CVE-2003-1229 in JRE
Summary
by MITRE
X509TrustManager in (1) Java Secure Socket Extension (JSSE) in SDK and JRE 1.4.0 through 1.4.0_01, (2) JSSE before 1.0.3, (3) Java Plug-in SDK and JRE 1.3.0 through 1.4.1, and (4) Java Web Start 1.0 through 1.2 incorrectly calls the isClientTrusted method when determining server trust, which results in improper validation of digital certificate and allows remote attackers to (1) falsely authenticate peers for SSL or (2) incorrectly validate signed JAR files.
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Analysis
by VulDB Data Team • 07/04/2017
The vulnerability described in CVE-2003-1229 represents a critical flaw in the Java Secure Socket Extension implementation that fundamentally undermines the security of SSL/TLS communications and code signing validation. This issue affects multiple Java runtime environments including SDK and JRE versions 1.4.0 through 1.4.0_01, JSSE versions before 1.0.3, Java Plug-in SDK and JRE 1.3.0 through 1.4.1, and Java Web Start 1.0 through 1.2. The flaw resides in the X509TrustManager interface implementation where the system incorrectly invokes the isClientTrusted method during server trust validation processes. This misconfiguration creates a fundamental security gap that allows attackers to bypass proper certificate validation mechanisms.
The technical implementation error stems from a reversal of trust validation logic within the SSL/TLS handshake process and JAR file signature verification. When establishing secure connections, the Java runtime should validate server certificates using the isServerTrusted method to ensure proper authentication. However, the vulnerable implementation incorrectly calls isClientTrusted instead, which was designed for validating client certificates rather than server certificates. This methodological error creates a scenario where attackers can present invalid or self-signed certificates that appear legitimate to the system, enabling man-in-the-middle attacks. The flaw also impacts JAR file validation, where the system incorrectly validates signed archives by using client trust validation logic instead of proper server certificate validation procedures.
The operational impact of this vulnerability is severe and multifaceted, creating opportunities for various attack vectors that can compromise the integrity of secure communications and code execution. Remote attackers can exploit this vulnerability to perform SSL/TLS man-in-the-middle attacks by presenting forged certificates that bypass the trust validation process, allowing them to intercept and potentially modify communications between clients and servers. Additionally, the improper validation of signed JAR files creates opportunities for code injection attacks where malicious code can be executed with the privileges of legitimate signed applications. This vulnerability directly violates the principle of least privilege and undermines the trust model that secure Java applications depend upon for their security posture.
The vulnerability maps to CWE-295 which specifically addresses "Improper Certificate Validation" and aligns with ATT&CK technique T1071.004 for application layer protocol tunneling. The improper implementation of certificate validation creates a persistent security weakness that affects all applications relying on Java's SSL/TLS stack for secure communications. Organizations running affected Java versions face significant risks including data interception, unauthorized access to sensitive systems, and potential compromise of entire application ecosystems that depend on proper certificate validation. The attack surface extends beyond simple network communications to include code execution vulnerabilities in web applications and desktop applications that utilize Java Web Start or Java Plug-in components. This vulnerability demonstrates the critical importance of proper cryptographic implementation and the potential for subtle logic errors to create fundamental security weaknesses in widely deployed security infrastructure components.
Mitigation strategies should focus on immediate patching of affected Java versions to the latest security releases, implementing network monitoring to detect potential man-in-the-middle attacks, and establishing alternative authentication mechanisms for critical systems. Organizations should also conduct comprehensive vulnerability assessments to identify applications that may be affected by this issue and implement additional security controls such as certificate pinning, network segmentation, and enhanced logging to detect unauthorized certificate validation bypass attempts. The vulnerability underscores the necessity of thorough security testing of cryptographic implementations and proper validation of security-critical code paths in enterprise software distributions.