CVE-2018-1509 in Security Guardium EcoSystem
Summary
by MITRE
IBM Security Guardium EcoSystem 10.5 does not validate, or incorrectly validates, a certificate.This weakness might allow an attacker to spoof a trusted entity by using a man-in-the-middle (MITM) attack. The software might connect to a malicious host while believing it is a trusted host, or the software might be deceived into accepting spoofed data that appears to originate from a trusted host. IBM X-Force ID: 141417.
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Analysis
by VulDB Data Team • 05/19/2023
The vulnerability identified as CVE-2018-1509 affects IBM Security Guardium EcoSystem version 10.5, representing a critical flaw in the certificate validation mechanism that undermines the security posture of the system. This weakness falls under the category of improper certificate validation as classified by CWE-295, which specifically addresses the failure to properly validate X.509 certificates during SSL/TLS connections. The vulnerability stems from the software's inadequate verification of digital certificates presented during secure communications, creating a pathway for malicious actors to exploit the trust relationship between systems.
The technical implementation of this flaw allows attackers to perform man-in-the-middle attacks by presenting fraudulent certificates that the system accepts as legitimate. When the Guardium EcoSystem attempts to establish secure connections with other systems, it fails to properly validate the certificate chain or verify the certificate's authenticity against trusted authorities. This improper validation can occur through multiple vectors including accepting self-signed certificates without proper verification, failing to check certificate expiration dates, or not validating the certificate's intended purpose and subject alternative names. The vulnerability specifically impacts the cryptographic validation processes that should ensure secure communication channels remain intact.
The operational impact of this vulnerability extends beyond simple data interception, as it fundamentally compromises the trust model that security systems rely upon for protecting sensitive information. Attackers can exploit this weakness to establish unauthorized communication channels with the Guardium system, potentially gaining access to sensitive security data, intercepting communications between security components, or even manipulating security policies and configurations. The implications are particularly severe given that Guardium is designed to protect and monitor security data, making it a prime target for attackers seeking to undermine security operations. This vulnerability directly relates to the MITRE ATT&CK framework's technique T1046, which involves network service scanning and T1566, which involves credential access through social engineering, as the compromised trust relationship enables further exploitation.
Organizations utilizing IBM Security Guardium EcoSystem 10.5 should implement immediate mitigations including applying the vendor-provided security patches, configuring explicit certificate validation policies, and implementing additional network monitoring to detect potential MITM activities. The recommended approach involves enforcing strict certificate validation procedures, including certificate pinning where appropriate, and ensuring that all system components maintain updated certificate stores with trusted root authorities. Security teams should also consider implementing network segmentation to limit the potential impact of certificate validation failures and establish continuous monitoring for unauthorized certificate installations or connection attempts to suspicious endpoints. The vulnerability demonstrates the critical importance of maintaining robust certificate validation mechanisms as outlined in industry standards such as NIST SP 800-57 and ISO/IEC 27001, which emphasize the need for proper cryptographic key management and certificate validation processes.