CVE-2020-4624 in Cloud Pak for Security
Summary
by MITRE • 11/30/2020
IBM Cloud Pak for Security 1.3.0.1 (CP4S) uses weaker than expected cryptographic algorithms during negotiation could allow an attacker to decrypt sensitive information.
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Analysis
by VulDB Data Team • 12/11/2020
IBM Cloud Pak for Security version 1.3.0.1 contains a cryptographic vulnerability that stems from the use of weaker than expected cryptographic algorithms during the negotiation process. This weakness creates an opportunity for attackers to potentially decrypt sensitive information that should remain protected. The vulnerability manifests when the system negotiates cryptographic parameters, where it fails to enforce strong cryptographic standards that would normally be expected in enterprise security environments. This flaw falls under the category of cryptographic weakness as defined by CWE-327, which specifically addresses the use of weak or broken cryptographic algorithms. The vulnerability is particularly concerning in the context of cloud security platforms where sensitive data protection is paramount. Attackers could exploit this weakness to intercept and decrypt communications between system components, potentially gaining access to confidential information such as user credentials, system configurations, or protected data streams.
The operational impact of this vulnerability extends beyond simple data exposure, as it undermines the fundamental security assurances that organizations rely upon when deploying cloud security solutions. In environments where IBM Cloud Pak for Security is used to protect critical infrastructure, this weakness could enable adversaries to perform man-in-the-middle attacks or session hijacking operations. The vulnerability's presence in version 1.3.0.1 suggests that the cryptographic negotiation process lacks proper validation of algorithm strength, allowing weaker ciphers or protocols to be accepted. This behavior aligns with ATT&CK technique T1566 which involves social engineering attacks, as attackers might leverage such cryptographic weaknesses to establish more persistent access. Organizations using this version may experience reduced confidence in their security posture, particularly when handling regulated data or sensitive communications that require strong encryption guarantees.
Mitigation strategies for this vulnerability should focus on immediate remediation through official IBM patches and updates. Organizations should prioritize upgrading to versions that address the cryptographic negotiation weaknesses, ensuring that all system components properly validate cryptographic algorithm strength during negotiation processes. Network segmentation and additional monitoring controls can provide temporary protection while awaiting official patches. Security teams should implement comprehensive audit procedures to identify any potential exploitation attempts and verify that cryptographic protocols are being properly enforced. The vulnerability demonstrates the critical importance of cryptographic algorithm validation in enterprise security systems, as defined by industry standards such as NIST SP 800-57 and FIPS 140-2. Organizations should also consider implementing additional layers of security such as network intrusion detection systems and enhanced logging of cryptographic events to detect potential exploitation attempts. Regular security assessments of cryptographic implementations should become standard practice to prevent similar weaknesses from emerging in future deployments.