CVE-2007-2994 in DGNews
Summary
by MITRE
SQL injection vulnerability in news.php in DGNews 2.1 allows remote attackers to execute arbitrary SQL commands via the newsid parameter in a fullnews action, a different vector than CVE-2007-0693.
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Analysis
by VulDB Data Team • 09/03/2018
The vulnerability identified as CVE-2007-2994 represents a critical SQL injection flaw within the DGNews 2.1 content management system that specifically targets the news.php script. This vulnerability operates through the newsid parameter when processing fullnews actions, creating an attack surface that differs significantly from the previously documented CVE-2007-0693, which indicates this represents a distinct exploitation vector. The flaw resides in the application's improper input validation mechanisms that fail to sanitize user-supplied data before incorporating it into SQL query constructions. This oversight allows malicious actors to manipulate the database query structure by injecting malicious SQL code through the newsid parameter, effectively bypassing normal authentication and authorization controls.
The technical implementation of this vulnerability stems from the application's direct concatenation of user input without appropriate sanitization or parameterization measures. When a user submits a newsid value through the fullnews action, the system processes this input without proper validation, enabling attackers to inject SQL commands that execute with the privileges of the database user account. This weakness aligns with CWE-89, which categorizes SQL injection vulnerabilities as a fundamental flaw in database query construction where untrusted data is incorporated into SQL commands without proper escaping or parameterization. The attack vector specifically exploits the lack of input filtering mechanisms that should validate or sanitize the newsid parameter before it reaches the database layer, creating a pathway for unauthorized data access, modification, or deletion.
The operational impact of this vulnerability extends beyond simple data theft, as it provides attackers with the capability to execute arbitrary SQL commands against the underlying database system. Successful exploitation could result in complete database compromise, allowing attackers to extract sensitive information, modify content, or even escalate privileges to gain administrative control over the affected system. The vulnerability affects the integrity and confidentiality of the news management system, potentially exposing all news articles, user information, and system configuration data. Organizations utilizing DGNews 2.1 are particularly vulnerable as this flaw enables remote code execution capabilities, making it a prime target for attackers seeking persistent access to web applications. The vulnerability's classification under the ATT&CK framework would fall under the T1190 technique for exploiting vulnerabilities in web applications, specifically targeting the database layer through SQL injection attacks.
Mitigation strategies for CVE-2007-2994 require immediate implementation of proper input validation and parameterized queries to prevent SQL injection attacks. Organizations should implement prepared statements or parameterized queries that separate SQL command structure from user input, ensuring that malicious code cannot be executed within database contexts. The system should enforce strict input validation on all user-supplied parameters, particularly the newsid field, by implementing whitelisting mechanisms or comprehensive sanitization routines. Additionally, database access controls should be reviewed to ensure that the web application connects using accounts with minimal required privileges, reducing the potential impact of successful exploitation. Network-level protections such as web application firewalls should be deployed to detect and block suspicious SQL injection patterns, while regular security audits and code reviews should be conducted to identify similar vulnerabilities in other application components. The remediation process must include updating to patched versions of DGNews 2.1 or implementing compensating controls that address the root cause of the vulnerability through proper input handling and database query construction practices.