https://sourceware.org/bugzilla/show_bug.cgi?id=23529
Bug ID: 23529
Summary: heap-buffer-overflow in eu-readelf
Product: elfutils
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: backends
Assignee: unassigned at sourceware dot org
Reporter: wcventure at 126 dot com
CC: elfutils-devel at sourceware dot org
Target Milestone: ---
Created attachment 11186
--> https://sourceware.org/bugzilla/attachment.cgi?id=11186&action=edit
crash-seed-buffer-over-flow
when executing "./eu-readelf -aAdehIlnrsSVcp -w @@", AddressSanitizer catch a
heap-buffer-overflow carsh.
==29317==ERROR: AddressSanitizer: heap-buffer-overflow on address
0x60600000c536 at pc 0x7f5bdaf2bfb0 bp 0x7ffff669ef70 sp 0x7ffff669ef60
READ of size 1 at 0x60600000c536 thread T0
#0 0x7f5bdaf2bfaf in __libdw_get_uleb128_unchecked
/mnt/d/Project/elfutils/libdw/memory-access.h:97
#1 0x7f5bdaf2bfaf in dwarf_getabbrevattr_data
/mnt/d/Project/elfutils/libdw/dwarf_getabbrevattr.c:60
#2 0x42f8c2 in print_debug_abbrev_section
/mnt/d/Project/elfutils/src/readelf.c:5045
#3 0x45313f in print_debug /mnt/d/Project/elfutils/src/readelf.c:11143
#4 0x45b07b in process_elf_file /mnt/d/Project/elfutils/src/readelf.c:996
#5 0x462344 in process_dwflmod /mnt/d/Project/elfutils/src/readelf.c:760
#6 0x7f5bdafcc410 in dwfl_getmodules
/mnt/d/Project/elfutils/libdwfl/dwfl_getmodules.c:86
#7 0x40f013 in process_file /mnt/d/Project/elfutils/src/readelf.c:868
#8 0x405614 in main /mnt/d/Project/elfutils/src/readelf.c:350
#9 0x7f5bda65082f in __libc_start_main
(/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
#10 0x406118 in _start
(/mnt/d/Project/elfutils/build/bin/eu-readelf+0x406118)
0x60600000c536 is located 0 bytes to the right of 54-byte region
[0x60600000c500,0x60600000c536)
allocated by thread T0 here:
#0 0x7f5bdb328602 in malloc
(/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602)
#1 0x7f5bdac62680 in convert_data
/mnt/d/Project/elfutils/libelf/elf_getdata.c:164
#2 0x7f5bdac62680 in __libelf_set_data_list_rdlock
/mnt/d/Project/elfutils/libelf/elf_getdata.c:431
SUMMARY: AddressSanitizer: heap-buffer-overflow
/mnt/d/Project/elfutils/libdw/memory-access.h:97 __libdw_get_uleb128_unchecked
Shadow bytes around the buggy address:
0x0c0c7fff9850: fd fd fd fa fa fa fa fa fd fd fd fd fd fd fd fa
0x0c0c7fff9860: fa fa fa fa fd fd fd fd fd fd fd fa fa fa fa fa
0x0c0c7fff9870: fd fd fd fd fd fd fd fa fa fa fa fa fd fd fd fd
0x0c0c7fff9880: fd fd fd fa fa fa fa fa fd fd fd fd fd fd fd fa
0x0c0c7fff9890: fa fa fa fa 00 00 00 00 00 00 00 fa fa fa fa fa
=>0x0c0c7fff98a0: 00 00 00 00 00 00[06]fa fa fa fa fa fd fd fd fd
0x0c0c7fff98b0: fd fd fd fa fa fa fa fa fd fd fd fd fd fd fd fa
0x0c0c7fff98c0: fa fa fa fa fd fd fd fd fd fd fd fa fa fa fa fa
0x0c0c7fff98d0: fd fd fd fd fd fd fd fa fa fa fa fa fd fd fd fd
0x0c0c7fff98e0: fd fd fd fa fa fa fa fa fd fd fd fd fd fd fd fa
0x0c0c7fff98f0: fa fa fa fa fd fd fd fd fd fd fd 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
Container overflow: fc
Array cookie: ac
Intra object redzone: bb
ASan internal: fe
==29317==ABORTING
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