It was reported to Ubuntu that vte regressed the fix for CVE-2003-0070 in the following upstream commit:

http://git.gnome.org/browse/vte/commit/?id=58bc3a942f198a1a8788553ca72c19d7c1702b74

This would allow for an information disclosure of the window title of the gnome-terminal.

This issue does not affect Red Hat Enterprise Linux 5 or earlier, which still replace the contents of the window title with "LTerminal", rather than "l[contents of terminal window]"; as demonstrated with:

$ echo -e "\e[21t"