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He started fuzzing a specific legacy file format (. About CVE-2021-33035ĬVE-2021-33035 was discovered by researcher Eugene Lim via fuzzing and source code review of Apache OpenOffice. OPENOFFICE DOCUMENTS SOFTWAREThe vulnerability has been fixed in the software’s source code, but there is no official software version with the fix (though test build installers are available). ![]() Note that all my comments are based on my previous use of AOO but I expect they all apply to LO.Apache OpenOffice, one of the most popular open-source office productivity software suites, sports a RCE vulnerability (CVE-2021-33035) that could be triggered via a specially crafted document. This is how I would approach the project.ĭon't even think of using AOO for this project - you will lose your images. OPENOFFICE DOCUMENTS PDFMerge the PDF files with PDFSam which can merge separate PDF files into one PDF file. OPENOFFICE DOCUMENTS HOW TOIf your final document is to be a PDF then create single chapters in LO with the appropriate page numbers - see the tutorial on page numbering for how to set page numbers correctly. OPENOFFICE DOCUMENTS UPDATEI have found master documents to be particularly prone to the "white gaps" problem - just update the master and they should disappear. You can convert a master document and it subs into a single. I ensure that the Master and all the sub documents have the identical format and I use the same template to create everything so there is no change when the sub documents are pulled in to the master. Master documents can paginate and index when set up correctly so be sure to set up the Master and sub documents correctly. See Chapter 13 - Working with M aster D ocuments in the Writer User Guide and the comprehensive Creating and Using Master Documents. 130 pages suggests 130 images and 37 MB suggests ~280kB per image - is that correct? See the tutorial for minimising image sizes.Ī master document should help immensely by reducing the size of each sub-document and trapping page spills to that single document. The page count will be too high which shows this has happened.īe very careful how you anchor the images - see the tutorial. Note AOO/LO may come out of its loop with an image in the wrong place or a table split across two pages or with white gaps in the document. Adding extra, redundant page breaks to "catch" spills while you are editing should help. Note that image location, page count, pagination and indexing will not be correct until the document has been fully laid out. If you now make an edit on page 1 which causes a page spill, the entire document has to be laid out again. Do a test - open the document and then do nothing and wait until Windows TaskManager shows when the AOO/LO CPU use falls to zero - the document is now laid out. A document with hundreds of pages where images etc may spill to the following page could take 30 minutes or longer to layout. ![]() Why is my page count so high? Why does my page count keep changing? Why do white gaps appear in my document? in Some useful hints on using images for a detailed explanation and some hints on how to manage it. It is caused by AOO or LO taking a long time to lay out a complex document with images or tables or footnotes etc where page spills can occur. Images disappear from the document or the document just starts behaving oddly (e.g., a table suddenly displays more rows than it actually has). Gwfran wrote: ↑ Wed 4:25 amThe document is unstable at best. ![]()
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