CVE-2018-1532 in API Connect
Summary
by MITRE
IBM API Connect 5.0.0.0 through 5.0.8.2 does not properly update the SESSIONID with each request, which could allow a user to obtain the ID in further attacks against the system. IBM X-Force ID: 142430.
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Analysis
by VulDB Data Team • 03/19/2023
The vulnerability identified as CVE-2018-1532 affects IBM API Connect versions 5.0.0.0 through 5.0.8.2, representing a significant session management flaw that undermines the security posture of the API gateway infrastructure. This weakness stems from the improper handling of SESSIONID values across consecutive requests, creating a persistent identifier that remains unchanged throughout a user's interaction with the system. The flaw allows an attacker to capture and subsequently reuse the session identifier, potentially enabling unauthorized access to protected resources and bypassing authentication mechanisms that rely on session integrity.
From a technical perspective, this vulnerability manifests as a failure in session token rotation, where the system fails to generate fresh SESSIONID values for each request within the same user session. The root cause aligns with CWE-613, which addresses insufficient session expiration, and CWE-384, which covers session fixation issues. When an attacker successfully captures a valid SESSIONID, they can leverage this identifier to impersonate legitimate users and potentially access sensitive API endpoints, user data, or administrative functions within the IBM API Connect environment. The vulnerability's impact extends beyond simple credential theft, as it can facilitate more sophisticated attacks including privilege escalation and data exfiltration.
The operational implications of this vulnerability are substantial for organizations relying on IBM API Connect for their API management and security infrastructure. Attackers can exploit this weakness to conduct session hijacking attacks, where captured session identifiers are used to gain unauthorized access to user accounts and their associated privileges. This vulnerability particularly threatens environments where API Connect serves as a gateway for enterprise applications, as it could allow attackers to bypass authentication controls and access protected business-critical APIs. The attack surface expands when considering that the SESSIONID may be transmitted in headers or cookies, making it susceptible to interception through man-in-the-middle attacks or cross-site scripting vulnerabilities.
Organizations should implement immediate mitigations including enforcing proper session token rotation mechanisms, implementing session timeout policies, and ensuring that SESSIONID values are regenerated with each authenticated request. The implementation of secure session management practices should align with NIST SP 800-116 guidelines for session management and adhere to the principle of least privilege. Additionally, organizations should conduct comprehensive security assessments of their API gateway configurations, monitor for unusual session activity patterns, and implement network-level protections such as intrusion detection systems to detect potential session hijacking attempts. The vulnerability also highlights the importance of regular security patching and vulnerability management processes, as IBM has likely released remediation updates for this specific issue. Organizations should also consider implementing additional authentication layers such as multi-factor authentication and API key management systems to reduce the attack surface and provide defense-in-depth against session-based attacks.