Weak Password Generation in XWEB EVO Allows Unauthorized Access

Executive Summary

XWEB EVO 4.3.0 through 5.8.8 has a weak password generation flaw where the Administrator code-of-the-day password can be predicted using only the device's MAC address and date. The password generator is embedded in the firmware binary xwpasswd, allowing attackers to compute valid credentials offline without needing a server secret.

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Detection Guidance

To detect this vulnerability, inspect network traffic for unauthorized access attempts to XWEB EVO devices. Check device logs for repeated failed login attempts or unexpected Administrator access. Analyze firmware files for the presence of xwpasswd binary and verify if passwords can be generated offline using MAC address and date.

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Impact Analysis

Attackers can exploit this to gain unauthorized access to the device by predicting the Administrator password. This could allow full control over the system, potentially leading to data breaches, system manipulation, or disruption of operations.

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Compliance Impact

This vulnerability could lead to unauthorized access, potentially violating data protection requirements under GDPR and HIPAA. Organizations using affected systems may face compliance failures due to insufficient access controls and weak authentication mechanisms.

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Mitigation Strategies

Immediately isolate affected XWEB EVO devices from the network. Disable remote access if possible. Replace the device or upgrade to a supported version if available. Monitor for unauthorized access and change all credentials if compromise is suspected.

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