October 1, 2019
Moxa EDR 810 Series is prone to following security vulnerabilities: 1. A remote-code execution vulnerability 2. An information disclosure vulnerability An attacker may leverage these issues to execute arbitrary code and gain access to sensitive information. This may lead to other attacks. The following Moxa products and versions are affected: Moxa EDR 810 Series 5.1 and prior
- Moxa EDR 810 Series 5.0
- Moxa EDR 810 Series 5.1
Block external access at the network boundary, unless external parties require service.
If global access isn't needed, filter access to the affected computer at the network boundary. Restricting access to only trusted computers and networks might greatly reduce the likelihood of successful exploits.
Run all software as a nonprivileged user with minimal access rights.
To reduce the impact of latent vulnerabilities, run all applications with the minimal amount of privileges required for functionality.
Deploy network intrusion detection systems to monitor network traffic for malicious activity.
Deploy NIDS to monitor network traffic for signs of anomalous or suspicious activity. This includes but is not limited to requests that include suspicious URI sequences.
Do not follow links provided by unknown or untrusted sources.
Web users should be cautious about following links to sites that are provided by unfamiliar or suspicious sources. Filtering HTML from emails may help remove a possible vector for transmitting malicious links to users.
Implement multiple redundant layers of security.
Since this issue may be leveraged to execute code, we recommend memory-protection schemes, such as nonexecutable stack/heap configurations and randomly mapped memory segments. This tactic may complicate exploit attempts of memory-corruption vulnerabilities.
Updates are available. Please see the references or vendor advisory for more information
Guillaume Lopes of Randorisec
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