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https://issues.apache.org/jira/browse/GUACAMOLE-400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16294036#comment-16294036
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Michael Jumper commented on GUACAMOLE-400:
------------------------------------------
Updated description/title to clarify the nature of the issue, as guacd does not
crash. The SSH connection closes due to the segfault, while guacd itself and
any other connections remain unaffected.
> Connection segfaults when SSH private key fails to load
> -------------------------------------------------------
>
> Key: GUACAMOLE-400
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-400
> Project: Guacamole
> Issue Type: Bug
> Components: SSH
> Affects Versions: 0.9.13-incubating
> Environment: x86_64 GNU/Linux
> Reporter: James He
> Fix For: 0.9.14
>
>
> h3. Steps:
> # Generate a RSA key pair with ssh-keygen on Linux. Set private key
> passphrase.
> # Configure the public key on a SSH server.
> # Configure a SSH connection with the private key for authentication.
> Intentionally set a wrong passphrase!!
> # Start the SSH connection from web portal.
> h3. Expected result:
> Connecting to the SSH server fails due to the wrong passphrase.
> h3. Actual result:
> The SSH connection closes with a segfault.
> {code:none}
> (gdb) bt
> #0 0x00002aaaae365596 in guac_common_ssh_authenticate
> (common_session=0x2aaab851d080) at ssh.c:300
> #1 0x00002aaaae365c2c in guac_common_ssh_create_session
> (client=0x2aaab000ac40, hostname=0xe16e20 "10.148.38.168", port=0xe17100
> "4118", user=0x0) at ssh.c:520
> #2 0x00002aaaae35e01c in ssh_client_thread (data=0x2aaab000ac40) at ssh.c:220
> #3 0x00002aaaab8521a4 in start_thread (arg=0x2aaab5001700) at
> pthread_create.c:309
> #4 0x00002aaaabd5965d in clone () from /lib64/libc.so.6
> {code}
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