Horizon Alert
Summary of the vulnerability and why it matters
A buffer size calculation error in the web service of the Delta Electronics AS320T can be exploited remotely. This issue allows for the potential compromise of the device's integrity and availability.
- Can impact industrial control systems.
- Requires no user interaction.
- Network-accessible vulnerability.
Attack Path
How an attacker could exploit the issue
An attacker can exploit this by sending specially crafted GET or PUT requests to the AS320T's web service. This could lead to a stack buffer overflow, potentially allowing for arbitrary code execution or denial of service on the device.
- Network access required.
- Vulnerable web service handler.
- Unauthenticated requests are sufficient.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability exists in an industrial automation controller's web service, which is usually isolated within a local network. Attackers are less likely to target this specific vulnerability unless they have already compromised the internal network.
- Exploitation requires network access.
- No public exploit details observed.
- Recency signal is weak.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
Given the critical severity and network accessibility of this vulnerability, prioritize isolating affected Delta Electronics AS320T devices immediately if they are exposed. Investigate logs for any signs of unauthorized access or exploitation attempts related to the web service's GET/PUT request handler.
- Isolate affected AS320T devices.
- Monitor network traffic for suspicious requests.
- Apply firmware update 1.16 or later when available.
