Players or mobs carrying or wearing items with these attributes will have the effects specified applied to themselves.

Name Description Default Base Min Max
generic.maxHealth The maximum health of this mob, determines the highest health they may be healed to. 20.0 0.0 1.7x10308
generic.knockbackResistance Resistance to knockback from attacks, explosions, and projectiles.
1.0 is full knockback resistance.
0.0 0.0 1.0
generic.movementSpeed Speed of movement in some unknown metric. The mob's maximum speed in blocks/second is a bit over 43 times this value, but can be affected by various conditions. 0.7 0.0 1.7x10308
generic.attackDamage Damage dealt by attacks, in half-hearts. 2.0 0.0 1.7x10308
generic.armor Armor defense points. 0.0 0.0 30.0
generic.armorToughness Armor Toughness. 0.0 0.0 20.0
Player Attributes
generic.attackSpeed Determines speed at which attack strength recharges. Value is the number of full-strength attacks per second. 4.0 0.0 1024.0
generic.luck Affects the results of loot tables using the quality or bonus_rolls tag (e.g. when opening chests or chest minecarts, fishing, and killing mobs). 0.0 -1024.0 1024.0

Incomplete list, copied from: Minecraft Wiki Attributes