ed0e1e4d44
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3.3 KiB
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# Exploit Title: PDFunite Malformed pdf buffer overflow
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# Date: 17 April 2018
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# Exploit Author: Hamm3r.py
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# Vendor Homepage: https://launchpad.net/ubuntu/artful/+package/poppler-utils
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# Software Link: https://launchpad.net/ubuntu/+source/poppler/0.57.0-2ubuntu4.2
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# Version: 0.41.0
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# Tested on: Ubuntu
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# CVE :
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pdfunite is a part of poppler package in ubuntu. pdfunite is prone to a
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local bufferoverflow when a malformed pdf is used to unite with another
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pdf.
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Following is the gdb stack trace:
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Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
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Program received signal SIGSEGV, Segmentation fault.
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0x00007ffff7abf948 in XRef::getEntry(int, bool) () from
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/usr/lib/x86_64-linux-gnu/libpoppler.so.58
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#0 0x00007ffff7abf948 in XRef::getEntry(int, bool) () from
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/usr/lib/x86_64-linux-gnu/libpoppler.so.58
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#1 0x00007ffff7aa8867 in PDFDoc::markObject(Object*, XRef*, XRef*,
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unsigned int, int, int, std::set<Dict*, std::less<Dict*>,
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std::allocator<Dict*> >*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.58
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#2 0x00007ffff7aa85a3 in PDFDoc::markDictionnary(Dict*, XRef*, XRef*,
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unsigned int, int, int, std::set<Dict*, std::less<Dict*>,
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std::allocator<Dict*> >*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.58
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#3 0x00007ffff7aa884c in PDFDoc::markObject(Object*, XRef*, XRef*,
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unsigned int, int, int, std::set<Dict*, std::less<Dict*>,
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std::allocator<Dict*> >*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.58
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#4 0x00007ffff7aa8971 in PDFDoc::markObject(Object*, XRef*, XRef*,
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unsigned int, int, int, std::set<Dict*, std::less<Dict*>,
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std::allocator<Dict*> >*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.58
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#5 0x00007ffff7aa85a3 in PDFDoc::markDictionnary(Dict*, XRef*, XRef*,
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unsigned int, int, int, std::set<Dict*, std::less<Dict*>,
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std::allocator<Dict*> >*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.58
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#6 0x00007ffff7aa884c in PDFDoc::markObject(Object*, XRef*, XRef*,
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unsigned int, int, int, std::set<Dict*, std::less<Dict*>,
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std::allocator<Dict*> >*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.58
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#7 0x00007ffff7aa8971 in PDFDoc::markObject(Object*, XRef*, XRef*,
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unsigned int, int, int, std::set<Dict*, std::less<Dict*>,
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std::allocator<Dict*> >*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.58
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#8 0x00007ffff7aa85a3 in PDFDoc::markDictionnary(Dict*, XRef*, XRef*,
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unsigned int, int, int, std::set<Dict*, std::less<Dict*>,
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std::allocator<Dict*> >*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.58
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#9 0x00007ffff7aa884c in PDFDoc::markObject(Object*, XRef*, XRef*,
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unsigned int, int, int, std::set<Dict*, std::less<Dict*>,
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std::allocator<Dict*> >*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.58
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#10 0x00007ffff7aa8bae in PDFDoc::markPageObjects(Dict*, XRef*, XRef*,
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unsigned int, int, int, std::set<Dict*, std::less<Dict*>,
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std::allocator<Dict*> >*) () from /usr/lib/x86_64-linux-gnu/libpoppler.so.58
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#11 0x000000000040271a in ?? ()
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#12 0x00007ffff722d830 in __libc_start_main (main=0x401b20, argc=4,
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argv=0x7fffffffe0b8, init=<optimized out>, fini=<optimized out>,
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rtld_fini=<optimized out>, stack_end=0x7fffffffe0a8) at
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../csu/libc-start.c:291
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#13 0x0000000000403179 in ?? ()
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$ pdfunite -v
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pdfunite version 0.41.0
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#This issue is identified by Hamm3r.py, a general purpose fuzzer!
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Proof of Concept:
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https://github.com/offensive-security/exploitdb-bin-sploits/raw/master/bin-sploits/44490.zip |