Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-10361

auth_pam + RSA SecurID PAM module + SQLyog causes server crash

    Details

      Description

      A user saw the following server crash in auth_pam when connecting to MariaDB server using SQLyog, which is linked with MariaDB Connector/C:

      160711 14:39:55 [ERROR] mysqld got signal 11 ;
      This could be because you hit a bug. It is also possible that this binary
      or one of the libraries it was linked against is corrupt, improperly built,
      or misconfigured. This error can also be caused by malfunctioning hardware.
       
      To report this bug, see http://kb.askmonty.org/en/reporting-bugs
       
      We will try our best to scrape up some info that will hopefully help
      diagnose the problem, but since we have already crashed,
      something is definitely wrong and this may fail.
       
      Server version: 10.1.10-MariaDB-log
      key_buffer_size=134217728
      read_buffer_size=131072
      max_used_connections=6
      max_threads=502
      thread_count=5
      It is possible that mysqld could use up to
      key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 1233659 K bytes of memory
      Hope that's ok; if not, decrease some variables in the equation.
       
      Thread pointer: 0x0x7f6580f3d008
      Attempting backtrace. You can use the following information to find out
      where mysqld died. If you see no messages after this, something went
      terribly wrong...
      stack_bottom = 0x7f72ba5f4d30 thread_stack 0x48000
      mysys/stacktrace.c:247(my_print_stacktrace)[0x7f72c0a7536e]
      sql/signal_handler.cc:160(handle_fatal_signal)[0x7f72c05a36ad]
      /lib64/libpthread.so.0(+0xf100)[0x7f72bfbc5100]
      /usr/lib64/security/pam_securid.so(+0x12d83)[0x7f72ba41fd83]
      /usr/lib64/security/pam_securid.so(+0x13f24)[0x7f72ba420f24]
      /usr/lib64/security/pam_securid.so(+0x15160)[0x7f72ba422160]
      /usr/lib64/security/pam_securid.so(pam_sm_authenticate+0x3bd)[0x7f72ba421e46]
      /lib64/libpam.so.0(+0x2f6a)[0x7f72b0aadf6a]
      /lib64/libpam.so.0(pam_authenticate+0x30)[0x7f72b0aad830]
      /usr/lib64/mysql/plugin/auth_pam.so(+0xf1e)[0x7f72b0cbaf1e]
      sql/sql_acl.cc:12263(do_auth_once)[0x7f72c03b8341]
      sql/sql_acl.cc:12374(acl_authenticate(THD*, unsigned int))[0x7f72c03daf5d]
      sql/sql_connect.cc:1024(check_connection)[0x7f72c04f08df]
      sql/sql_connect.cc:1092(login_connection(THD*))[0x7f72c04f2275]
      sql/sql_connect.cc:1270(thd_prepare_connection(THD*))[0x7f72c04f2be9]
      sql/sql_connect.cc:1340(do_handle_one_connection(THD*))[0x7f72c04f2db0]
      sql/sql_connect.cc:1263(handle_one_connection)[0x7f72c04f2fb0]
      /lib64/libpthread.so.0(+0x7dc5)[0x7f72bfbbddc5]
      /lib64/libc.so.6(clone+0x6d)[0x7f72bdfdf28d]
       
      Trying to get some variables.
      Some pointers may be invalid and cause the dump to abort.
      Query (0x0): is an invalid pointer
      Connection ID (thread ID): 19
      Status: NOT_KILLED
       
      Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=on,mrr_cost_based=on,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on,table_elimination=on,extended_keys=on,exists_to_in=on
      

      RSA SecurID implements multi-factor authentication. The crash seems to occur when SQLyog attempts to automatically reconnect with the user's previously-entered PIN, which was only intended for 1 use.

      This might indicate a bug in the RSA SecurID PAM module. This one looks similar:

      https://www.redhat.com/archives/pam-list/2015-April/msg00003.html

        Attachments

          Issue Links

            Activity

              People

              • Assignee:
                georg Georg Richter
                Reporter:
                GeoffMontee Geoff Montee
              • Votes:
                4 Vote for this issue
                Watchers:
                9 Start watching this issue

                Dates

                • Created:
                  Updated:
                  Resolved: