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[Bug binutils/24039] integer overflow in libiberty, heap overflow will b
From: |
tfx_sec at hotmail dot com |
Subject: |
[Bug binutils/24039] integer overflow in libiberty, heap overflow will be triggered |
Date: |
Sat, 05 Jan 2019 01:50:44 +0000 |
https://sourceware.org/bugzilla/show_bug.cgi?id=24039
--- Comment #1 from mhsec <tfx_sec at hotmail dot com> ---
I use latest binutils with debug info.
crash output show as follow.
binutils/nm-new -C POC
=================================================================
==9029==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xf3bfea80 at
pc 0x083ba887 bp 0xffabcac8 sp 0xffabcac0
WRITE of size 4 at 0xf3bfea80 thread T0
#0 0x83ba886 in demangle_template
./binutils-gdb/libiberty/./cplus-dem.c:2249:23
#1 0x83b8c2e in demangle_signature
./binutils-gdb/libiberty/./cplus-dem.c:1709:18
#2 0x83b62da in internal_cplus_demangle
./binutils-gdb/libiberty/./cplus-dem.c:1258:14
#3 0x83b5143 in cplus_demangle ./binutils-gdb/libiberty/./cplus-dem.c:919:9
#4 0x815d092 in bfd_demangle ./binutils-gdb/bfd/bfd.c:2254:9
#5 0x81460a0 in print_symname ./binutils-gdb/binutils/nm.c:423:19
#6 0x8145035 in print_symbol_info_bsd ./binutils-gdb/binutils/nm.c:1565:3
#7 0x8149d87 in print_symbol ./binutils-gdb/binutils/nm.c:903:3
#8 0x8148828 in print_symbols ./binutils-gdb/binutils/nm.c:1102:7
#9 0x8146fdb in display_rel_file ./binutils-gdb/binutils/nm.c:1215:5
#10 0x8144a11 in display_file ./binutils-gdb/binutils/nm.c:1335:7
#11 0x814424f in main ./binutils-gdb/binutils/nm.c:1816:12
#12 0xf7d3f636 in __libc_start_main (/lib/i386-linux-gnu/libc.so.6+0x18636)
#13 0x806be08 in _start (./binutils-gdb/binutils/nm-new+0x806be08)
0xf3bfea80 is located 0 bytes to the right of 251581056-byte region
[0xe4c11800,0xf3bfea80)
allocated by thread T0 here:
#0 0x8112215 in malloc asan_malloc_linux.cc:146:3
#1 0x83e6659 in xmalloc ./binutils-gdb/libiberty/./xmalloc.c:147:12
#2 0x83b8c2e in demangle_signature
./binutils-gdb/libiberty/./cplus-dem.c:1709:18
#3 0x83b62da in internal_cplus_demangle
./binutils-gdb/libiberty/./cplus-dem.c:1258:14
#4 0x83b5143 in cplus_demangle ./binutils-gdb/libiberty/./cplus-dem.c:919:9
#5 0x815d092 in bfd_demangle ./binutils-gdb/bfd/bfd.c:2254:9
SUMMARY: AddressSanitizer: heap-buffer-overflow
./binutils-gdb/libiberty/./cplus-dem.c:2249:23 in demangle_template
Shadow bytes around the buggy address:
0x3e77fd00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x3e77fd10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x3e77fd20: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x3e77fd30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x3e77fd40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x3e77fd50:[fa]fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x3e77fd60: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x3e77fd70: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x3e77fd80: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x3e77fd90: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x3e77fda0: 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
==9029==ABORTING
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