/ 
Tk800.007
/ Tk::Derived
Security Advisories (4)
CVE-2006-4484 (2008-10-01)

Buffer overflow in the LWZReadByte_ function in the GD extension in allows remote attackers to have an unknown impact via a GIF file with input_code_size greater than MAX_LWZ_BITS, which triggers an overflow when initializing the table array.

CVE-2007-4769 (2008-01-09)

The regular expression parser in TCL before 8.4.17, as used in PostgreSQL 8.2 before 8.2.6, 8.1 before 8.1.11, 8.0 before 8.0.15, and 7.4 before 7.4.19, allows remote authenticated users to cause a denial of service (backend crash) via an out-of-bounds backref number.

CVE-2007-4772 (2008-01-09)

The regular expression parser in TCL before 8.4.17, as used in PostgreSQL 8.2 before 8.2.6, 8.1 before 8.1.11, 8.0 before 8.0.15, and 7.4 before 7.4.19, allows context-dependent attackers to cause a denial of service (infinite loop) via a crafted regular expression.

CVE-2007-6067 (2008-01-09)

Algorithmic complexity vulnerability in the regular expression parser in TCL before 8.4.17, as used in PostgreSQL 8.2 before 8.2.6, 8.1 before 8.1.11, 8.0 before 8.0.15, and 7.4 before 7.4.19, allows remote authenticated users to cause a denial of service (memory consumption) via a crafted "complex" regular expression with doubly-nested states.

NAME

Tk::Derived - Base class for widgets derived from others

SYNOPSIS

package Tk::Whatever;
require Tk::Something;
require Tk::Derived;

@ISA = qw(Tk::Derived Tk::Something);

sub Populate
{
 my ($cw,$args) = @_;
 ...
 $cw->SUPER::Populate($args);
 $cw->ConfigSpecs(...);
 ...
}

DESCRIPTION

Tk::Derived is used with perl5's multiple inheritance to override some methods normally inherited from Tk::Widget.

Tk::Derived should precede any Tk widgets in the class's @ISA.

Tk::Derived's main purpose is to apply wrappers to configure and cget methods of widgets to allow the derived widget to add to or modify behaviour of the configure options supported by the base widget.

The derived class should normally override the Populate method provided by Tk::Derived and call ConfigSpecs to declare configure options.

The public methods provided by Tk::Derived are as follows:

->ConfigSpecs(-key => [kind, name, Class, default], ...)

SEE ALSO

Tk::configspec Tk::mega

1 POD Error

The following errors were encountered while parsing the POD:

Around line 45:

Unterminated I<...> sequence