Added size check for arcadyan decryptor

d-c-d · Aug 11, 2020 · 5e0d7cf · 5e0d7cf
1 parent c58d9e1
commit 5e0d7cf
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/src/binwalk/plugins/arcadyan.py b/src/binwalk/plugins/arcadyan.py
@@ -42,9 +42,12 @@ def extractor(self, fname):
         fname = os.path.abspath(fname)
 
         infile = binwalk.core.common.BlockFile(fname, "rb")
-        obfuscated = infile.read()
+        obfuscated = infile.read(self.MIN_FILE_SIZE)
         infile.close()
 
+        if os.path.getsize(fname) > self.MAX_IMAGE_SIZE:
+            raise Exception("Input file too large for Arcadyan obfuscated firmware")
+
         if len(obfuscated) >= self.MIN_FILE_SIZE:
             # Swap blocks 1 and 2
             p1 = obfuscated[self.P1_START:self.P1_END]