An attacker with local access the to medical office computer can 
escalate his Windows user privileges to "NT AUTHORITY\SYSTEM" by 
exploiting a race condition in the Elefant Update Service during the 
repair or update process. When using the repair function, the service queries the server for a 
list of files and their hashes. In addition, instructions to execute 
binaries to finalize the repair process are included. The executables are executed as "NT AUTHORITY\SYSTEM" after they are 
copied over to the user writable installation folder (C:\Elefant1). This
 means that a user can overwrite either "PostESUUpdate.exe" or 
"Update_OpenJava.exe" in the time frame after the copy and before the 
execution of the final repair step. The overwritten executable is then executed as "NT AUTHORITY\SYSTEM".

SEC Consult Vulnerability Lab CWE-367

SEC Consult Vulnerability Lab https://hasomed.de/produkte/elefant/ [No types assigned]

SEC Consult Vulnerability Lab https://r.sec-consult.com/hasomed [No types assigned]