NULL Pointer Dereference In md5.c

[Aurorainfinity]

Crash sample

PDF: 1.5
R: 7
V: 2
P: -4
L: 128
MetaData: 1
FileID(16): 40 45 164 14 12 208 211 176 75 95 181 243 43 87 176 235
Filter(8tandard
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U: 183 202 255 185 154 118 28 228 136 106 178 230 238 94 29 35 40 191 78 94 78 117 138 65 100 0 78 86 255 250 1 8
User: 1
UserPw: 0
Permutate: 0

PM: 2
MaxPWL: 5
Charset(14): 32332fffsfsrfe
 12 9 1 7 1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1

downloadLink: null.sav

Crash State

We See it executes at 0x0

Reasons

Where md5_50_init will not be executed，So md5_50_variant is NULL

Which ends with a NULL Pointer Dereference ...