https://sourceware.org/bugzilla/show_bug.cgi?id=28415
Bug ID: 28415
Summary: stack-buffer-overflow in objdump at disassemble_bytes
(objdump.c:2905)
Product: binutils
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: irfanariq at kaist dot ac.kr
Target Milestone: ---
Created attachment 13697
--> https://sourceware.org/bugzilla/attachment.cgi?id=13697&action=edit
poc and full stack trace
Hello,
We are currently working on fuzz testing feature, and we found a
**stack-buffer-overflow** error on `objdump`.
The stack traces are as follow:
```
==30107==ERROR: AddressSanitizer: stack-buffer-overflow on address
0x7ffc4a702a32 at pc 0x563009ade296 bp 0x7ffc4a702830 sp 0x7ffc4a702820
WRITE of size 1 at 0x7ffc4a702a32 thread T0
#0 0x563009ade295 in disassemble_bytes objdump.c:2905
#1 0x563009ae1342 in disassemble_section objdump.c:3455
#2 0x563009fac3c0 in bfd_map_over_sections
.../binutils-git/bfd/section.c:1383
#3 0x563009ae2293 in disassemble_data objdump.c:3599
#4 0x563009ae96cc in dump_bfd objdump.c:5006
#5 0x563009ae9994 in display_object_bfd objdump.c:5068
#6 0x563009ae9d2f in display_any_bfd objdump.c:5158
#7 0x563009ae9da6 in display_file objdump.c:5179
#8 0x563009aeb15a in main objdump.c:5529
```
The full stack trace is attached.
**Step to reproduce**
We configured `objdump` using
`CFLAGS="-g -O0 -fsanitize=address" ./configure --prefix=$(pwd)/
--disable-shared --enable-targets=all`
and build it using `make -j 10`, and run it with:
```
./objdump --source addr16 -z booke -t ppcps -Wf intel-mnemonic suffix <attached
file> -Ttext -x
```
The input file is attached.
**Environment**
- OS: Ubuntu 18.04.5 LTS
- GCC version: gcc 7.5.0
- binutils version: commit (98ca73a) of master branch on sourceware git
([link](https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=98ca73afe51e1e921915c37f242c88d4d445841c))
Thank you.
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