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Heap out of bounds read in function pdi #2852

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hannob opened this issue Jun 28, 2015 · 0 comments
Closed

Heap out of bounds read in function pdi #2852

hannob opened this issue Jun 28, 2015 · 0 comments

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@hannob
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hannob commented Jun 28, 2015

Script:
https://crashes.fuzzing-project.org/radare2-script-oob-heap-read-pdi
Contains "pid 0"

Address Sanitizer:

==6296==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x611000009ec0 at pc 0x7fc287c8b206 bp 0x7ffd45dc7080 sp 0x7ffd45dc7070
READ of size 1 at 0x611000009ec0 thread T0
    #0 0x7fc287c8b205 in pdi /f/radare2/radare2/libr/core/cmd_print.c:959
    #1 0x7fc287cca171 in cmd_print /f/radare2/radare2/libr/core/cmd_print.c:1821
    #2 0x7fc287d34a0d in r_core_cmd_subst_i /f/radare2/radare2/libr/core/cmd.c:1595
    #3 0x7fc287c97499 in r_core_cmd_subst /f/radare2/radare2/libr/core/cmd.c:1081
    #4 0x7fc287c98633 in r_core_cmd /f/radare2/radare2/libr/core/cmd.c:1943
    #5 0x7fc287c9b4ec in r_core_cmd_lines /f/radare2/radare2/libr/core/cmd.c:1994
    #6 0x7fc287c9b6f4 in r_core_cmd_file /f/radare2/radare2/libr/core/cmd.c:2006
    #7 0x7fc287c9e496 in r_core_run_script /f/radare2/radare2/libr/core/cmd.c:373
    #8 0x4054e3 in main /f/radare2/radare2/binr/radare2/radare2.c:729
    #9 0x7fc2821f9f9f in __libc_start_main (/lib64/libc.so.6+0x1ff9f)
    #10 0x409fae (/mnt/ram/r2/radare2+0x409fae)

0x611000009ec0 is located 0 bytes to the right of 256-byte region [0x611000009dc0,0x611000009ec0)
allocated by thread T0 here:
    #0 0x7fc2883c66f7 in malloc (/usr/lib/gcc/x86_64-pc-linux-gnu/4.9.2/libasan.so.1+0x576f7)
    #1 0x7fc287c44db9 in r_core_init /f/radare2/radare2/libr/core/core.c:859

SUMMARY: AddressSanitizer: heap-buffer-overflow /f/radare2/radare2/libr/core/cmd_print.c:959 pdi
Shadow bytes around the buggy address:
  0x0c227fff9380: fd fd fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c227fff9390: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c227fff93a0: fd fd fd fd fd fd fd fd fd fd fa fa fa fa fa fa
  0x0c227fff93b0: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
  0x0c227fff93c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c227fff93d0: 00 00 00 00 00 00 00 00[fa]fa fa fa fa fa fa fa
  0x0c227fff93e0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
  0x0c227fff93f0: fd fd fd fd fd fd fd fd fd fd fa fa fa fa fa fa
  0x0c227fff9400: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c227fff9410: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c227fff9420: 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
  Heap right redzone:      fb
  Freed heap region:       fd
  Stack left redzone:      f1
  Stack mid redzone:       f2
  Stack right redzone:     f3
  Stack partial redzone:   f4
  Stack after return:      f5
  Stack use after scope:   f8
  Global redzone:          f9
  Global init order:       f6
  Poisoned by user:        f7
  Contiguous container OOB:fc
  ASan internal:           fe
==6296==ABORTING
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