenue for malicious actors to inject arbitrary SQL commands into the underlying database system.
The technical implementation of this vulnerability involves the module's failure to properly escape or parameterize user-supplied data before incorporating it into SQL query strings. When applications using DBD::mysqlPP process user input without proper sanitization, the module passes this unvalidated data directly to the MySQL database engine, allowing attackers to manipulate the intended query execution flow. This flaw operates at the application layer and can be exploited through various attack vectors including web forms, API endpoints, or any interface that utilizes the vulnerable module for database communication.
From an operational impact perspective, this vulnerability poses severe risks to database security and data integrity. Attackers can leverage the SQL injection to extract sensitive information from databases, modify or delete critical records, escalate privileges within the database system, or even gain unauthorized access to underlying database servers. The remote nature of the attack means that exploitation can occur from any location without requiring physical access to the target system, making it particularly dangerous for web applications and services that expose database functionality to external users.
The vulnerability aligns with CWE-89, which specifically addresses SQL injection weaknesses in software applications, and demonstrates characteristics consistent with ATT&CK technique T1071.004 for application layer protocol manipulation. Organizations using affected versions of DBD::mysqlPP face potential data breaches, regulatory compliance violations, and significant operational disruption. The attack surface extends beyond individual applications to encompass entire database ecosystems, as successful exploitation can lead to cascading effects throughout connected systems.
Mitigation strategies should prioritize immediate patching of the DBD::mysqlPP module to versions that address the input validation deficiencies. System administrators must implement comprehensive input sanitization measures, including parameterized queries, prepared statements, and proper data validation routines. Additionally, network segmentation, database access controls, and monitoring solutions should be deployed to detect and prevent exploitation attempts. Regular security assessments and vulnerability scanning should be conducted to identify other potential SQL injection vulnerabilities within the application stack, while maintaining updated security patches across all database-related components to prevent similar issues from emerging in the future.