https://sourceware.org/bugzilla/show_bug.cgi?id=24910
Bug ID: 24910
Summary: buffer overflow in byte_get_little_endian
Product: binutils
Version: 2.33 (HEAD)
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: featherrain26 at gmail dot com
Target Milestone: ---
Created attachment 11950
--> https://sourceware.org/bugzilla/attachment.cgi?id=11950&action=edit
PoC input
Hi, there.
There is a different heap-buffer-overflow in byte_get_little_endian in
elfcomm.c.
The environment and complie flag are:
Distributor ID: Ubuntu
Description: Ubuntu 16.04.6 LTS
Release: 16.04
Codename: xenial
gcc: 5.4.0
CFLAG="-g -O0 -m32 -fsanitize=address,leak,undefined"
The reproduce command is:
readelf -agteSdcWw --dyn-syms -D poc
This is trace reported by ASAN:
==32599==ERROR: AddressSanitizer: heap-buffer-overflow on address 0xf4c00d74 at
pc 0x0819a687 bp 0xffff7cb8 sp 0xffff7ca8
READ of size 4 at 0xf4c00d74 thread T0
#0 0x819a686 in byte_get_little_endian
/mnt/data/playground/binutils-2.32-a/binutils/elfcomm.c:151
#1 0x8085112 in print_stapsdt_note
/mnt/data/playground/binutils-2.32-a/binutils/readelf.c:17864
#2 0x8085112 in process_note
/mnt/data/playground/binutils-2.32-a/binutils/readelf.c:18576
#3 0x8085112 in process_notes_at
/mnt/data/playground/binutils-2.32-a/binutils/readelf.c:18762
#4 0x80f515e in process_notes_at
/mnt/data/playground/binutils-2.32-a/binutils/readelf.c:18898
#5 0x80f515e in process_note_sections
/mnt/data/playground/binutils-2.32-a/binutils/readelf.c:18897
#6 0x80f515e in process_notes
/mnt/data/playground/binutils-2.32-a/binutils/readelf.c:18933
#7 0x80f515e in process_object
/mnt/data/playground/binutils-2.32-a/binutils/readelf.c:19296
#8 0x804ba13 in process_file
/mnt/data/playground/binutils-2.32-a/binutils/readelf.c:19708
#9 0x804ba13 in main
/mnt/data/playground/binutils-2.32-a/binutils/readelf.c:19767
#10 0xf6fc1636 in __libc_start_main (/lib/i386-linux-gnu/libc.so.6+0x18636)
#11 0x804c6eb
(/mnt/data/playground/binutils-2.32-a/binutils/readelf+0x804c6eb)
0xf4c00d75 is located 0 bytes to the right of 37-byte region
[0xf4c00d50,0xf4c00d75)
allocated by thread T0 here:
#0 0xf71f5dee in malloc (/usr/lib32/libasan.so.2+0x96dee)
#1 0x806f66e in get_data
/mnt/data/playground/binutils-2.32-a/binutils/readelf.c:426
#2 0x806f66e in get_section_contents
/mnt/data/playground/binutils-2.32-a/binutils/readelf.c:13350
#3 0x823bdbf
(/mnt/data/playground/binutils-2.32-a/binutils/readelf+0x823bdbf)
SUMMARY: AddressSanitizer: heap-buffer-overflow
/mnt/data/playground/binutils-2.32-a/binutils/elfcomm.c:151
byte_get_little_endian
Shadow bytes around the buggy address:
0x3e980150: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x3e980160: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x3e980170: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x3e980180: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x3e980190: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x3e9801a0: fa fa fa fa fa fa fa fa fa fa 00 00 00 00[05]fa
0x3e9801b0: fa fa fd fd fd fd fd fa fa fa fd fd fd fd fd fd
0x3e9801c0: fa fa 00 00 00 00 04 fa fa fa 00 00 00 00 04 fa
0x3e9801d0: fa fa 00 00 00 00 04 fa fa fa 00 00 00 00 04 fa
0x3e9801e0: fa fa 00 00 00 00 04 fa fa fa 00 00 00 00 04 fa
0x3e9801f0: fa fa 00 00 00 00 00 04 fa fa 00 00 00 00 00 00
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
==32599==ABORTING
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