IBM Common Licensing Agent HTTP Host Header Redirect Vulnerability

Executive Summary

IBM Common Licensing Agent versions 9.0, 9.0.0.1, 9.0.0.2, ART 9.0, ART 9.0.0.1, and ART 9.0.0.2 are vulnerable to a flaw where a remote attacker can manipulate the HTTP Host header to redirect users to an arbitrary domain. This occurs due to improper validation of the Host header.

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Detection Guidance

This vulnerability involves improper validation of the HTTP Host header in IBM Common Licensing Agent and ART. Detection requires checking network traffic for unusual Host header values or redirects to unexpected domains. Monitor HTTP requests for Host headers that do not match expected domains. Use tools like tcpdump or Wireshark to capture and inspect HTTP traffic for anomalies.

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Impact Analysis

This vulnerability could allow attackers to trick users into visiting malicious domains, potentially leading to phishing attacks, credential theft, or malware downloads. Users might unknowingly interact with harmful content if redirected.

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Compliance Impact

The vulnerability allows remote attackers to redirect users to arbitrary domains due to improper HTTP Host header validation. This could potentially lead to phishing attacks or unauthorized data exposure, which may impact compliance with GDPR (data protection) and HIPAA (healthcare data privacy) by enabling unauthorized access or data breaches.

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Mitigation Strategies

Update IBM Common Licensing Agent and ART to the latest patched versions to address improper HTTP Host header validation.

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