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| 14.10.xC10 |
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| 12.10.xC16.X5 |
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| 11.70.xC9.XB |
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| 11.50.xC9.X2 |
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| 11.10.xC3.W5 |
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Informix - Problem description
| Problem IT27502 | Status: Closed |
SSL SOCKET LISTENER CAN ASSERT IN SSL_SEND IF BUMP INTO MAX_INCOMPLETE_SESSIONS | |
| product: | |
INFORMIX SERVER / 5725A3900 / C10 - IDS 12.10 | |
| Problem description: | |
n the case of the reproduction described below, consider the
onconfig param, MAX_INCOMPLETE_CONNECTIONS
set to 128. If, as in a DoS attack, your count of SSL
listen_authenticate threads increases enough to bump
into MAX_INCOMPLETE_CONNECTIONS, then the socssllst thread will
assert and cause engine to crash with
a comparable message in the online.log to:
09:05:52 128 incomplete connections at this time. System
might be under attack through invalid clients on the listener
port.
09:05:52 Assert Failed: No Exception Handler
09:05:52 IBM Informix Dynamic Server Version 12.10.FC7W1XV
09:05:52 Who: Session(3315, informix@, 0, (nil))
Thread(19, socssllst, 0, 1)
File: mtex.c Line: 508
09:05:52 Results: Exception Caught. Type: MT_EX_OS,
Context: mem
09:05:52 Action: Please notify IBM Informix Technical
Support.
09:05:52 See Also: /opt/informix/tmp/af.3fb3950,
shmem.3fb3950.0
And a stack like
09:05:52 Stack for thread: 19 socssllst
base: 0x0000000046324000
len: 69632
pc: 0x00000000013d2727
tos: 0x00000000448ba3b0
state: running
vp: 1
(oninit) afstack
(oninit) mt_ex_throw_sig
(oninit) afsig_handler
(Linux)
(oninit) ssl_send
(oninit) sendsocket
(oninit) slSQIrsp
(oninit) pfConRes
(oninit) ASF_Call
(oninit) sql_listener
(oninit) startup | |
| Problem Summary: | |
**************************************************************** * USERS AFFECTED: * * Users of IDS 12.10.xC10 and older versions. * **************************************************************** * PROBLEM DESCRIPTION: * * SSL socket listener can assert in ssl_send if bump into * * MAX_INCOMPLETE_CONNECTIONS. * **************************************************************** * RECOMMENDATION: * **************************************************************** | |
| Local Fix: | |
| Solution | |
| Workaround | |
not known / see Local fix | |
| Timestamps | |
Date - problem reported : Date - problem closed : Date - last modified : | 24.12.2018 07.10.2019 07.10.2019 |
| Problem solved at the following versions (IBM BugInfos) | |
12.10.xC11 | |
| Problem solved according to the fixlist(s) of the following version(s) | |
