CVE-2020-25152 in SpaceCom
Summary
by MITRE • 04/15/2022
A session fixation vulnerability in the B. Braun Melsungen AG SpaceCom administrative interface Version L81/U61 and earlier, and the Data module compactplus Versions A10 and A11 allows remote attackers to hijack web sessions and escalate privileges.
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Analysis
by VulDB Data Team • 04/20/2022
The vulnerability identified as CVE-2020-25152 represents a critical session fixation flaw within the B. Braun Melsungen AG SpaceCom administrative interface and Data module compactplus systems. This security weakness affects versions L81/U61 and earlier of the SpaceCom administrative interface, as well as Versions A10 and A11 of the Data module compactplus. The flaw enables remote attackers to exploit web session management mechanisms and gain unauthorized access to administrative functions. Session fixation vulnerabilities occur when an application fails to properly invalidate or regenerate session identifiers upon successful authentication, creating opportunities for attackers to maintain persistent access to systems.
The technical implementation of this vulnerability stems from improper session handling within the web application's authentication flow. When users authenticate to the SpaceCom administrative interface or Data module compactplus, the system does not adequately invalidate existing session tokens or generate new secure session identifiers. This allows an attacker who has obtained a valid session token to reuse that same token to impersonate legitimate users. The flaw specifically impacts the administrative interface components where sensitive operations are performed, making the vulnerability particularly dangerous for healthcare and medical device environments where system integrity is paramount. The issue manifests through the web application's session management logic that fails to properly enforce session isolation and authentication state transitions.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it enables privilege escalation and persistent system compromise. Attackers can leverage the session fixation flaw to maintain long-term access to medical device management interfaces, potentially gaining control over critical healthcare equipment and patient data systems. In healthcare environments, this vulnerability poses significant risks to patient safety and data confidentiality, as unauthorized individuals could manipulate medical device configurations, access sensitive patient information, or disrupt critical medical workflows. The remote exploitation capability means attackers do not require physical access to the systems, making the vulnerability particularly concerning for network-connected medical devices that are often deployed in sensitive environments.
Mitigation strategies for CVE-2020-25152 must address the core session management deficiencies within the affected B. Braun systems. Organizations should immediately implement proper session invalidation procedures upon successful authentication, ensuring that session tokens are regenerated and invalidated when users transition from anonymous to authenticated states. The implementation should follow established security frameworks such as those outlined in the OWASP Session Management Cheat Sheet and adhere to NIST SP 800-116 guidelines for secure session handling. Additionally, network segmentation and access controls should be implemented to limit exposure of administrative interfaces to authorized users only. System administrators should also consider implementing multi-factor authentication mechanisms and regular security assessments to identify similar vulnerabilities in medical device management systems. The vulnerability aligns with CWE-384, which specifically addresses session fixation issues in web applications, and represents a clear violation of ATT&CK technique T1548.003 for privilege escalation through session management weaknesses. Organizations should prioritize patching affected systems and implementing robust session management protocols to prevent unauthorized access to critical medical device infrastructure.