Add SB Curated (copied from the smartbugs repository).

dataset/denial_of_service/send_loop.sol

@@ -0,0 +1,28 @@
+/*
+ * @source: https://consensys.github.io/smart-contract-best-practices/known_attacks/#dos-with-unexpected-revert
+ * @author: ConsenSys Diligence
+* @vulnerable_at_lines: 24
+ * Modified by Bernhard Mueller
+ */
+
+pragma solidity 0.4.24;
+
+contract Refunder {
+    
+address[] private refundAddresses;
+mapping (address => uint) public refunds;
+
+    constructor() {
+        refundAddresses.push(0x79B483371E87d664cd39491b5F06250165e4b184);
+        refundAddresses.push(0x79B483371E87d664cd39491b5F06250165e4b185);
+    }
+
+    // bad
+    function refundAll() public {
+        for(uint x; x < refundAddresses.length; x++) { // arbitrary length iteration based on how many addresses participated
+        // <yes> <report> DENIAL_OF_SERVICE
+            require(refundAddresses[x].send(refunds[refundAddresses[x]])); // doubly bad, now a single failure on send will hold up all funds
+        }
+    }
+
+}