Executive Summary

This vulnerability exists in Beward Intercom software version 2.3.1 and earlier, where the application stores sensitive authentication credentials in an unencrypted binary database file named BEWARD.INTERCOM.FDB. A local attacker with access to the current user session can read this file and extract plain-text usernames and passwords. This allows the attacker to bypass authentication mechanisms and gain unauthorized access to IP cameras and door stations controlled by the software. [1, 2]

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Impact Analysis

If exploited, this vulnerability allows a local attacker to obtain plain-text credentials, enabling unauthorized access to IP cameras and door stations. This can lead to unauthorized surveillance, control over door access systems, and potential privilege escalation within the affected environment. [1, 2]

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Detection Guidance

This vulnerability can be detected by checking for the presence of the unencrypted database file named BEWARD.INTERCOM.FDB on the affected system. For BEWARD Intercom versions above 2.2.11, this file is located at C:\ProgramData\BEWARD\BEWARD Intercom\DB\BEWARD.INTERCOM.FDB; for older versions, it is in the user's local AppData directory. A local user with read access can attempt to extract plaintext credentials by searching for specific byte patterns within this file. Detection can involve using scripts or commands to read and analyze this file. For example, on Windows, you can use PowerShell commands to check for the file's existence and read its contents, or use a Python script (such as the provided beward_creds.py) to memory-map the file and extract credentials using regular expressions. [1, 2]

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Mitigation Strategies

Immediate mitigation steps include restricting local user access permissions to the BEWARD.INTERCOM.FDB file to prevent unauthorized reading of the unencrypted credentials. Ensure that only trusted administrators have read access to this file. Additionally, consider upgrading to a newer version of the software if available, or applying any vendor-provided patches or updates that address this vulnerability. If no patch is available, isolate affected systems to limit local access and monitor for unauthorized access attempts. [1, 2]

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Compliance Impact

The vulnerability allows local attackers to access plain-text authentication credentials stored in an unencrypted database file, which can lead to unauthorized access to IP cameras and door stations. This exposure of sensitive user credentials could result in non-compliance with data protection standards and regulations such as GDPR and HIPAA, which require proper protection of personal and sensitive information. However, the provided resources do not explicitly discuss the impact on compliance with these standards. [1, 2]

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