Spell duration incorrect...

Spell duration incorrect...

There is a spell which has an incorrect duration (about 51 times longer than it should be) and I am trying to do a quick-fix, but am not sure how to go about this. The spells are pulled from the DBC files, but how do we determine the duration? Currently spell 14792 applies to weapons for nine hours! It should be five minutes or 15 charges, whichever comes first. I dug around in SpellMgr.cpp a bit but did not see specific spell entries. Years back I seem to recall a "Spell.cpp" file, but it must have been removed.

So how should I go about correcting the number of charges and duration of this specific spell? If you want to see this bug, go to Un'Goro and melee a venomhide ravasaur. It should coat your weapon with a poison buff that has unlimited charges and lasts nine hours.