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