#129 [podofo-0.9.7]Heap-Use-after-free in PoDoFo::PdfVecObjects::Clear()

[treebacker]

In PoDoFo::PdfVecObjects::Clear(), when run podofoencrypt with a crafted pdf, there is a Heap-Use-after-free .
In command line:

In gdb:

And the crafted file is attached .

[Mattia Rizzolo]

For cross-reference, to this issue has been assigned CVE-2021-30469