X applications crashing under 5.3BETA7 and X.org

freebsd-stable at auscert.org.au freebsd-stable at auscert.org.au
Mon Oct 18 20:14:01 PDT 2004


> On Tue, 2004-10-19 at 10:13 +1000, freebsd-stable at auscert.org.au wrote:
> > I have a problem with applications crashing. Xterm will launch and run ok,
> > but any attempt to mouse select text will cause an immediate crash with
> > this output on the console:
> > 
> > xterm:  warning, error event received:
> > X Error of failed request:  BadAtom (invalid Atom parameter)
> >   Major opcode of failed request:  18 (X_ChangeProperty)
> >   Atom id in failed request:  0x17f
> >   Serial number of failed request:  131
> >   Current serial number in output stream:  133
> > 
> 
> Hi,
> 
> this isn't a Xorg issue it's just a X11 forwarding issue.
> Newer OpenSSH versions don't use trusted X11 forwarding by default which
> results in the above error if you try to cut & paste.
> Just use trusted X11 forwarding and all should be fine.
> 
> Either ssh -Y server-hostname or add "ForwardX11Trusted yes" to your ssh
> config file.
> 
> 
> -- 
>   Sascha
> 

Thanks, Sascha. Works perfectly now. I'd never even heard of trusted X11
forwarding before...

-- Joel Hatton --
Security Analyst                    | Hotline: +61 7 3365 4417
AusCERT - Australia's national CERT | Fax:     +61 7 3365 7031
The University of Queensland        | WWW:     www.auscert.org.au
Qld 4072 Australia                  | Email:   auscert at auscert.org.au


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