https://sourceware.org/bugzilla/show_bug.cgi?id=27854
Bug ID: 27854
Summary: heap-buffer-overflow on objdump -D
Product: binutils
Version: 2.37 (HEAD)
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: shaohua.li at inf dot ethz.ch
Target Milestone: ---
Created attachment 13441
--> https://sourceware.org/bugzilla/attachment.cgi?id=13441&action=edit
poc
Hi there,
I found a heap-buffer-overflow with AddressSanitizer (with compile flag
-fsanitize=address) in `objdump -D`. However, the poc won't crash normally
compiled binaries. I have attached the poc that triggered the
heap-buffer-overflow.
Compiler: gcc11
Reproduce: `objdump -D poc`
AddressSanitizer output:
==67162==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x61b0000015f9 at pc 0x0000006ce596 bp 0x7ffc1b9cd070 sp 0x7ffc1b9cd068
READ of size 1 at 0x61b0000015f9 thread T0
#0 0x6ce595 in _print_instrs
/data/clean/binutils-gdb-asan/opcodes/nfp-dis.c:2841:25
#1 0x6ce595 in print_insn_nfp
/data/clean/binutils-gdb-asan/opcodes/nfp-dis.c:2959:9
#2 0x4d7b75 in disassemble_bytes
/data/clean/binutils-gdb-asan/binutils/./objdump.c:2814:20
#3 0x4d7b75 in disassemble_section
/data/clean/binutils-gdb-asan/binutils/./objdump.c:3396:4
#4 0x84694b in bfd_map_over_sections
/data/clean/binutils-gdb-asan/bfd/section.c:1377:5
#5 0x4cd111 in disassemble_data
/data/clean/binutils-gdb-asan/binutils/./objdump.c:3540:3
#6 0x4cd111 in dump_bfd
/data/clean/binutils-gdb-asan/binutils/./objdump.c:4939:5
#7 0x4cab03 in display_object_bfd
/data/clean/binutils-gdb-asan/binutils/./objdump.c
#8 0x4cab03 in display_any_bfd
/data/clean/binutils-gdb-asan/binutils/./objdump.c:5091:5
#9 0x4c9fb1 in display_file
/data/clean/binutils-gdb-asan/binutils/./objdump.c:5112:3
#10 0x4c9fb1 in main
/data/clean/binutils-gdb-asan/binutils/./objdump.c:5462:6
#11 0x7fb4e46df0b2 in __libc_start_main
/build/glibc-eX1tMB/glibc-2.31/csu/../csu/libc-start.c:308:16
#12 0x41c57d in _start
(/data/clean/binutils-gdb-asan/binutils/objdump+0x41c57d)
0x61b0000015f9 is located 3961 bytes to the right of 1536-byte region
[0x61b000000080,0x61b000000680)
allocated by thread T0 here:
#0 0x497952 in calloc
(/data/clean/binutils-gdb-asan/binutils/objdump+0x497952)
#1 0x6cafe7 in init_nfp_priv
/data/clean/binutils-gdb-asan/opcodes/nfp-dis.c:2768:10
#2 0x6cafe7 in _print_instrs
/data/clean/binutils-gdb-asan/opcodes/nfp-dis.c:2795:25
#3 0x6cafe7 in print_insn_nfp
/data/clean/binutils-gdb-asan/opcodes/nfp-dis.c:2959:9
#4 0x4d7b75 in disassemble_bytes
/data/clean/binutils-gdb-asan/binutils/./objdump.c:2814:20
#5 0x4d7b75 in disassemble_section
/data/clean/binutils-gdb-asan/binutils/./objdump.c:3396:4
#6 0x84694b in bfd_map_over_sections
/data/clean/binutils-gdb-asan/bfd/section.c:1377:5
SUMMARY: AddressSanitizer: heap-buffer-overflow
/data/clean/binutils-gdb-asan/opcodes/nfp-dis.c:2841:25 in _print_instrs
Shadow bytes around the buggy address:
0x0c367fff8260: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c367fff8270: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c367fff8280: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c367fff8290: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c367fff82a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c367fff82b0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa[fa]
0x0c367fff82c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c367fff82d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c367fff82e0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c367fff82f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c367fff8300: 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
==67162==ABORTING
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