Bug #6143: sshd can't load host key log spam - pfSense - pfSense bugtracker

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Bug #6143

closed

NN CB

sshd can't load host key log spam

Bug #6143: sshd can't load host key log spam

Added by NOYB NOYB over 10 years ago. Updated over 10 years ago.

Status:

Resolved

Priority:

Low

Assignee:

Chris Buechler

Category:

Operating System

Target version:

2.3.1

Start date:

04/13/2016

Due date:

% Done:

Estimated time:

Plus Target Version:

Release Notes:

Affected Version:

2.3

Affected Architecture:

Description

https://forum.pfsense.org/index.php?topic=109815.0

Apr 13 10:59:46 sshd 76036 error: Could not load host key: /etc/ssh/ssh_host_dsa_key Apr 13 10:59:48 sshd 76036 Accepted publickey for root from 192.168.2.21 port 63937 ssh2: RSA SHA256:+iLjwFi...

SSH works, it just spits out this error in the system log every time connected.

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JD Updated by Jose Luis Duran over 10 years ago Actions
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#1

You probably had connected previously to 192.168.2.21 as root and have a DSA public key in your ~/.ssh/known_hosts (HKEY_CURRENT_USER\SoftWare\SimonTatham\PuTTY\SshHostKeys if you are using PuTTY).

DSA keys are no longer an option, and hopefully, neither will ECDSA (https://github.com/pfsense/pfsense/pull/2783) in the next version.

The solution is to remove the DSA public key from your keystore (usually in ~/.ssh/known_hosts).

As a recommendation, you should consider disabling DSA keys on your ssh client as well.

CB Updated by Chris Buechler over 10 years ago Actions
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#2

Subject changed from sshd can't load host key error to sshd can't load host key log spam
Category set to Operating System
Status changed from New to Confirmed
Priority changed from Normal to Low

sshd tries to load those files even if they're not there unless HostKey is configured in sshd_config. It's just log spam, can be fixed by specifying HostKey in sshd_config for each host key.

JT Updated by Jim Thompson over 10 years ago Actions
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#3

Assignee set to Renato Botelho

Let's look at bringing in the PR, as well.

JD Updated by Jose Luis Duran over 10 years ago Actions
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#4

I've opened https://github.com/pfsense/pfsense/pull/2874.

I have not been able to replicate this, from the comment, this should fix it?

NN Updated by NOYB NOYB over 10 years ago Actions
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#5

Yup. Looks like that fixes it.
Apply the code and no more error in the log.
Remove the code and error returns to the log.
Thanks

CB Updated by Chris Buechler over 10 years ago Actions
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#6

Status changed from Confirmed to Feedback
Assignee changed from Renato Botelho to Chris Buechler

that works, leaving to verify in snapshot

CB Updated by Chris Buechler over 10 years ago Actions
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#7

Status changed from Feedback to Resolved

works

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Bug #6143

sshd can't load host key log spam

JD Updated by Jose Luis Duran over 10 years ago Actions
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#1

CB Updated by Chris Buechler over 10 years ago Actions
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#2

JT Updated by Jim Thompson over 10 years ago Actions
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#3

JD Updated by Jose Luis Duran over 10 years ago Actions
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#4

NN Updated by NOYB NOYB over 10 years ago Actions
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CB Updated by Chris Buechler over 10 years ago Actions
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#6

CB Updated by Chris Buechler over 10 years ago Actions
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#7

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Bug #6143

sshd can't load host key log spam

JD Updated by Jose Luis Duran over 10 years ago ActionsCopy link #1

CB Updated by Chris Buechler over 10 years ago ActionsCopy link #2

JT Updated by Jim Thompson over 10 years ago ActionsCopy link #3

JD Updated by Jose Luis Duran over 10 years ago ActionsCopy link #4

NN Updated by NOYB NOYB over 10 years ago ActionsCopy link #5

CB Updated by Chris Buechler over 10 years ago ActionsCopy link #6

CB Updated by Chris Buechler over 10 years ago ActionsCopy link #7

JD Updated by Jose Luis Duran over 10 years ago Actions
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#1

CB Updated by Chris Buechler over 10 years ago Actions
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#2

JT Updated by Jim Thompson over 10 years ago Actions
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#3

JD Updated by Jose Luis Duran over 10 years ago Actions
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#4

NN Updated by NOYB NOYB over 10 years ago Actions
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#5

CB Updated by Chris Buechler over 10 years ago Actions
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#6

CB Updated by Chris Buechler over 10 years ago Actions
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#7