https://sourceware.org/bugzilla/show_bug.cgi?id=21616
Bug ID: 21616
Summary: heap-buffer-overflow in _bfd_vms_save_sized_string
Product: binutils
Version: 2.29 (HEAD)
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: aadamski at quarkslab dot com
Target Milestone: ---
Hello there,
I have been fuzzing objdump with American Fuzzy Lop + ASAN/UBSAN.
Please find attached the minimized file causing the issue ("Input") and the
ASAN report log ("Output"). Below is the reduced stacktrace with links to the
corresponding source lines on a GitHub mirror.
The configuration settings used were `--enable-targets=all --disable-shared`.
The compilation flags used were `-g -O2 -fno-omit-frame-pointer
-fsanitize=address -fno-sanitize-recover=all`. The command used was `objdump
-afpxDSsgetTrR <file>`.
Let me know if there is any additional information I can provide.
--
Input: fa09ac606bb4cd416ae450aaae6e461f.e47228776f6debc802e467ef047ee111.min
Output: fa09ac606bb4cd416ae450aaae6e461f.e47228776f6debc802e467ef047ee111.txt
Error in "_bfd_vms_save_sized_string": heap-buffer-overflow
in _bfd_vms_save_sized_string at bfd/vms-misc.c:148
(see
https://github.com/bminor/binutils-gdb/blob/291e62953900e0f4998224127bc56239e421cda9/bfd/vms-misc.c#L148)
in _bfd_vms_save_counted_string at bfd/vms-misc.c:162
(see
https://github.com/bminor/binutils-gdb/blob/291e62953900e0f4998224127bc56239e421cda9/bfd/vms-misc.c#L162)
in _bfd_vms_slurp_egsd at bfd/vms-alpha.c:1167
(see
https://github.com/bminor/binutils-gdb/blob/291e62953900e0f4998224127bc56239e421cda9/bfd/vms-alpha.c#L1167)
in _bfd_vms_slurp_object_records at bfd/vms-alpha.c:2431
(see
https://github.com/bminor/binutils-gdb/blob/291e62953900e0f4998224127bc56239e421cda9/bfd/vms-alpha.c#L2431)
in alpha_vms_object_p at bfd/vms-alpha.c:2615
(see
https://github.com/bminor/binutils-gdb/blob/291e62953900e0f4998224127bc56239e421cda9/bfd/vms-alpha.c#L2615)
in bfd_check_format_matches at bfd/format.c:311
(see
https://github.com/bminor/binutils-gdb/blob/291e62953900e0f4998224127bc56239e421cda9/bfd/format.c#L311)
in display_object_bfd at binutils/objdump.c:3605
(see
https://github.com/bminor/binutils-gdb/blob/291e62953900e0f4998224127bc56239e421cda9/binutils/objdump.c#L3605)
in display_any_bfd at binutils/objdump.c:3696
(see
https://github.com/bminor/binutils-gdb/blob/291e62953900e0f4998224127bc56239e421cda9/binutils/objdump.c#L3696)
in display_file at binutils/objdump.c:3717
(see
https://github.com/bminor/binutils-gdb/blob/291e62953900e0f4998224127bc56239e421cda9/binutils/objdump.c#L3717)
in main at binutils/objdump.c:4019
(see
https://github.com/bminor/binutils-gdb/blob/291e62953900e0f4998224127bc56239e421cda9/binutils/objdump.c#L4019)
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