CVE-2005-1639 in Sigma ISP Manager
Summary
by MITRE
SQL injection vulnerability in Sigmaweb.DLL in Sigma ISP Manager 6.6 allows remote attackers to execute arbitrary SQL commands via the (1) username, (2) password, or (3) domain fields.
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Analysis
by VulDB Data Team • 07/23/2017
The vulnerability identified as CVE-2005-1639 represents a critical SQL injection flaw within the Sigmaweb.DLL component of Sigma ISP Manager version 6.6. This security weakness exposes the system to remote exploitation where malicious actors can manipulate database queries through specifically crafted inputs. The vulnerability affects three primary input vectors including username, password, and domain fields, making it particularly dangerous as it can be exploited during authentication processes or when managing domain configurations. The flaw stems from inadequate input validation and sanitization within the application's database interaction layer, allowing attackers to inject malicious SQL code that executes with the privileges of the database user account.
This vulnerability directly maps to CWE-89 which classifies SQL injection as a weakness where untrusted data is incorporated into SQL commands without proper sanitization or parameterization. The attack surface is significantly expanded by the fact that the exploitation occurs during routine authentication and administrative operations, making it difficult to detect through normal monitoring procedures. The remote nature of the attack means that adversaries do not require physical access to the system or local network presence, enabling them to exploit the vulnerability from anywhere on the internet. The implications extend beyond simple data theft as attackers can potentially escalate privileges, modify database contents, or even gain complete control over the underlying database system.
The operational impact of this vulnerability is severe for organizations using Sigma ISP Manager 6.6 as it provides attackers with direct database access capabilities. Successful exploitation could lead to unauthorized access to customer information, modification of user accounts, data corruption, or complete database compromise. The authentication bypass potential through SQL injection means that attackers could gain administrative access to the ISP management system, potentially affecting multiple customer accounts and services. Additionally, the vulnerability could be leveraged as a stepping stone for further attacks within the network infrastructure, particularly if the database server hosts other critical applications or services. Organizations relying on this software for internet service provider management face significant risk of service disruption, data breaches, and regulatory compliance violations.
Mitigation strategies for CVE-2005-1639 should prioritize immediate patching of the Sigma ISP Manager software to the latest available version that addresses this vulnerability. Organizations should implement proper input validation and parameterized queries throughout their applications to prevent similar issues from occurring in other components. Network segmentation and access controls should be strengthened to limit exposure of vulnerable systems. The implementation of web application firewalls and database activity monitoring can provide additional layers of protection. Security teams should conduct thorough vulnerability assessments to identify other potential SQL injection vulnerabilities within their infrastructure. Regular security updates and penetration testing should be implemented as part of the overall security posture to prevent exploitation of similar weaknesses. The ATT&CK framework categorizes this vulnerability under the T1190 technique for exploitation of remote services, highlighting the importance of maintaining up-to-date security patches and implementing proper network defenses against such attacks.