------------------------------------------------------------------------ Code execution in Kaseya VSA ------------------------------------------------------------------------ Kin Hung Cheng, Robert Hartshorn, May 2017 ------------------------------------------------------------------------ Abstract ------------------------------------------------------------------------ A security vulnerability was found in Kaseya VSA file upload file functionality. Using this vulnerability an authenticated user in a Kaseya VSA environment is able to upload arbitrary files onto the server. This functionality can lead to remote code execution with an asp shell. ------------------------------------------------------------------------ Tested versions ------------------------------------------------------------------------ This issue was successfully tested on version 9.2 ------------------------------------------------------------------------ Fix ------------------------------------------------------------------------ Patch to the latest version of VSA. ------------------------------------------------------------------------ Details ------------------------------------------------------------------------ https://www.securify.nl/advisory/SFY20170503/code-execution-in-kaseya-vsa.html