M J Harvey created GUACAMOLE-1017:
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Summary: Invalid UTF-8 string passed to pango_layout_set_text() --
leading to guacd segfault
Key: GUACAMOLE-1017
URL: https://issues.apache.org/jira/browse/GUACAMOLE-1017
Project: Guacamole
Issue Type: Bug
Components: guacd
Environment: CentOS 7, guacd 1.1.0-1 from EPEL
rpm -qa | grep guac
guacd-1.1.0-1.el7.x86_64
libguac-client-vnc-1.1.0-1.el7.x86_64
libguac-1.1.0-1.el7.x86_64
libguac-client-rdp-1.1.0-1.el7.x86_64
libguac-client-ssh-1.1.0-1.el7.x86_64
Reporter: M J Harvey
Hi,
Probabilistic reproducible segfault of guacd:
* Installed guacd and guacamole from EPEL on a CentOS 7.7.1908 system.
* Configure an SSH connection type.
* Establish guacamole session to SSH server
* Do "cat /dev/urandom" to generate garbage.
* {{Observe /var/log/messages on the guacd server, you'll see frequent logs of
}}{{"Invalid UTF-8 string passed to pango_layout_set_text()"}}
* {{Session will pretty rapidly terminate. About 20% of the time this is an
uncontrolled segfault from libc}}
{{}}
{{guacd[7688]: segfault at 7f3ea6177ff0 ip 00007f3ea3cb2b1d sp 00007f3e9d902ab8
error 4 in libc-2.17.so[7f3ea3b57000+1c3000]}}
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