The "Protect Worksheet" functionality in Mathsoft Mathcad 12 through 13.1, and PTC Mathcad 14, implements file access restrictions via a protection element in a gzipped XML file, which allows attackers to bypass these restrictions by removing this element. Mathsoft sold mathcad to PTC in 2006. PTC now supports all vulnerable versions.
Publication date: Fri, 19 Oct 2007 01:17:00 +0000