CVE-2015-4954 in BigFix Remote Control
Summary
by MITRE
IBM BigFix Remote Control before Interim Fix pack 9.1.2-TIV-IBRC912-IF0001 improperly allows self-signed certificates, which might allow remote attackers to conduct spoofing attacks via unspecified vectors. IBM X-Force ID: 105200.
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Analysis
by VulDB Data Team • 02/06/2021
The vulnerability identified as CVE-2015-4954 affects IBM BigFix Remote Control versions prior to Interim Fix pack 9.1.2-TIV-IBRC912-IF0001, representing a significant security weakness in certificate validation mechanisms. This flaw allows the system to accept self-signed certificates without proper verification, creating an avenue for malicious actors to exploit the trust relationship between clients and servers. The vulnerability stems from insufficient certificate validation logic that fails to properly authenticate the identity of certificate authorities, thereby undermining the fundamental security model of secure remote access solutions. Such a weakness directly impacts the integrity of the authentication process and can lead to unauthorized access to remote systems.
The technical implementation of this vulnerability lies in the certificate validation process where IBM BigFix Remote Control does not adequately enforce certificate chain validation or proper certificate authority verification. When self-signed certificates are accepted without proper scrutiny, attackers can generate fraudulent certificates that appear legitimate to the system. This behavior creates a man-in-the-middle attack vector where malicious actors can intercept communications between remote control clients and servers, potentially gaining unauthorized access to sensitive systems. The unspecified attack vectors mentioned in the vulnerability description suggest that multiple pathways exist for exploitation, including potential credential theft, session hijacking, and unauthorized system access. This weakness aligns with CWE-295, which addresses improper certificate validation, and represents a critical failure in the secure communication protocols that should be enforced in remote access solutions.
The operational impact of this vulnerability extends beyond simple authentication bypasses, as it fundamentally compromises the security posture of organizations relying on IBM BigFix Remote Control for system management. Attackers exploiting this vulnerability can conduct sophisticated spoofing attacks that may go undetected for extended periods, potentially leading to data breaches, system compromise, and unauthorized access to critical infrastructure. The remote nature of the attack means that threat actors do not require physical access to target systems, making the vulnerability particularly dangerous in enterprise environments where remote access is commonly used. Organizations may experience significant operational disruption as attackers leverage this weakness to establish persistent access to their systems, potentially leading to extended periods of unauthorized access and data exfiltration. The vulnerability also impacts compliance requirements for organizations that must maintain secure remote access capabilities while adhering to industry standards and regulatory frameworks.
Mitigation strategies for CVE-2015-4954 should prioritize immediate deployment of the recommended Interim Fix pack 9.1.2-TIV-IBRC912-IF0001, which addresses the certificate validation weakness by implementing proper certificate chain validation and authority verification. Organizations should also implement additional security controls including network segmentation to limit access to remote control systems, enhanced monitoring of authentication events, and regular certificate audits to ensure that only properly validated certificates are accepted. Security teams should consider implementing certificate pinning mechanisms where possible, and establish robust incident response procedures to detect and respond to potential exploitation attempts. The vulnerability demonstrates the importance of maintaining up-to-date security patches and implementing comprehensive certificate management policies as outlined in the ATT&CK framework's credential access and defense evasion techniques. Organizations should also conduct regular security assessments to identify similar weaknesses in other remote access solutions and ensure that their security posture remains resilient against evolving attack vectors.