fix: remove Buffer constructor use for security reasons

Author: dkontorovskyy

.eslintrc.json

@@ -16,6 +16,7 @@
     "@typescript-eslint/await-thenable": "error",
     "@typescript-eslint/ban-ts-comment": "error",
     "@typescript-eslint/no-unnecessary-type-assertion": "error",
-    "@typescript-eslint/unbound-method": "error"
+    "@typescript-eslint/unbound-method": "error",
+    "node/prefer-global/buffer": "off"
   }
 }

src/scanner/images/credentials.ts

@@ -1,3 +1,4 @@
+import { Buffer } from 'buffer';
 import * as aws from 'aws-sdk';
 
 import { logger } from '../../common/logger';
@@ -47,7 +48,7 @@ function getEcrCredentials(region: string): Promise<string> {
         );
       }
 
-      const buff = new Buffer(authorizationTokenBase64, 'base64');
+      const buff = Buffer.from(authorizationTokenBase64, 'base64');
       const userColonPassword = buff.toString('utf-8');
       return resolve(userColonPassword);
     });