Re: [SR-Users] kamailio 3.1.0 crash on ssl-dos attack

Hi All, Kamailio is resetting when we do TLS renegotiation dos attack using the tool available at http://www.thc.org/thc-ssl-dos/. Anybody looked at this issue? How we could resolve it. Any idea? The core generated for 3 pid's as below Pid 1: Core was generated by `/usr/sbin/kamailio -u swrun -g sw -m 120 -f /etc/kamailio/kamailio.cfg'. Program terminated with signal 11, Segmentation fault. #0 atomic_inc_int () at atomic/atomic_x86.h:225 (gdb) bt #0 atomic_inc_int () at atomic/atomic_x86.h:225 #1 cfg_update_local () at cfg/cfg_struct.h:228 #2 timer_main () at timer.c:994 #3 0x080b0579 in main_loop () at main.c:1632 #4 0x080b1be4 in main (argc=9, argv=0xbfd61e54) at main.c:2446 Pid 2: Core was generated by `/usr/sbin/kamailio -u swrun -g sw -m 120 -f /etc/kamailio/kamailio.cfg'. Program terminated with signal 11, Segmentation fault. #0 0x0819bfe8 in qm_insert_free (qm=0xaf6c5000, p=0xb05eec30, file=0xb6fb4140 "tls: tls_init.c", func=0xb6fb4ce0 "ser_free", line=296) at mem/q_malloc.c:184 184 if (frag->size <= f->size) break; (gdb) bt #0 0x0819bfe8 in qm_insert_free (qm=0xaf6c5000, p=0xb05eec30, file=0xb6fb4140 "tls: tls_init.c", func=0xb6fb4ce0 "ser_free", line=296) at mem/q_malloc.c:184 #1 qm_free (qm=0xaf6c5000, p=0xb05eec30, file=0xb6fb4140 "tls: tls_init.c", func=0xb6fb4ce0 "ser_free", line=296) at mem/q_malloc.c:518 #2 0xb6f95404 in ser_free (ptr=0xb05eec30) at tls_init.c:296 #3 0xb732e9ba in CRYPTO_free (str=0xb05eec30) at mem.c:391 #4 0xb7330bee in int_new_ex_data (class_index=5, obj=0xbfd414f4, ad=0xbfd41574) at ex_data.c:440 #5 0xb7330443 in CRYPTO_new_ex_data (class_index=5, obj=0xbfd414f4, ad=0xbfd41574) at ex_data.c:575 #6 0xb73dfde3 in X509_STORE_CTX_init (ctx=0xbfd414f4, store=0xafd8b3d0, x509=0xafe08ff0, chain=0x0) at x509_vfy.c:2114 #7 0xb74b0f31 in ssl3_output_cert_chain (s=0xb0553a10, x=0xafe08ff0) at s3_both.c:349 #8 0xb74a4728 in ssl3_send_server_certificate (s=0xb0553a10) at s3_srvr.c:3034 #9 0xb74a5879 in ssl3_accept (s=0xb0553a10) at s3_srvr.c:353 #10 0xb74afa8f in ssl3_read_bytes (s=0xb0553a10, type=23, buf=0xb0ad44ec "", len=4095, peek=0) at s3_pkt.c:1266 #11 0xb74ac9c9 in ssl3_read_internal (s=0xb0553a10, buf=0xb0ad44ec, len=4095, peek=0) at s3_lib.c:3265 #12 0xb74c24a9 in SSL_read (s=0xb0553a10, buf=0xb0ad44ec, num=4095) at ssl_lib.c:954 #13 0xb6fad1c3 in tls_read_f (c=0xb0ad431c, flags=0xbfd619c4) at tls_server.c:1058 #14 0x08171c0e in tcp_read_headers (c=0xb0ad431c, read_flags=0xbfd619c4) at tcp_read.c:406 #15 0x08171db8 in tcp_read_req (con=0xb0ad431c, bytes_read=0xbfd619cc, read_flags=0xbfd619c4) at tcp_read.c:885 #16 0x08172f67 in handle_io (fm=<value optimized out>, events=1, idx=<value optimized out>) at tcp_read.c:1234 #17 0x0817583b in io_wait_loop_epoll (unix_sock=89) at io_wait.h:1092 #18 tcp_receive_loop (unix_sock=89) at tcp_read.c:1345 #19 0x0816e2e9 in tcp_init_children () at tcp_main.c:4867 #20 0x080affb1 in main_loop () at main.c:1646 #21 0x080b1be4 in main (argc=9, argv=0xbfd61e54) at main.c:2446 Pid 3: Core was generated by `/usr/sbin/kamailio -u swrun -g sw -m 120 -f /etc/kamailio/kamailio.cfg'. Program terminated with signal 11, Segmentation fault. #0 0xb76c9e7c in memmove () from /lib/libc.so.6 (gdb) bt #0 0xb76c9e7c in memmove () from /lib/libc.so.6 #1 0x081724e7 in tcp_read_req (con=0xb022c8f0, bytes_read=0xbfd619cc, read_flags=0xbfd619c4) at tcp_read.c:1026 #2 0x08172f67 in handle_io (fm=<value optimized out>, events=1, idx=<value optimized out>) at tcp_read.c:1234 #3 0x0817583b in io_wait_loop_epoll (unix_sock=93) at io_wait.h:1092 #4 tcp_receive_loop (unix_sock=93) at tcp_read.c:1345 #5 0x0816e2e9 in tcp_init_children () at tcp_main.c:4867 #6 0x080affb1 in main_loop () at main.c:1646 #7 0x080b1be4 in main (argc=9, argv=0xbfd61e54) at main.c:2446 _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users(a)lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users