[Bug binutils/30642] New: AddressSanitizer: heap-buffer-overflow /home/root/sp/Dataset/Binutils/binutils_aflpp/bfd/libbfd.c:784:8 in bfd_getl64

[sihan2021 at iscas dot ac.cn]

https://sourceware.org/bugzilla/show_bug.cgi?id=30642

            Bug ID: 30642
           Summary: AddressSanitizer: heap-buffer-overflow
                    /home/root/sp/Dataset/Binutils/binutils_aflpp/bfd/libb
                    fd.c:784:8 in bfd_getl64
           Product: binutils
           Version: 2.39
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: sihan2021 at iscas dot ac.cn
  Target Milestone: ---

Created attachment 14973
  --> https://sourceware.org/bugzilla/attachment.cgi?id=14973&action=edit
crash seed

Hello Binutils developers,
We recently conducted a fuzzing test on objdump and discovered a
heap-buffer-overflow bug. We would like to provide a detailed description of
the bug and seek your assistance in addressing it.

version:
objdump: 2.39
gcc:gcc version 9.4.0 (Ubuntu 9.4.0-1ubuntu1~20.04.1)
ubuntu: 20.04

command to reproduce:
objdump -r hbo_1
hbo_1 is attached to this report.


ASAN report:
=================================================================
==2663251==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x6030000001af at pc 0x0000007766c5 bp 0x7ffe098c1300 sp 0x7ffe098c12f8
READ of size 1 at 0x6030000001af thread T0
    #0 0x7766c4 in bfd_getl64
/home/root/sp/Dataset/Binutils/binutils_aflpp/bfd/libbfd.c:784:8
    #1 0x842b3d in bfd_elf64_swap_reloc_in
/home/root/sp/Dataset/Binutils/binutils_aflpp/bfd/./elfcode.h:421:17
    #2 0x853f92 in elf_slurp_reloc_table_from_section
/home/root/sp/Dataset/Binutils/binutils_aflpp/bfd/./elfcode.h:1499:2
    #3 0x85365e in bfd_elf64_slurp_reloc_table
/home/root/sp/Dataset/Binutils/binutils_aflpp/bfd/./elfcode.h:1616:11
    #4 0x8b48f4 in _bfd_elf_canonicalize_reloc
/home/root/sp/Dataset/Binutils/binutils_aflpp/bfd/elf.c:8687:9
    #5 0x749113 in bfd_canonicalize_reloc
/home/root/sp/Dataset/Binutils/binutils_aflpp/bfd/bfd.c:1579:10
    #6 0x4e2c97 in dump_relocs_in_section
/home/root/sp/Dataset/Binutils/binutils_aflpp/binutils/./objdump.c:5087:18
    #7 0x78674f in bfd_map_over_sections
/home/root/sp/Dataset/Binutils/binutils_aflpp/bfd/section.c:1370:5
    #8 0x4db403 in dump_relocs
/home/root/sp/Dataset/Binutils/binutils_aflpp/binutils/./objdump.c:5111:3
    #9 0x4d67dd in dump_bfd
/home/root/sp/Dataset/Binutils/binutils_aflpp/binutils/./objdump.c:5352:2
    #10 0x4d487d in display_object_bfd
/home/root/sp/Dataset/Binutils/binutils_aflpp/binutils/./objdump.c:5421:7
    #11 0x4d4711 in display_any_bfd
/home/root/sp/Dataset/Binutils/binutils_aflpp/binutils/./objdump.c:5507:5
    #12 0x4d2af3 in display_file
/home/root/sp/Dataset/Binutils/binutils_aflpp/binutils/./objdump.c:5528:3
    #13 0x4d0942 in main
/home/root/sp/Dataset/Binutils/binutils_aflpp/binutils/./objdump.c:5920:6
    #14 0x7f5589c29082 in __libc_start_main
/build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16
    #15 0x41d60d in _start
(/home/root/sp/Fuzz/aflpp_fuzz/Binutils/document_group/stop-address_r/objdump_4/objdump+0x41d60d)

0x6030000001af is located 7 bytes to the right of 24-byte region
[0x603000000190,0x6030000001a8)
allocated by thread T0 here:
    #0 0x499dbd in __interceptor_malloc
(/home/root/sp/Fuzz/aflpp_fuzz/Binutils/document_group/stop-address_r/objdump_4/objdump+0x499dbd)
    #1 0x774907 in bfd_malloc
/home/root/sp/Dataset/Binutils/binutils_aflpp/bfd/libbfd.c:289:9
    #2 0x85289a in _bfd_malloc_and_read
/home/root/sp/Dataset/Binutils/binutils_aflpp/bfd/./libbfd.h:955:9
    #3 0x853c84 in elf_slurp_reloc_table_from_section
/home/root/sp/Dataset/Binutils/binutils_aflpp/bfd/./elfcode.h:1474:15
    #4 0x85365e in bfd_elf64_slurp_reloc_table
/home/root/sp/Dataset/Binutils/binutils_aflpp/bfd/./elfcode.h:1616:11
    #5 0x8b48f4 in _bfd_elf_canonicalize_reloc
/home/root/sp/Dataset/Binutils/binutils_aflpp/bfd/elf.c:8687:9
    #6 0x749113 in bfd_canonicalize_reloc
/home/root/sp/Dataset/Binutils/binutils_aflpp/bfd/bfd.c:1579:10
    #7 0x4e2c97 in dump_relocs_in_section
/home/root/sp/Dataset/Binutils/binutils_aflpp/binutils/./objdump.c:5087:18
    #8 0x78674f in bfd_map_over_sections
/home/root/sp/Dataset/Binutils/binutils_aflpp/bfd/section.c:1370:5
    #9 0x4db403 in dump_relocs
/home/root/sp/Dataset/Binutils/binutils_aflpp/binutils/./objdump.c:5111:3
    #10 0x4d67dd in dump_bfd
/home/root/sp/Dataset/Binutils/binutils_aflpp/binutils/./objdump.c:5352:2
    #11 0x4d487d in display_object_bfd
/home/root/sp/Dataset/Binutils/binutils_aflpp/binutils/./objdump.c:5421:7
    #12 0x4d4711 in display_any_bfd
/home/root/sp/Dataset/Binutils/binutils_aflpp/binutils/./objdump.c:5507:5
    #13 0x4d2af3 in display_file
/home/root/sp/Dataset/Binutils/binutils_aflpp/binutils/./objdump.c:5528:3
    #14 0x4d0942 in main
/home/root/sp/Dataset/Binutils/binutils_aflpp/binutils/./objdump.c:5920:6
    #15 0x7f5589c29082 in __libc_start_main
/build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16

SUMMARY: AddressSanitizer: heap-buffer-overflow
/home/root/sp/Dataset/Binutils/binutils_aflpp/bfd/libbfd.c:784:8 in bfd_getl64
Shadow bytes around the buggy address:
  0x0c067fff7fe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c067fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c067fff8000: fa fa 00 00 00 00 fa fa 00 00 00 fa fa fa fd fd
  0x0c067fff8010: fd fa fa fa fd fd fd fa fa fa 00 00 00 fa fa fa
  0x0c067fff8020: fd fd fd fd fa fa fd fd fd fa fa fa 00 00 00 00
=>0x0c067fff8030: fa fa 00 00 00[fa]fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8050: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8060: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8070: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c067fff8080: 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
==2663251==ABORTING

Thank you for your attention and support.
Best regards,
Michael Zhang.

-- 
You are receiving this mail because:
You are on the CC list for the bug.