Bug 526198 - buffer_get_ret: trying to get more bytes 4 than in buffer 0
Summary: buffer_get_ret: trying to get more bytes 4 than in buffer 0
Keywords:
Status: CLOSED NOTABUG
Alias: None
Product: Fedora
Classification: Fedora
Component: openssh
Version: 12
Hardware: All
OS: Linux
low
medium
Target Milestone: ---
Assignee: Jan F. Chadima
QA Contact: Fedora Extras Quality Assurance
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2009-09-29 08:44 UTC by Mark Watts
Modified: 2010-03-19 14:29 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2010-03-19 14:29:24 UTC


Attachments (Terms of Use)

Description Mark Watts 2009-09-29 08:44:54 UTC
openssh-clients-5.1p1-3.fc10.i386
openssh-5.1p1-3.fc10.i386

SSH into a Juniper SSG140 Firewall, give password then wait for ~10 seconds...

$ ssh -v -l netscreen 192.168.1.1
OpenSSH_5.1p1, OpenSSL 0.9.8g 19 Oct 2007
debug1: Reading configuration data /home/mwatts/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: Applying options for *
debug1: Connecting to 192.168.1.1 [192.168.1.1] port 22.
debug1: Connection established.
debug1: identity file /home/mwatts/.ssh/identity type -1
debug1: identity file /home/mwatts/.ssh/id_rsa type 1
debug1: identity file /home/mwatts/.ssh/id_dsa type 2
debug1: Remote protocol version 2.0, remote software version NetScreen
debug1: no match: NetScreen
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_5.1
debug1: SSH2_MSG_KEXINIT sent
debug1: SSH2_MSG_KEXINIT received
debug1: kex: server->client 3des-cbc hmac-sha1 none
debug1: kex: client->server 3des-cbc hmac-sha1 none
debug1: sending SSH2_MSG_KEXDH_INIT
debug1: expecting SSH2_MSG_KEXDH_REPLY
Warning: Permanently added '192.168.1.1' (DSA) to the list of known hosts.
debug1: ssh_dss_verify: signature correct
debug1: SSH2_MSG_NEWKEYS sent
debug1: expecting SSH2_MSG_NEWKEYS
debug1: SSH2_MSG_NEWKEYS received
debug1: SSH2_MSG_SERVICE_REQUEST sent
debug1: SSH2_MSG_SERVICE_ACCEPT received
debug1: Authentications that can continue: password
debug1: Next authentication method: password
netscreen@192.168.1.1's password: 
debug1: Authentication succeeded (password).
debug1: channel 0: new [client-session]
debug1: Entering interactive session.
debug1: Requesting authentication agent forwarding.
debug1: Sending environment.
debug1: Sending env LANG = en_GB.UTF-8
Remote Management Console
netscreen(M)-> buffer_get_ret: trying to get more bytes 4 than in buffer 0
buffer_get_int: buffer error

Comment 1 Mark Watts 2009-09-29 10:07:59 UTC
This problem "goes away" with Fedora 11 - openssh-clients-5.2p1-1.fc11.i586 so backporting this version to F10 would probably do it.

Comment 2 Bug Zapper 2009-11-18 12:15:56 UTC
This message is a reminder that Fedora 10 is nearing its end of life.
Approximately 30 (thirty) days from now Fedora will stop maintaining
and issuing updates for Fedora 10.  It is Fedora's policy to close all
bug reports from releases that are no longer maintained.  At that time
this bug will be closed as WONTFIX if it remains open with a Fedora 
'version' of '10'.

Package Maintainer: If you wish for this bug to remain open because you
plan to fix it in a currently maintained version, simply change the 'version' 
to a later Fedora version prior to Fedora 10's end of life.

Bug Reporter: Thank you for reporting this issue and we are sorry that 
we may not be able to fix it before Fedora 10 is end of life.  If you 
would still like to see this bug fixed and are able to reproduce it 
against a later version of Fedora please change the 'version' of this 
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please add a comment here and someone will do it for you.

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Comment 3 Mark Watts 2010-02-08 16:24:59 UTC
Re-opening, its back again on Fedora 12.

$ rpm -q openssh-clients
openssh-clients-5.2p1-31.fc12.i686

$ ssh netscreen@ssg-140
netscreen@ssg-140's password: 
Remote Management Console
ssg-140-> buffer_get_ret: trying to get more bytes 4 than in buffer 0
buffer_get_int: buffer error

Comment 4 Jan F. Chadima 2010-03-16 16:44:00 UTC
can you test the latest version openssh from f-13? there is openssh-5.4p1 which has rewritten the transport layer and message multiplex.

Comment 5 Mark Watts 2010-03-19 14:29:24 UTC
OK, I still see the same issue with openssh-clients-5.4p1-1.fc13.i686.rpm

However, I think it may be related to the following section I have in my users ~/.ssh/config file:

Host *
     ServerAliveCountMax 4
     ServerAliveInterval 15

As another user (root in this case) I do _not_ see the disconnect, so I think I've actually found a bug in ScreenOS on Juniper firewalls, not a bug in SSH itself.

As a result, I'm closing this again.


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