CVE-2006-1123 in D2KBlog
Summary
by MITRE
SQL injection vulnerability in D2KBlog 1.0.3 and earlier allows remote attackers to execute arbitrary SQL commands via the memName parameter in a cookie.
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Analysis
by VulDB Data Team • 08/12/2024
The vulnerability identified as CVE-2006-1123 represents a critical SQL injection flaw discovered in D2KBlog version 1.0.3 and earlier implementations. This vulnerability resides within the application's handling of user input through cookie parameters, specifically targeting the memName parameter that is commonly used for authentication or user identification purposes. The flaw allows malicious actors to inject arbitrary SQL commands into the application's database query execution flow, potentially compromising the entire backend database system. Such vulnerabilities are particularly dangerous because they can be exploited remotely without requiring any local system access or prior authentication credentials, making them highly attractive targets for attackers seeking to gain unauthorized access to sensitive data or system resources.
The technical exploitation of this vulnerability occurs when the D2KBlog application fails to properly sanitize or escape user-supplied input received through the memName cookie parameter. When the application constructs SQL queries using this unsanitized input without appropriate input validation or parameterized query mechanisms, attackers can craft malicious cookie values that alter the intended SQL command structure. This typically involves injecting SQL syntax such as single quotes, semicolons, or SQL comment characters that manipulate the query execution flow to execute unintended database operations. The vulnerability directly maps to CWE-89 which classifies SQL injection as a weakness where untrusted data is incorporated into SQL commands without proper escaping or parameterization, making it one of the most prevalent and dangerous web application security flaws.
The operational impact of this vulnerability extends beyond simple data theft to encompass complete system compromise and potential data destruction. Attackers can leverage this vulnerability to extract sensitive information including user credentials, personal data, and application configuration details from the database. Beyond data exfiltration, malicious actors can modify or delete database records, potentially corrupting application functionality or creating backdoors for persistent access. The remote nature of the exploitation means that attackers can target vulnerable systems from anywhere on the internet, making this vulnerability particularly dangerous for publicly accessible web applications. This type of vulnerability also aligns with several ATT&CK techniques including T1071.004 for application layer protocol manipulation and T1566 for credential access through exploitation of vulnerabilities in web applications.
Mitigation strategies for CVE-2006-1123 should focus on immediate application patching and input validation implementation. The primary solution involves upgrading to a patched version of D2KBlog that properly sanitizes user input and implements parameterized queries or prepared statements for all database interactions. Organizations should also implement proper input validation mechanisms that filter or escape special characters in cookie parameters before processing them. Additional defensive measures include implementing web application firewalls that can detect and block suspicious SQL injection patterns, applying the principle of least privilege to database accounts used by the application, and conducting regular security assessments to identify similar vulnerabilities in other application components. Network-level protections such as intrusion detection systems can help monitor for exploitation attempts, while application-level logging should capture suspicious cookie values for forensic analysis and incident response activities.