Hitachi Energy Modular Advanced Control for HVDC (MACH)

The McFeeder server (distributed as part of SSW package), is susceptible to an arbitrary file write vulnerability on the MAIN computer system. This vulnerability stems from the use of an outdated version of a third-party library, which is used to extract archives uploaded to McFeeder server. An authenticated malicious client can exploit this vulnerability by uploading a crafted ZIP archive via the network to McFeeder’s service endpoint.

Authenticated clients can read arbitrary files on the MAIN Computer system using the remote procedure call (RPC) of the InspectSetup service endpoint. The low privilege client is then allowed to read arbitrary files that they do not have authorization to read.