CVE-2005-4630 in ClientExec
Summary
by MITRE
SQL injection vulnerability in index.php in ClientExec 2.3 allows remote attackers to execute arbitrary SQL commands via the (1) billshowid, (2) billdetailid, (3) fuse, and (4) frmClientID parameters.
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Analysis
by VulDB Data Team • 08/31/2017
The vulnerability identified as CVE-2005-4630 represents a critical sql injection flaw within ClientExec 2.3's index.php script that exposes multiple parameter vectors to remote exploitation. This vulnerability falls under the common weakness enumeration CWE-89 which specifically addresses improper neutralization of special elements used in sql commands. The affected parameters billshowid, billdetailid, fuse, and frmClientID all accept user-supplied input without proper sanitization or validation, creating an attack surface where malicious actors can manipulate database queries through crafted input sequences.
The technical implementation of this vulnerability stems from the application's failure to properly escape or parameterize user input before incorporating it into sql execution statements. When these parameters are processed by the index.php script, the raw input values are directly concatenated into sql queries without adequate protection mechanisms such as prepared statements or proper input filtering. This design flaw allows attackers to inject malicious sql payloads that can manipulate the database structure, extract sensitive information, modify records, or even gain elevated privileges within the database system.
Operationally, this vulnerability presents significant risk to organizations using ClientExec 2.3 as it enables remote code execution through database manipulation capabilities. Attackers can leverage this flaw to bypass authentication mechanisms, extract customer billing information, modify financial records, or potentially escalate privileges to system-level access. The impact extends beyond simple data theft as the vulnerability can facilitate further attacks within the network infrastructure, particularly if the database server has elevated permissions or if the application's database contains additional sensitive information beyond billing records.
The exploitation of this vulnerability aligns with techniques documented in the attack pattern taxonomy where adversaries target web applications through sql injection vectors to achieve unauthorized access and data manipulation. Organizations should implement immediate mitigations including input validation, parameterized queries, and proper output encoding to prevent malicious input from being processed as sql commands. Additionally, network segmentation and database access controls should be reviewed to limit potential damage from successful exploitation attempts. The vulnerability demonstrates the critical importance of proper input sanitization and secure coding practices in preventing sql injection attacks that remain among the most prevalent and dangerous web application security threats.