Model: GT-I9505 (4.3)
CSC: OXAEMI8 (8 codes)
Kernel: 3.4.0-1715731 (20.09)
Device Status - CUSTOM
KNOX WARRANTY VOID - 0x1
Build Date: 20.09.2013
[ROM]><I9505 XXUEMI8><[JB 4.3]><Pre-Rooted STOCK ROM's><Odin/CWM><Odex/DeOdex> - xda-developers
I've not read anything further but going by the bit I've copied then it doesn't have the bootloader so should be Knox safe?
Edit: had a glance and several people who were on mga bootloader have issues with Wi-Fi etc while those who have been on newer locked bootloader have been fine!