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Re: [tor-bugs] #3930 [Tor Relay]: tor 0.2.2.32 crashes with SIGSEV on SSL_CIPHER_get_name (was: tor 0.2.2.32 crashes with SIGSEV on SSL_CIPGER_get_name)



#3930: tor 0.2.2.32 crashes with SIGSEV on SSL_CIPHER_get_name
-----------------------------------------------------+----------------------
 Reporter:  monochromec                              |          Owner:                    
     Type:  defect                                   |         Status:  new               
 Priority:  major                                    |      Milestone:  Tor: 0.2.2.x-final
Component:  Tor Relay                                |        Version:  Tor: 0.2.2.32     
 Keywords:  relay libssl sigsev ssl_cipher_get_name  |         Parent:                    
   Points:                                           |   Actualpoints:                    
-----------------------------------------------------+----------------------
Changes (by arma):

  * milestone:  => Tor: 0.2.2.x-final


Old description:

> When running in daemon mode as a relay, tor crashes with a SIGSEV in in
> libssl.
>
> Here the stack trace:
>
> #0  0x40168b00 in SSL_CIPHER_get_name () from /lib/libssl.so.1.0.0
> #1  0x000bdbb4 in tor_tls_client_is_using_v2_ciphers (ssl=<value
> optimized out>, address=0x3a0ed8 "[scrubbed]") at tortls.c:866
> #2  0x000bde9c in tor_tls_handshake (tls=0x39ea38) at tortls.c:1294
> #3  0x00077d98 in connection_tls_continue_handshake (conn=0x39f608) at
> connection_or.c:920
> #4  0x0006e72c in connection_handle_read (conn=0x39f608) at
> connection.c:2610
> #5  0x0001136c in conn_read_callback (fd=<value optimized out>, event=0,
> _conn=0x401765bc) at main.c:514
> #6  0x401018a4 in event_base_loop () from /opt/lib/libevent-2.0.so.5
> #7  0x0000e7b8 in do_main_loop () at main.c:1564
> #8  0x0000ea70 in tor_main (argc=1, argv=<value optimized out>) at
> main.c:2226
> #9  0x403159a0 in __libc_start_main () from /lib/libc.so.6
> #10 0x0000d388 in _start ()
>
> Plattform is a Synology DS211j: Linux 2.6.32.12 #1748 Wed Jun 29 11:44:24
> CST 2011 armv5tel GNU/Linux synology_88f6281_211j
>
> Client-only operation works fine.

New description:

 When running in daemon mode as a relay, tor crashes with a SIGSEV in in
 libssl.

 Here the stack trace:

 {{{
 #0  0x40168b00 in SSL_CIPHER_get_name () from /lib/libssl.so.1.0.0
 #1  0x000bdbb4 in tor_tls_client_is_using_v2_ciphers (ssl=<value optimized
 out>, address=0x3a0ed8 "[scrubbed]") at tortls.c:866
 #2  0x000bde9c in tor_tls_handshake (tls=0x39ea38) at tortls.c:1294
 #3  0x00077d98 in connection_tls_continue_handshake (conn=0x39f608) at
 connection_or.c:920
 #4  0x0006e72c in connection_handle_read (conn=0x39f608) at
 connection.c:2610
 #5  0x0001136c in conn_read_callback (fd=<value optimized out>, event=0,
 _conn=0x401765bc) at main.c:514
 #6  0x401018a4 in event_base_loop () from /opt/lib/libevent-2.0.so.5
 #7  0x0000e7b8 in do_main_loop () at main.c:1564
 #8  0x0000ea70 in tor_main (argc=1, argv=<value optimized out>) at
 main.c:2226
 #9  0x403159a0 in __libc_start_main () from /lib/libc.so.6
 #10 0x0000d388 in _start ()
 }}}

 Plattform is a Synology DS211j: Linux 2.6.32.12 #1748 Wed Jun 29 11:44:24
 CST 2011 armv5tel GNU/Linux synology_88f6281_211j

 Client-only operation works fine.

--

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/3930#comment:1>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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