[jira] [Created] (GUACAMOLE-1017) Invalid UTF-8 string passed to pango_layout_set_text() -- leading to guacd segfault

["M J Harvey (Jira)" <ji...@apache.org>]

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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