upstream/postgresql
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2026-03-03 13:51:00 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions
postgresql/src/backend/libpq
History
Magnus Hagander 24d446b569 Fix low-risk potential denial of service against RADIUS login. 
Corrupt RADIUS responses were treated as errors and not ignored
(which the RFC2865 states they should be). This meant that a
user with unfiltered access to the network of the PostgreSQL
or RADIUS server could send a spoofed RADIUS response
to the PostgreSQL server causing it to reject a valid login,
provided the attacker could also guess (or brute-force) the
correct port number.

Fix is to simply retry the receive in a loop until the timeout
has expired or a valid (signed by the correct RADIUS server)
packet arrives.

Reported by Alan DeKok in bug #5687.
2010-10-15 16:59:12 +02:00
..
auth.c Fix low-risk potential denial of service against RADIUS login. 2010-10-15 16:59:12 +02:00
be-fsstubs.c pgindent run for 9.0 2010-02-26 02:01:40 +00:00
be-secure.c pgindent run for 9.0, second run 2010-07-06 19:19:02 +00:00
crypt.c pgindent run for 9.0 2010-02-26 02:01:40 +00:00
hba.c pgindent run for 9.0, second run 2010-07-06 19:19:02 +00:00
ip.c pgindent run for 9.0 2010-02-26 02:01:40 +00:00
Makefile Refactor backend makefiles to remove lots of duplicate code 2008-02-19 10:30:09 +00:00
md5.c pgindent run for 9.0 2010-02-26 02:01:40 +00:00
pg_hba.conf.sample Add support for RADIUS authentication. 2010-01-27 12:12:00 +00:00
pg_ident.conf.sample Reformat the comments in pg_hba.conf and pg_ident.conf 2010-01-26 06:58:39 +00:00
pqcomm.c Document the existence of the socket lock file under unix_socket_directory, 2010-08-26 22:00:32 +00:00
pqformat.c Remove all the special-case code for INT64_IS_BUSTED, per decision that 2010-01-07 04:53:35 +00:00
pqsignal.c Update copyright for the year 2010. 2010-01-02 16:58:17 +00:00
README.SSL Remove large parts of the old SSL readme, that consisted of a couple 2008-10-24 11:48:29 +00:00

README.SSL 

$PostgreSQL: pgsql/src/backend/libpq/README.SSL,v 1.7 2008/10/24 11:48:29 mha Exp $

SSL
===

>From the servers perspective:


  Receives StartupPacket
           |
           |
 (Is SSL_NEGOTIATE_CODE?) -----------  Normal startup
           |                  No
           |
           | Yes
           |
           |
 (Server compiled with USE_SSL?) ------- Send 'N'
           |                       No        |
           |                                 |
           | Yes                         Normal startup
           |
           |
        Send 'S'
           |
           |
      Establish SSL
           |
           |
      Normal startup
     




>From the clients perspective (v6.6 client _with_ SSL):


      Connect
         |
         |
  Send packet with SSL_NEGOTIATE_CODE
         |
         |
  Receive single char  ------- 'S' -------- Establish SSL
         |                                       |
         | '<else>'                              |
         |                                  Normal startup
         |
         |
   Is it 'E' for error  ------------------- Retry connection
         |                  Yes             without SSL
         | No
         |
   Is it 'N' for normal ------------------- Normal startup
         |                  Yes
         |
   Fail with unknown

---------------------------------------------------------------------------