T-003: Vulnerabilities in Microsoft Excel

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Special Forums Cybersecurity Security Advisories (RSS) T-003: Vulnerabilities in Microsoft Excel

11-13-2008

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T-003: Vulnerabilities in Microsoft Excel

Several remote code execution vulnerabilities exist in the way Microsoft Excel: 1) processes a VBA Performance Cache; 2) an improper memory allocationwhenloading Excel objects; and 3) a formula parsing vulnerability when parsing Microsoft Excel documents containing a specially crafted formula embedded inside a cell. The risk is MEDIUM. An attacker who successfully exploited this vulnerability could take complete control of an affected system.

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excel::template::element::backref

Excel::Template::Element::Backref(3pm)			User Contributed Perl Documentation		    Excel::Template::Element::Backref(3pm)

NAME

       Excel::Template::Element::Backref - Excel::Template::Element::Backref

PURPOSE

       Returns the cell location (i.e. B2) of the last cell to name this reference.  To return the location of the entire range of cells to name
       this reference see RANGE.

NODE NAME

       BACKREF

INHERITANCE

       Excel::Template::Element

ATTRIBUTES

       o   REF

	   This is the name of the reference to look up.

CHILDREN

       None

EFFECTS

       None

DEPENDENCIES

       This will only be used within CELL tags.

USAGE

       In the example...

	 <row>
	   <cell ref="this_cell"/><cell ref="that_cell"><cell ref="that_cell">
	 </row>
	 <row>
	   <formula>=<backref ref="this_cell">+<backref ref="that_cell"></formula>
	 </row>

       The formula in row 2 would be =A1+C1.  C1 is the last to reference "that_cell".

AUTHOR

       Rob Kinyon (rkinyon@columbus.rr.com)

SEE ALSO

       CELL, RANGE

perl v5.14.2							    2012-04-29				    Excel::Template::Element::Backref(3pm)