CVE-2012-6071 in nuSOAP
Summary
by MITRE
nuSOAP before 0.7.3-5 does not properly check the hostname of a cert.
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Analysis
by VulDB Data Team • 02/23/2024
The vulnerability identified as CVE-2012-6071 affects nuSOAP versions prior to 0.7.3-5 and represents a significant security flaw in SSL/TLS certificate validation mechanisms. This issue resides in the web services client library that handles SOAP communications, where the software fails to properly validate the hostname contained within SSL certificates during secure connections. The vulnerability stems from inadequate certificate hostname verification, which allows for potential man-in-the-middle attacks and unauthorized access to web services that rely on nuSOAP for communication. This weakness specifically impacts systems that utilize nuSOAP to establish secure connections to remote web services, particularly those employing HTTPS protocols for data transmission. The flaw demonstrates a failure in proper certificate pinning and hostname validation practices that are fundamental to secure communications.
The technical implementation of this vulnerability occurs within the SSL/TLS handshake process where nuSOAP performs certificate validation. When establishing secure connections, the library should verify that the certificate's hostname matches the target server's domain name to prevent certificate spoofing attacks. However, nuSOAP before version 0.7.3-5 bypasses this critical validation step, allowing attackers to present certificates that do not match the expected hostname. This misconfiguration creates a pathway for attackers to intercept communications by presenting valid certificates for different hostnames, effectively enabling them to impersonate legitimate web services. The flaw aligns with CWE-295, which specifically addresses improper certificate validation, and represents a failure in certificate hostname validation that violates standard security practices for secure communications.
The operational impact of this vulnerability extends beyond simple data interception to encompass potential system compromise and data manipulation. Organizations relying on nuSOAP for web service communications face risks including unauthorized access to sensitive data, manipulation of service responses, and potential credential theft during secure transactions. Attackers can exploit this vulnerability to conduct successful man-in-the-middle attacks by presenting certificates for domains they control while maintaining the appearance of legitimate service endpoints. This capability undermines the trust model that secure communications rely upon and can lead to cascading security failures throughout systems that depend on the compromised web services. The vulnerability particularly affects environments where web services handle confidential information, financial transactions, or personal data, as the compromised connections can lead to significant data breaches and regulatory compliance violations.
Mitigation strategies for CVE-2012-6071 primarily focus on upgrading to nuSOAP version 0.7.3-5 or later, which includes proper hostname validation mechanisms. Organizations should conduct comprehensive inventory assessments to identify all systems utilizing affected nuSOAP versions and prioritize remediation efforts accordingly. Additional protective measures include implementing network monitoring to detect unusual certificate validation patterns, deploying certificate pinning mechanisms where possible, and establishing robust certificate management practices. Security teams should also consider implementing intrusion detection systems to monitor for potential man-in-the-middle attack indicators and establish incident response procedures for handling potential exploitation attempts. The vulnerability demonstrates the critical importance of proper certificate validation in secure communications and reinforces the need for regular security updates and patch management processes. Organizations should also review their web service security configurations to ensure compliance with industry standards such as those outlined in the OWASP Top Ten and NIST cybersecurity guidelines for secure web service implementations.