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Bug 1105171 - Libreswan doesn't work with some ike options.
Summary: Libreswan doesn't work with some ike options.
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: libreswan
Version: 7.0
Hardware: All
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Paul Wouters
QA Contact: Jaroslav Aster
URL:
Whiteboard:
Depends On: 730975
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-06-05 13:54 UTC by Jaroslav Aster
Modified: 2015-03-05 10:22 UTC (History)
2 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of: 730975
Environment:
Last Closed: 2015-03-05 10:22:26 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2015:0431 0 normal SHIPPED_LIVE libreswan bug fix and enhancement update 2015-03-05 14:52:35 UTC

Description Jaroslav Aster 2014-06-05 13:54:23 UTC 
libreswan has exactly the same behaviour as openswan. I tested it in rhel7 and I used libreswan-3.8-5.el7.

+++ This bug was initially created as a clone of Bug #730975 +++

Description of problem:
Openswan doesn't work with ike=modp1536 option, which is suggested as one of examples in manual pages of ipsec.conf.

Version-Release number of selected component (if applicable):
openswan-2.6.32-4.el6_1.1

How reproducible:
always

Steps to Reproduce:
1.cp ipsec.conf /etc/ipsec.conf

version    2.0

config setup
    protostack=netkey
    nat_traversal=yes
    plutostderrlog=/var/log/pluto.log

conn testA
        auto=add
        authby=secret
        type=transport
        left=127.0.0.1
        right=127.0.0.1
        ike=modp1536
        phase2=esp
        phase2alg=aes-sha1
        loopback=yes


2.cp ipsec.secrets /etc/ipsec.secrets

: PSK "whatever"


3.ip xfrm state flush
4.service ipsec restart
5.ipsec auto --up testA
6.ip xfrm state
  
Actual results of ipsec auto --up testA:

000 initiating all conns with alias='testA' 
021 no connection named "testA"

Expected results:
Succesfully create an IPsec connection

Additional info:
I have checked output of tcpdump, packets are unencrypted.


--- Additional comment from Jaroslav Aster on 2014-06-05 07:48:32 EDT ---

Hi,

I can confirm it and then I did some tests and found out that there is something wrong in parsing ike option. A lot of more things do not work and end with same error.

example:


1, all alone dh

ike=modp1536 # fail
ike=dh22 # fail
ike=dh23 # fail
ike=dh24 # fail
...

2, all alone hash

ike=md5 # fail
ike=sha1 # fail

3, mix dh and hash

ike=md5;dh22 # fail
ike=sha1;modp1024 # fail
...

4, 

ike=aes-md5;dh22,modp1024 # fail

Man pages says that it should be possible to set these values, ike=modp1536 is as an example in man page ipsec.conf.

It seems only values from right can miss.

ike=aes-md5;dh22,3des # pass
ike=aes-md5,3des # pass
ike=aes,3des # pass
Comment 1 Paul Wouters 2014-07-04 01:05:33 UTC 
fixed in upstream 3.9 (man page entry no longer allows specifying only a modp group) - will come in via the rebase
Comment 2 Paul Wouters 2014-10-24 04:09:30 UTC 
This is already fixed in 3.9
Comment 3 Jaroslav Aster 2014-11-11 14:41:00 UTC 
Hi Paul,

I can still see it in man page ipsec.conf in the latest libreswan's build for rhel7. So, it is not fixed.

# rpm -q libreswan
libreswan-3.12-1.el7.x86_64

# man ipsec.conf | col -b | grep 'ike=modp1536'
           ike=aes128-sha1;dh22, ike=3des-md5;modp1024,aes-sha1;modp1536 or ike=modp1536. The options must be suitable as a value of ipsec_spi(8)'s --ike option. The default is to
Comment 4 Paul Wouters 2014-12-03 14:42:19 UTC 
It seemed to have appeared in two places :/

I just fixed the ipsec.conf ike.xml files upstream and regenerated the man page, so it will be correct in 3.13.
Comment 9 Jaroslav Aster 2015-01-06 09:04:59 UTC 
VERIFIED: /CoreOS/openswan/Sanity/bz730975-Openswan-doesn-t-work-with-ike-modp1536-option

libreswan-3.12-4.el7

::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: [   LOG    ] :: Test
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

:: [   PASS   ] :: Command 'grep 'ike=modp1536' /tmp/tmp.NTD3DD0ZNo' (Expected 1, got 1)
:: [   LOG    ] :: Duration: 0s
:: [   LOG    ] :: Assertions: 1 good, 0 bad
:: [   PASS   ] :: RESULT: Test


libreswan-3.8-5.el7

::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::
:: [   LOG    ] :: Test
::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

:: [   FAIL   ] :: Command 'grep 'ike=modp1536' /tmp/tmp.ARNu1dfr9s' (Expected 1, got 0)
:: [   LOG    ] :: Duration: 0s
:: [   LOG    ] :: Assertions: 0 good, 1 bad
:: [   FAIL   ] :: RESULT: Test
Comment 11 errata-xmlrpc 2015-03-05 10:22:26 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-0431.html
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