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https://issues.apache.org/jira/browse/GUACAMOLE-184?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Jumper resolved GUACAMOLE-184.
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Resolution: Fixed
Fix Version/s: 0.9.12-incubating
> guac_common_surface_dup() may send invalid PNG
> ----------------------------------------------
>
> Key: GUACAMOLE-184
> URL: https://issues.apache.org/jira/browse/GUACAMOLE-184
> Project: Guacamole
> Issue Type: Bug
> Components: guacamole-server
> Reporter: Michael Jumper
> Assignee: Michael Jumper
> Fix For: 0.9.12-incubating
>
>
> {{guac_common_surface_dup()}} fails to check whether the dimensions of the
> surface are 0x0. Though this is a perfectly valid state for a surface, it is
> not possible to send a 0x0 image (nor does it really make sense to try); the
> PNG encoding functions fail, producing an invalid Guacamole instruction and
> breaking the protocol stream.
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