Horizon Alert
Summary of the vulnerability and why it matters
This vulnerability involves the EVbee Service Android app, which does not properly validate server certificates, potentially allowing network attackers to intercept and read communication, including access codes for charging stations. The encryption used is also weak and uses a hardcoded key.
- App communication can be intercepted and read.
- Critical charging station access codes are exposed.
- Confirm relevance and exposure to EVbee Service users.
Attack Path
How an attacker could exploit the issue
An attacker on the same network as the EVbee Service Android app could intercept communication by exploiting the app's failure to validate the server's certificate. This would allow them to read and modify the traffic, potentially gaining access to sensitive information like charging station access codes. The communication is further weakened by weak encryption with a hardcoded key, making it easier for an attacker to compromise the data.
- Attacker must be on the app's network.
- App fails to validate server's certificate.
- Compromise of charging station access codes.
Live Threat
Current exploitation, exposure, and threat context
The EVbee Service Android app could allow an attacker on the network path to intercept and manipulate communications with the server. When supported by the advisory, this manipulation could grant access to charging station access codes, as the traffic is weakly encrypted.
- Charging station access codes.
- Attacker intercepts network traffic.
- Unauthorized access to charging stations.
Operational Fix
Recommended remediation, mitigation, and detection steps
The EVbee Service Android app's handling of TLS certificates and weak encryption with RC4 and a hardcoded key creates a significant risk for attackers to intercept and manipulate communication, potentially gaining access to charging station codes. Real-world responsibility likely falls to the teams managing the mobile application, the backend infrastructure supporting it, and potentially vendor management if EVbee is a third-party service. The first practical step involves identifying all instances of the affected app, assessing their reachability and criticality to business operations, and then locating the accountable owner to plan remediation based on the identified risk.
- Application and platform teams should own the issue.
- Verify app reachability and business criticality first.
- Plan remediation based on identified risk.
