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  1. MariaDB Server
  2. MDEV-16810

AddressSanitizer: stack-buffer-overflow in int10_to_str

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      Description

      CREATE TABLE t1 (v2 varchar(35)) ENGINE=InnoDB;
      INSERT INTO t1 VALUES ('Rae Bareli');
       
      SELECT PERIOD_DIFF('2018-07-24', (AES_ENCRYPT(v2, v2))) FROM t1;
      

      =================================================================
      ==18339==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7feeddbeb6d4 at pc 0x5587b0e7ec11 bp 0x7feeddbeb590 sp 0x7feeddbeb580
      WRITE of size 1 at 0x7feeddbeb6d4 thread T27
          #0 0x5587b0e7ec10 in int10_to_str /git/10.3/strings/int2str.c:174
          #1 0x5587af1ba12b in Protocol_text::store_long(long long) /git/10.3/sql/protocol.cc:1171
          #2 0x5587af86dc2b in Type_handler::Item_send_long(Item*, Protocol*, st_value*) const /git/10.3/sql/sql_type.cc:5306
          #3 0x5587af874f75 in Type_handler_long::Item_send(Item*, Protocol*, st_value*) const (/git/10.3/sql/mysqld+0x147bf75)
          #4 0x5587af1c42bf in Item::send(Protocol*, st_value*) /git/10.3/sql/item.h:877
          #5 0x5587af1b7fe9 in Protocol::send_result_set_row(List<Item>*) /git/10.3/sql/protocol.cc:986
          #6 0x5587af321379 in select_send::send_data(List<Item>&) /git/10.3/sql/sql_class.cc:2932
          #7 0x5587af51eb50 in end_send /git/10.3/sql/sql_select.cc:20451
          #8 0x5587af51764b in evaluate_join_record /git/10.3/sql/sql_select.cc:19491
          #9 0x5587af51624f in sub_select(JOIN*, st_join_table*, bool) /git/10.3/sql/sql_select.cc:19271
          #10 0x5587af5146ee in do_select /git/10.3/sql/sql_select.cc:18811
          #11 0x5587af4b4016 in JOIN::exec_inner() /git/10.3/sql/sql_select.cc:4021
          #12 0x5587af4b1d5b in JOIN::exec() /git/10.3/sql/sql_select.cc:3815
          #13 0x5587af4b512d in mysql_select(THD*, TABLE_LIST*, unsigned int, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /git/10.3/sql/sql_select.cc:4220
          #14 0x5587af490972 in handle_select(THD*, LEX*, select_result*, unsigned long) /git/10.3/sql/sql_select.cc:382
          #15 0x5587af4164c3 in execute_sqlcom_select /git/10.3/sql/sql_parse.cc:6542
          #16 0x5587af404cd6 in mysql_execute_command(THD*) /git/10.3/sql/sql_parse.cc:3765
          #17 0x5587af41edd1 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /git/10.3/sql/sql_parse.cc:8073
          #18 0x5587af3f9ab8 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /git/10.3/sql/sql_parse.cc:1847
          #19 0x5587af3f6c50 in do_command(THD*) /git/10.3/sql/sql_parse.cc:1392
          #20 0x5587af7460b5 in do_handle_one_connection(CONNECT*) /git/10.3/sql/sql_connect.cc:1402
          #21 0x5587af745a92 in handle_one_connection /git/10.3/sql/sql_connect.cc:1308
          #22 0x5587b0c842e2 in pfs_spawn_thread /git/10.3/storage/perfschema/pfs.cc:1862
          #23 0x7feef6f296b9 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x76b9)
          #24 0x7feef63be41c in clone (/lib/x86_64-linux-gnu/libc.so.6+0x10741c)
       
      Address 0x7feeddbeb6d4 is located in stack of thread T27 at offset 52 in frame
          #0 0x5587af1b9d97 in Protocol_text::store_long(long long) /git/10.3/sql/protocol.cc:1162
       
        This frame has 1 object(s):
          [32, 52) 'buff' <== Memory access at offset 52 overflows this variable
      HINT: this may be a false positive if your program uses some custom stack unwind mechanism or swapcontext
            (longjmp and C++ exceptions *are* supported)
      Thread T27 created by T0 here:
          #0 0x7feef8687253 in pthread_create (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x36253)
          #1 0x5587b0c846cf in spawn_thread_v1 /git/10.3/storage/perfschema/pfs.cc:1912
          #2 0x5587af179a44 in inline_mysql_thread_create /git/10.3/include/mysql/psi/mysql_thread.h:1268
          #3 0x5587af18edc3 in create_thread_to_handle_connection(CONNECT*) /git/10.3/sql/mysqld.cc:6557
          #4 0x5587af18f4c3 in create_new_thread /git/10.3/sql/mysqld.cc:6627
          #5 0x5587af190500 in handle_connections_sockets() /git/10.3/sql/mysqld.cc:6902
          #6 0x5587af18e283 in mysqld_main(int, char**) /git/10.3/sql/mysqld.cc:6179
          #7 0x5587af17816f in main /git/10.3/sql/main.cc:25
          #8 0x7feef62d782f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
       
      SUMMARY: AddressSanitizer: stack-buffer-overflow /git/10.3/strings/int2str.c:174 int10_to_str
      Shadow bytes around the buggy address:
        0x0ffe5bb75680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        0x0ffe5bb75690: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        0x0ffe5bb756a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        0x0ffe5bb756b0: 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1 00 00
        0x0ffe5bb756c0: 00 00 00 00 00 00 01 f4 f4 f4 f3 f3 f3 f3 00 00
      =>0x0ffe5bb756d0: 00 00 00 00 f1 f1 f1 f1 00 00[04]f4 f3 f3 f3 f3
        0x0ffe5bb756e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        0x0ffe5bb756f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
        0x0ffe5bb75700: f1 f1 f1 f1 00 00 00 00 f2 f2 f2 f2 00 00 00 00
        0x0ffe5bb75710: f2 f2 f2 f2 00 00 00 00 00 00 00 00 00 00 00 00
        0x0ffe5bb75720: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      Shadow byte legend (one shadow byte represents 8 application bytes):
        Addressable:           00
        Partially addressable: 01 02 03 04 05 06 07 
        Heap left redzone:       fa
        Heap right redzone:      fb
        Freed heap region:       fd
        Stack left redzone:      f1
        Stack mid redzone:       f2
        Stack right redzone:     f3
        Stack partial redzone:   f4
        Stack after return:      f5
        Stack use after scope:   f8
        Global redzone:          f9
        Global init order:       f6
        Poisoned by user:        f7
        Container overflow:      fc
        Array cookie:            ac
        Intra object redzone:    bb
        ASan internal:           fe
      ==18339==ABORTING
      ----------SERVER LOG END-------------
      

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            • Assignee:
              serg Sergei Golubchik
              Reporter:
              alice Alice Sherepa
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              • Created:
                Updated:
                Resolved: