CVE Catalog

CVE-2017-9857

High
Published: Translated: NVD NIST

Summary

An issue was discovered in SMA Solar Technology products related to the SMAdata2+ communication protocol, which does not properly use authentication with encryption. It is vulnerable to man in the middle, packet injection, and replay attacks.

Risk Assessment

The organization may be exposed to unauthorized changes in settings and eavesdropping on communications, which can lead to serious consequences in managing energy systems.

Recommendation

It is recommended to implement encryption and appropriate authentication mechanisms to secure communication within the network. Additionally, network traffic should be monitored to detect potential attacks.

Related vulnerabilities

Original NVD description (English source)

An issue was discovered in SMA Solar Technology products. The SMAdata2+ communication protocol does not properly use authentication with encryption: it is vulnerable to man in the middle, packet injection, and replay attacks. Any setting change, authentication packet, scouting packet, etc. can be replayed, injected, or used for a man in the middle session. All functionalities available in Sunny Explorer can effectively be done from anywhere within the network as long as an attacker gets the packet setup correctly. This includes the authentication process for all (including hidden) access levels and the changing of settings in accordance with the gained access rights. Furthermore, because the SMAdata2+ communication channel is unencrypted, an attacker capable of understanding the protocol can eavesdrop on communications. NOTE: the vendor's position is that authentication with encryption is not required on an isolated subnetwork. Also, only Sunny Boy TLST-21 and TL-21 and Sunny Tripower

Vulnerability data from NVD (NIST) · CISA KEV · EPSS