on 0.9.5 (the latest version) of podofo:
there is an undefined behavior (memcpy with null pointer) in
PdfMemoryOutputStream::Write function (src/base/PdfOutputStream.cpp),
which can cause denial of service (crash) or possibly other
unspecified impacts via a crafted pdf file.

src/base/PdfOutputStream.cpp:124:48: runtime error: null pointer
passed as argument 2, which is declared to never be null

To reproduce the issue, compile podofo with UBSAN "-fsanitize=undefined",
then execute: podofoimgextract $POC OUTPUT_DIR

The POC is attached.

Attachment: podofo_0-9-5_podofoimgextract_undefined-behavior_PdfMemoryOutputStream-Write.pdf
Description: Adobe PDF document

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