[Bug binutils/24246] New: readelf: heap buffer overflow in print_stapsdt_note

[spinpx at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=24246

            Bug ID: 24246
           Summary: readelf: heap buffer overflow in print_stapsdt_note
           Product: binutils
           Version: 2.33 (HEAD)
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: spinpx at gmail dot com
  Target Milestone: ---

Created attachment 11626
  --> https://sourceware.org/bugzilla/attachment.cgi?id=11626&action=edit
Heap buffer overflow input

- Intel Xeon Gold 5118 processors and 256 GB memory
- Linux n18-065-139 4.19.0-1-amd64 #1 SMP Debian 4.19.12-1 (2018-12-22) x86_64
GNU/Linux
- clang version 4.0.0 (tags/RELEASE_400/final)
- version: commit c72e75a64030b0f6535a80481f37968ad55c333a (Feb 19 2019)
- run: readelf -a input_file


ELF Header:
  Magic:   7f 45 4c 46 01 01 01 f4 00 00 00 00 00 00 00 00 
  Class:                             ELF32
  Data:                              2's complement, little endian
  Version:                           1 (current)
  OS/ABI:                            <unknown: f4>
  ABI Version:                       0
  Type:                              CORE (Core file)
  Machine:                           <unknown>: 0x7303
  Version:                           0x73706174
  Entry point address:               0x8047464
  Start of program headers:          52 (bytes into file)
  Start of section headers:          164 (bytes into file)
  Flags:                             0x0
  Size of this header:               52 (bytes)
  Size of program headers:           32 (bytes)
  Number of program headers:         6
  Size of section headers:           0 (bytes)
  Number of section headers:         4096
  Section header string table index: 0
readelf: Error: Section headers are not available!
=================================================================
==661418==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x61200000014d at pc 0x00000042f615 bp 0x7ffe1629dfd0 sp 0x7ffe1629d778
READ of size 1 at 0x61200000014d thread T0
    #0 0x42f614 in __interceptor_strlen
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:284:5
    #1 0x5707b5 in print_stapsdt_note
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/readelf.c:17879:11
    #2 0x56c175 in process_note
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/readelf.c:18583:12
    #3 0x56a944 in process_notes_at
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/readelf.c:18769:13
    #4 0x5693a9 in process_corefile_note_segments
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/readelf.c:18799:8
    #5 0x524202 in process_notes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/readelf.c:18944:12
    #6 0x505c9d in process_object
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/readelf.c:19303:9
    #7 0x4f547d in process_file
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/readelf.c:19715:13
    #8 0x4f3ec8 in main
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/readelf.c:19774:11
    #9 0x7ff3f4b7809a in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2409a)
    #10 0x41d4b9 in _start
(/mnt/raid/user/chenpeng/FuzzingBench/build/asan/install/bin/readelf+0x41d4b9)

0x61200000014d is located 0 bytes to the right of 269-byte region
[0x612000000040,0x61200000014d)
allocated by thread T0 here:
    #0 0x4c41ac in malloc
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/asan/asan_malloc_linux.cc:66:3
    #1 0x4f179f in get_data
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/readelf.c:426:9
    #2 0x56965e in process_notes_at
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/readelf.c:18635:36
    #3 0x5693a9 in process_corefile_note_segments
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/readelf.c:18799:8
    #4 0x524202 in process_notes
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/readelf.c:18944:12
    #5 0x505c9d in process_object
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/readelf.c:19303:9
    #6 0x4f547d in process_file
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/readelf.c:19715:13
    #7 0x4f3ec8 in main
/mnt/raid/user/chenpeng/FuzzingBench/binutils/binutils-gdb/binutils/readelf.c:19774:11
    #8 0x7ff3f4b7809a in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2409a)

SUMMARY: AddressSanitizer: heap-buffer-overflow
/scratch/llvm/clang-4/xenial/final/llvm.src/projects/compiler-rt/lib/asan/../sanitizer_common/sanitizer_common_interceptors.inc:284:5
in __interceptor_strlen
Shadow bytes around the buggy address:
  0x0c247fff7fd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c247fff7fe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c247fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
  0x0c247fff8000: fa fa fa fa fa fa fa fa 00 00 00 00 00 00 00 00
  0x0c247fff8010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c247fff8020: 00 00 00 00 00 00 00 00 00[05]fa fa fa fa fa fa
  0x0c247fff8030: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c247fff8040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c247fff8050: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c247fff8060: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c247fff8070: 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
==661418==ABORTING

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