Some crashes occur when fuzzing rtf2html.

[yangfar]

Version

hjsz@hjsz:~/rtf2html$ ./rtf2html -v rtf2html version 0.2.0

Command

./rtf2html

Crash output

Crash1: heap-buffer-overflow

================================================================= ==3467450==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x63000000f401 at pc 0x0000004e744e bp 0x7ffc3c277010 sp 0x7ffc3c277008 READ of size 1 at 0x63000000f401 thread T0 #0 0x4e744d in void skip_group<__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char, std::char_traits, std::allocator > > >(__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char, std::char_traits, std::allocator > >&) /home/hjsz/rtf2html/./rtf_tools.h:27:15 #1 0x4db43c in main /home/hjsz/rtf2html/rtf2html.cpp:158:16 #2 0x7f7e99536082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 #3 0x41da0d in _start (/home/hjsz/rtf2html/rtf2html+0x41da0d) 0x63000000f401 is located 0 bytes to the right of 61441-byte region [0x630000000400,0x63000000f401) allocated by thread T0 here: #0 0x4c58bd in operator new(unsigned long) (/home/hjsz/rtf2html/rtf2html+0x4c58bd) #1 0x7f7e999e635d in std::__cxx11::basic_string<char, std::char_traits, std::allocator >::_M_mutate(unsigned long, unsigned long, char const*, unsigned long) (/lib/x86_64-linux-gnu/libstdc++.so.6+0x14335d) SUMMARY: AddressSanitizer: heap-buffer-overflow /home/hjsz/rtf2html/./rtf_tools.h:27:15 in void skip_group<__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char, std::char_traits, std::allocator > > >(__gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char, std::char_traits, std::allocator > >&) Shadow bytes around the buggy address: 0x0c607fff9e30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c607fff9e40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c607fff9e50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c607fff9e60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x0c607fff9e70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 =>0x0c607fff9e80:[01]fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c607fff9e90: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c607fff9ea0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c607fff9eb0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c607fff9ec0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa 0x0c607fff9ed0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa Shadow byte legend (one shadow byte represents 8 application bytes): Addressable: 00 Partially addressable: 01 02 03 04 05 06 07 Heap left redzone: fa Freed heap region: fd Stack left redzone: f1 Stack mid redzone: f2 Stack right redzone: f3 Stack after return: f5 Stack use after scope: f8 Global redzone: f9 Global init order: f6 Poisoned by user: f7 Container overflow: fc Array cookie: ac Intra object redzone: bb ASan internal: fe Left alloca redzone: ca Right alloca redzone: cb Shadow gap: cc ==3467450==ABORTING

Crash2 : SEGV on unknown address

================================================================= AddressSanitizer:DEADLYSIGNAL ==3472093==ERROR: AddressSanitizer: SEGV on unknown address (pc 0x0000004d2be7 bp 0x7ffcfb04e1d0 sp 0x7ffcfb04d080 T0) ==3472093==The signal is caused by a READ memory access. ==3472093==Hint: this fault was caused by a dereference of a high value address (see register values below). Dissassemble the provided pc to learn which register was used. #0 0x4d2be7 in formatting_options::operator=(formatting_options const&) /home/hjsz/rtf2html/./fmt_opts.h:96:19 #1 0x4db0f9 in main /home/hjsz/rtf2html/rtf2html.cpp:572:21 #2 0x7f2556f85082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 #3 0x41da0d in _start (/home/hjsz/rtf2html/rtf2html+0x41da0d)

AddressSanitizer can not provide additional info. SUMMARY: AddressSanitizer: SEGV /home/hjsz/rtf2html/./fmt_opts.h:96:19 in formatting_options::operator=(formatting_options const&) ==3472093==ABORTING

POC

POC.zip

Report of Information Security Laboratory of Ocean University of China @OUC_ISLOUC @OUC_Blue_Whale