5 files changed, 29 insertions, 2 deletions
diff --git a/src/common/spawn.cpp b/src/common/spawn.cpp
index 59f11675c..0a2ce8387 100644
--- a/src/common/spawn.cpp
+++ b/src/common/spawn.cpp
@@ -38,6 +38,7 @@
 #endif
 
 #include "misc_log_ex.h"
+#include "util.h"
 #include "spawn.h"
 
 namespace tools
@@ -101,6 +102,8 @@ int spawn(const char *filename, const std::vector<std::string>& args, bool wait)
   // child
   if (pid == 0)
   {
+    tools::closefrom(3);
+    close(0);
     char *envp[] = {NULL};
     execve(filename, argv, envp);
     MERROR("Failed to execve: " << strerror(errno));
diff --git a/src/common/util.cpp b/src/common/util.cpp
index 2a1d49af0..f91230528 100644
--- a/src/common/util.cpp
+++ b/src/common/util.cpp
@@ -28,6 +28,7 @@
 // 
 // Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
 
+#include <unistd.h>
 #include <cstdio>
 
 #ifdef __GLIBC__
@@ -233,7 +234,7 @@ namespace tools
       MERROR("Failed to open " << filename << ": " << std::error_code(GetLastError(), std::system_category()));
     }
 #else
-    m_fd = open(filename.c_str(), O_RDONLY | O_CREAT, 0666);
+    m_fd = open(filename.c_str(), O_RDONLY | O_CREAT | O_CLOEXEC, 0666);
     if (m_fd != -1)
     {
       if (flock(m_fd, LOCK_EX | LOCK_NB) == -1)
@@ -967,4 +968,23 @@ std::string get_nix_version_display_string()
   }
 #endif
 
+  void closefrom(int fd)
+  {
+#if defined __FreeBSD__ || defined __OpenBSD__ || defined __NetBSD__ || defined __DragonFly__
+    ::closefrom(fd);
+#else
+#if defined __GLIBC__
+    const int sc_open_max =  sysconf(_SC_OPEN_MAX);
+    const int MAX_FDS = std::min(65536, sc_open_max);
+#else
+    const int MAX_FDS = 65536;
+#endif
+    while (fd < MAX_FDS)
+    {
+      close(fd);
+      ++fd;
+    }
+#endif
+  }
+
 }
diff --git a/src/common/util.h b/src/common/util.h
index ce773bd38..e793a42b5 100644
--- a/src/common/util.h
+++ b/src/common/util.h
@@ -238,4 +238,6 @@ namespace tools
 #ifdef _WIN32
   std::string input_line_win();
 #endif
+
+  void closefrom(int fd);
 }
diff --git a/src/cryptonote_core/tx_pool.cpp b/src/cryptonote_core/tx_pool.cpp
index 5a9fcf67e..553a22298 100644
--- a/src/cryptonote_core/tx_pool.cpp
+++ b/src/cryptonote_core/tx_pool.cpp
@@ -765,7 +765,7 @@ namespace cryptonote
     m_blockchain.for_all_txpool_txes([&tx_infos, key_image_infos, include_sensitive_data](const crypto::hash &txid, const txpool_tx_meta_t &meta, const cryptonote::blobdata *bd){
       tx_info txi;
       txi.id_hash = epee::string_tools::pod_to_hex(txid);
-      txi.tx_blob = epee::string_tools::buff_to_hex_nodelimer(*bd);
+      txi.tx_blob = *bd;
       transaction tx;
       if (!parse_and_validate_tx_from_blob(*bd, tx))
       {
diff --git a/src/rpc/core_rpc_server.cpp b/src/rpc/core_rpc_server.cpp
index d8f556d3e..263ddf1bc 100644
--- a/src/rpc/core_rpc_server.cpp
+++ b/src/rpc/core_rpc_server.cpp
@@ -924,6 +924,8 @@ namespace cryptonote
       return r;
 
     m_core.get_pool_transactions_and_spent_keys_info(res.transactions, res.spent_key_images, !request_has_rpc_origin || !m_restricted);
+    for (tx_info& txi : res.transactions)
+      txi.tx_blob = epee::string_tools::buff_to_hex_nodelimer(txi.tx_blob);
     res.status = CORE_RPC_STATUS_OK;
     return true;
   }