CVE-2014-5075 in Smack Api
Summary
by MITRE
The Ignite Realtime Smack XMPP API 4.x before 4.0.2, and 3.x and 2.x when a custom SSLContext is used, does not verify that the server hostname matches a domain name in the subject s Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.
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Analysis
by VulDB Data Team • 12/15/2024
The vulnerability described in CVE-2014-5075 represents a critical flaw in the Ignite Realtime Smack XMPP API implementation that affects versions 4.x before 4.0.2 and older versions 3.x and 2.x when custom SSLContext is employed. This issue fundamentally compromises the security of SSL/TLS connections by failing to perform proper hostname verification during certificate validation. The flaw allows attackers to execute successful man-in-the-middle attacks by presenting arbitrary valid certificates that can bypass the standard certificate validation mechanisms. This vulnerability specifically targets the SSL/TLS certificate validation process where the system should verify that the server hostname matches either the Common Name field or the subjectAltName field within the X.509 certificate structure.
The technical implementation flaw stems from the absence of hostname verification in the SSL/TLS handshake process within the Smack XMPP library. When a custom SSLContext is used, the library fails to enforce the standard certificate validation procedures that should ensure the certificate presented by the server matches the expected hostname. This omission creates a security gap where any valid certificate, regardless of whether it was issued for the target server, can be accepted as legitimate. The vulnerability directly relates to CWE-295 which specifically addresses "Improper Certificate Validation" and represents a failure in the certificate validation process that should be mandated by industry security standards. The impact is particularly severe because XMPP protocol implementations often require secure communication channels for real-time messaging and presence information exchange, making this vulnerability especially dangerous in enterprise and collaborative environments.
The operational impact of this vulnerability extends beyond simple certificate validation failure to encompass complete trust model compromise within XMPP communications. Attackers can exploit this weakness to intercept, modify, or redirect XMPP traffic between clients and servers without detection, potentially gaining access to sensitive real-time communications, user credentials, and presence information. This vulnerability affects the fundamental security assurances that SSL/TLS protocols are designed to provide, undermining the integrity and confidentiality of all communications that rely on the Smack API for XMPP implementation. The attack vector is particularly concerning as it requires no special privileges or complex exploitation techniques - an attacker simply needs to present a valid certificate to establish a successful man-in-the-middle position.
Organizations using affected versions of the Smack XMPP API should immediately implement mitigations including upgrading to version 4.0.2 or later, which contains the necessary certificate validation fixes. Additionally, administrators should consider implementing additional network-level security controls such as certificate pinning, network segmentation, and monitoring for unusual certificate validation patterns. The vulnerability demonstrates the importance of following security best practices outlined in the OWASP Top Ten and NIST SP 800-57 guidelines for cryptographic key management and certificate validation. Implementing proper hostname verification in SSL/TLS implementations is a fundamental security requirement that aligns with the MITRE ATT&CK framework's defensive techniques for network security monitoring and certificate validation. Organizations should also conduct thorough security assessments of their XMPP-based applications to identify any additional vulnerabilities that may exist in their communication infrastructure and ensure comprehensive protection against similar certificate validation flaws.