Merge pull request from GHSA-f9p9-v8rm-4482

Fix sudt erc20 proxy delegatecall bug
godwokenrises · Jun 7, 2022 · 2767d2e · 2767d2e
2 parents a5dec04 + 8b33be3
commit 2767d2e
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Showing 10 changed files with 266 additions and 2 deletions.
diff --git a/c/contracts.h b/c/contracts.h
@@ -43,6 +43,7 @@ typedef int (*precompiled_contract_gas_fn)(const uint8_t* input_src,
 typedef int (*precompiled_contract_fn)(gw_context_t* ctx,
                                        const uint8_t* code_data,
                                        const size_t code_size,
+                                       const enum evmc_call_kind parent_kind,
                                        bool is_static_call,
                                        const uint8_t* input_src,
                                        const size_t input_size,
@@ -72,6 +73,7 @@ int ecrecover_required_gas(const uint8_t* input, const size_t input_size,
 int ecrecover(gw_context_t* ctx,
               const uint8_t* code_data,
               const size_t code_size,
+              const enum evmc_call_kind parent_kind,
               bool is_static_call,
               const uint8_t* input_src,
               const size_t input_size, uint8_t** output, size_t* output_size) {
@@ -151,6 +153,7 @@ int sha256hash_required_gas(const uint8_t* input, const size_t input_size,
 int sha256hash(gw_context_t* ctx,
                const uint8_t* code_data,
                const size_t code_size,
+               const enum evmc_call_kind parent_kind,
                bool is_static_call,
                const uint8_t* input_src,
                const size_t input_size, uint8_t** output, size_t* output_size) {
@@ -176,6 +179,7 @@ int ripemd160hash_required_gas(const uint8_t* input, const size_t input_size,
 int ripemd160hash(gw_context_t* ctx,
                   const uint8_t* code_data,
                   const size_t code_size,
+                  const enum evmc_call_kind parent_kind,
                   bool is_static_call,
                   const uint8_t* input_src,
                   const size_t input_size, uint8_t** output,
@@ -204,6 +208,7 @@ int data_copy_required_gas(const uint8_t* input, const size_t input_size,
 int data_copy(gw_context_t* ctx,
               const uint8_t* code_data,
               const size_t code_size,
+              const enum evmc_call_kind parent_kind,
               bool is_static_call,
               const uint8_t* input_src,
               const size_t input_size, uint8_t** output, size_t* output_size) {
@@ -404,6 +409,7 @@ int big_mod_exp_required_gas(const uint8_t* input, const size_t input_size,
 int big_mod_exp(gw_context_t* ctx,
                 const uint8_t* code_data,
                 const size_t code_size,
+                const enum evmc_call_kind parent_kind,
                 bool is_static_call,
                 const uint8_t* input_src,
                 const size_t input_size, uint8_t** output,
@@ -699,6 +705,7 @@ void f_generic(uint64_t h[8], uint64_t m[16], uint64_t c0, uint64_t c1,
 int blake2f(gw_context_t* ctx,
             const uint8_t* code_data,
             const size_t code_size,
+            const enum evmc_call_kind parent_kind,
             bool is_static_call,
             const uint8_t* input_src,
             const size_t input_size, uint8_t** output, size_t* output_size) {
@@ -777,6 +784,7 @@ int bn256_add_istanbul_gas(const uint8_t* input_src,
 int bn256_add_istanbul(gw_context_t* ctx,
                        const uint8_t* code_data,
                        const size_t code_size,
+                       const enum evmc_call_kind parent_kind,
                        bool is_static_call,
                        const uint8_t* input_src,
                        const size_t input_size,
@@ -825,6 +833,7 @@ int bn256_scalar_mul_istanbul_gas(const uint8_t* input_src,
 int bn256_scalar_mul_istanbul(gw_context_t* ctx,
                               const uint8_t* code_data,
                               const size_t code_size,
+                              const enum evmc_call_kind parent_kind,
                               bool is_static_call,
                               const uint8_t* input_src,
                               const size_t input_size,
@@ -866,6 +875,7 @@ int bn256_pairing_istanbul_gas(const uint8_t* input_src,
 int bn256_pairing_istanbul(gw_context_t* ctx,
                            const uint8_t* code_data,
                            const size_t code_size,
+                           const enum evmc_call_kind parent_kind,
                            bool is_static_call,
                            const uint8_t* input_src,
                            const size_t input_size,

diff --git a/c/other_contracts.h b/c/other_contracts.h
@@ -33,6 +33,7 @@ int recover_account_gas(const uint8_t* input_src,
 int recover_account(gw_context_t* ctx,
                     const uint8_t* code_data,
                     const size_t code_size,
+                    const enum evmc_call_kind parent_kind,
                     bool is_static_call,
                     const uint8_t* input_src,
                     const size_t input_size,
@@ -96,6 +97,7 @@ int eth_to_godwoken_addr_gas(const uint8_t* input_src,
 int eth_to_godwoken_addr(gw_context_t* ctx,
                          const uint8_t* code_data,
                          const size_t code_size,
+                         const enum evmc_call_kind parent_kind,
                          bool is_static_call,
                          const uint8_t* input_src,
                          const size_t input_size,

diff --git a/c/polyjuice.h b/c/polyjuice.h
@@ -106,9 +106,13 @@ struct evmc_host_context {
   gw_context_t* gw_ctx;
   const uint8_t* code_data;
   const size_t code_size;
+  // parent level call kind
+  enum evmc_call_kind kind;
   uint32_t from_id;
   uint32_t to_id;
+  // parent level sender
   evmc_address sender;
+  // parent level destination
   evmc_address destination;
   int error_code;
 };
@@ -599,6 +603,7 @@ struct evmc_result call(struct evmc_host_context* context,
     res.gas_left = msg->gas - (int64_t)gas_cost;
     ret = contract(gw_ctx,
                    context->code_data, context->code_size,
+                   context->kind,
                    msg->flags == EVMC_STATIC,
                    msg->input_data, msg->input_size,
                    (uint8_t**)&res.output_data, &res.output_size);
@@ -910,7 +915,7 @@ int execute_in_evmone(gw_context_t* ctx,
   int ret = 0;
   evmc_address sender = msg->sender;
   evmc_address destination = msg->destination;
-  struct evmc_host_context context {ctx, code_data, code_size, from_id, to_id, sender, destination, 0};
+  struct evmc_host_context context {ctx, code_data, code_size, msg->kind, from_id, to_id, sender, destination, 0};
   struct evmc_vm* vm = evmc_create_evmone();
   struct evmc_host_interface interface = {account_exists, get_storage,    set_storage,    get_balance,
                                           get_code_size,  get_code_hash,  copy_code,      selfdestruct,

diff --git a/c/sudt_contracts.h b/c/sudt_contracts.h
@@ -31,6 +31,7 @@ int balance_of_any_sudt_gas(const uint8_t* input_src,
 int balance_of_any_sudt(gw_context_t* ctx,
                         const uint8_t* code_data,
                         const size_t code_size,
+                        const enum evmc_call_kind parent_kind,
                         bool is_static_call,
                         const uint8_t* input_src,
                         const size_t input_size,
@@ -104,6 +105,7 @@ int transfer_to_any_sudt_gas(const uint8_t* input_src,
 int transfer_to_any_sudt(gw_context_t* ctx,
                          const uint8_t* code_data,
                          const size_t code_size,
+                         const enum evmc_call_kind parent_kind,
                          bool is_static_call,
                          const uint8_t* input_src,
                          const size_t input_size,
@@ -146,6 +148,10 @@ int transfer_to_any_sudt(gw_context_t* ctx,
     ckb_debug("static call to transfer to any sudt is forbidden");
     return ERROR_TRANSFER_TO_ANY_SUDT;
   }
+  if (parent_kind == EVMC_CALLCODE || parent_kind == EVMC_DELEGATECALL) {
+    ckb_debug("delegatecall/callcode to transfer to any sudt is forbidden");
+    return ERROR_TRANSFER_TO_ANY_SUDT;
+  }
   if (input_size != (32 + 32 + 32 + 32)) {
     return ERROR_TRANSFER_TO_ANY_SUDT;
   }

diff --git a/c/tests/test_contracts.c b/c/tests/test_contracts.c
@@ -68,7 +68,7 @@ int test_contract(const uint8_t n,
   ctx.sys_load_data = sys_load_data;
   ctx.sys_load = sys_load;
   ctx._internal_load_raw = _internal_load_raw;
-  ret = contract(&ctx, NULL, 0, true, input_src, input_size, &output, &output_size);
+  ret = contract(&ctx, NULL, 0, EVMC_CALL, true, input_src, input_size, &output, &output_size);
   if (ret != 0) {
     debug_print_int("run contract failed", ret);
     goto test_contract_cleanup;

diff --git a/polyjuice-tests/src/test_cases/evm-contracts/AttackSudtERC20Proxy.abi b/polyjuice-tests/src/test_cases/evm-contracts/AttackSudtERC20Proxy.abi
@@ -0,0 +1 @@
+[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"str","type":"string"},{"indexed":false,"internalType":"bool","name":"result","type":"bool"}],"name":"Log","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"str","type":"string"},{"indexed":false,"internalType":"uint256","name":"result","type":"uint256"}],"name":"Log2","type":"event"},{"inputs":[{"internalType":"address","name":"logicContractAddr","type":"address"},{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"attack1","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes","name":"b","type":"bytes"}],"name":"bytesToUint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"}],"name":"get_allowances","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"setAllowance","outputs":[],"stateMutability":"nonpayable","type":"function"}]
diff --git a/polyjuice-tests/src/test_cases/evm-contracts/AttackSudtERC20Proxy.bin b/polyjuice-tests/src/test_cases/evm-contracts/AttackSudtERC20Proxy.bin
@@ -0,0 +1 @@
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diff --git a/polyjuice-tests/src/test_cases/evm-contracts/AttackSudtERC20Proxy.sol b/polyjuice-tests/src/test_cases/evm-contracts/AttackSudtERC20Proxy.sol
@@ -0,0 +1,45 @@
+pragma solidity ^0.8.0;
+
+
+contract AttackContract {
+    mapping (address => mapping (address => uint256)) private _allowances;
+
+    uint256 private _totalSupply;
+    uint256 private _sudtId;
+
+    string private _name;
+    string private _symbol;
+    uint8 private _decimals;
+
+    event Log(string str, bool result);
+    event Log2(string str, uint256 result);
+
+    constructor(uint256 sudtId_) public {
+        _sudtId = sudtId_;
+    }
+    function attack1(address logicContractAddr,address from,address to ,uint256 amount) public returns(bool) {
+        bool r;
+        bytes memory s;
+        (r, s) = logicContractAddr.delegatecall(abi.encodeWithSignature("transferFrom(address,address,uint256)", from,to,amount));
+        emit Log("delegatecall return ", r);  // r为true或false
+        return r;
+        /* uint256 result = bytesToUint(s); */
+        /* emit Log2("return ", result); */
+    }
+
+    function setAllowance(address owner,address spender, uint256 amount) public {
+        _allowances[owner][spender] = amount;
+    }
+
+    function get_allowances(address from,address to) public view returns( uint256){
+        return _allowances[from][to];
+    }
+
+    function bytesToUint(bytes memory b) public pure returns (uint256){
+        uint256 number;
+        for(uint i= 0; i<b.length; i++){
+            number = number + uint8(b[i]) * (2**(8 * (b.length-(i+1))));
+        }
+        return  number;
+    }
+}
diff --git a/polyjuice-tests/src/test_cases/mod.rs b/polyjuice-tests/src/test_cases/mod.rs
@@ -27,3 +27,4 @@ pub(crate) mod rlp;
 //  Special pre-compiled contract to support transfer to any sudt
 pub(crate) mod invalid_sudt_erc20_proxy;
 pub(crate) mod sudt_erc20_proxy;
+pub(crate) mod sudt_erc20_proxy_attack_allowance;
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		[{"inputs":[],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"str","type":"string"},{"indexed":false,"internalType":"bool","name":"result","type":"bool"}],"name":"Log","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"string","name":"str","type":"string"},{"indexed":false,"internalType":"uint256","name":"result","type":"uint256"}],"name":"Log2","type":"event"},{"inputs":[{"internalType":"address","name":"logicContractAddr","type":"address"},{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"attack1","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes","name":"b","type":"bytes"}],"name":"bytesToUint","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"}],"name":"get_allowances","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"setAllowance","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
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