CVE-2008-5767 in gNews Publisher
Summary
by MITRE
SQL injection vulnerability in authors.asp in gNews Publisher allows remote attackers to execute arbitrary SQL commands via the authorID parameter.
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Analysis
by VulDB Data Team • 11/19/2024
The vulnerability identified as CVE-2008-5767 represents a critical sql injection flaw within the gnews publisher application's authors.asp component. This vulnerability specifically targets the authorID parameter, which serves as an entry point for malicious actors to inject arbitrary sql commands into the underlying database system. The flaw exists due to insufficient input validation and sanitization mechanisms within the application's parameter handling process, allowing attackers to manipulate the sql query execution flow through crafted malicious inputs.
The technical exploitation of this vulnerability follows standard sql injection attack patterns where the authorID parameter is manipulated to alter the intended database query structure. When the application processes user-supplied authorID values without proper sanitization, the sql command construction becomes susceptible to manipulation. Attackers can append sql syntax elements such as semicolons, comments, or union select statements to the authorID value, effectively bypassing normal query execution boundaries and gaining unauthorized access to database operations. This flaw directly maps to common weakness enumerations such as cwe-89 sql injection and cwe-20 improper input validation, both of which are categorized under the software security quality assurance framework.
The operational impact of this vulnerability extends beyond simple data theft, as successful exploitation can lead to complete database compromise including unauthorized data modification, deletion, or extraction of sensitive information. Remote attackers can leverage this vulnerability to escalate privileges within the database system, potentially gaining access to administrative accounts or confidential user data. The attack surface is particularly concerning as it allows for arbitrary code execution within the database context, enabling attackers to perform operations such as creating new database users, modifying existing records, or even executing system-level commands depending on the database configuration and permissions. This vulnerability aligns with attack techniques documented in the mitre att&ck framework under the execution and credential access domains, specifically targeting database access and privilege escalation vectors.
Mitigation strategies for CVE-2008-5767 should focus on implementing proper input validation and parameterized query execution throughout the application codebase. The most effective remediation involves adopting prepared statements or parameterized queries that separate sql command structure from user input data, thereby preventing the injection of malicious sql fragments. Additionally, comprehensive input sanitization measures including character set validation, length restrictions, and proper escaping of special sql characters should be implemented at all entry points. Network-level protections such as web application firewalls can provide additional defense-in-depth measures, while regular security code reviews and penetration testing should be conducted to identify similar vulnerabilities within the application architecture. The implementation of least privilege database access controls and regular security updates for the gnews publisher software will further reduce the exploitation risk and maintain overall system security posture.