https://sourceware.org/bugzilla/show_bug.cgi?id=28273
Bug ID: 28273
Summary: [strip] heap-use-after-free in 'group_signature'
Product: binutils
Version: 2.30
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: tricker51449 at gmail dot com
Target Milestone: ---
Created attachment 13626
--> https://sourceware.org/bugzilla/attachment.cgi?id=13626&action=edit
crash file
Hello,
I detect the exception in strip via fuzzing testing.
C compiler: clang-8.0
Configuration command: CFLAGS="-fsanitize=address"
CXXFLAGS="-fsanitize=address" ./configure --disable-shared && make -j
Execution command: strip -o <files> <input>
The stack trace is shown below:
==70254==ERROR: AddressSanitizer: heap-use-after-free on address 0x606000001e98
at pc 0x00000050efa7 bp 0x7ffc15c7dc20 sp 0x7ffc15c7dc18
READ of size 8 at 0x606000001e98 thread T0
#0 0x50efa6 in group_signature (/binutils-2.30-asan/bin/strip+0x50efa6)
#1 0x50e2f9 in is_strip_section (/binutils-2.30-asan/bin/strip+0x50e2f9)
#2 0x504ce7 in setup_section (/binutils-2.30-asan/bin/strip+0x504ce7)
#3 0x5d62ae in bfd_map_over_sections
(/binutils-2.30-asan/bin/strip+0x5d62ae)
#4 0x500e58 in copy_object (/binutils-2.30-asan/bin/strip+0x500e58)
#5 0x4fcbe1 in copy_file (/binutils-2.30-asan/bin/strip+0x4fcbe1)
#6 0x4f759c in strip_main (/binutils-2.30-asan/bin/strip+0x4f759c)
#7 0x4f6a3d in main (/binutils-2.30-asan/bin/strip+0x4f6a3d)
#8 0x7f48208ecbf6 in __libc_start_main
/build/glibc-S9d2JN/glibc-2.27/csu/../csu/libc-start.c:310
#9 0x41b659 in _start (/binutils-2.30-asan/bin/strip+0x41b659)
0x606000001e98 is located 24 bytes inside of 49-byte region
[0x606000001e80,0x606000001eb1)
freed by thread T0 here:
#0 0x4c6c82 in __interceptor_free (/binutils-2.30-asan/bin/strip+0x4c6c82)
#1 0x7f482090018f in _nl_make_l10nflist
/build/glibc-S9d2JN/glibc-2.27/intl/../intl/l10nflist.c:237
previously allocated by thread T0 here:
#0 0x4c7003 in malloc (/binutils-2.30-asan/bin/strip+0x4c7003)
#1 0x7f48208ffe10 in _nl_make_l10nflist
/build/glibc-S9d2JN/glibc-2.27/intl/../intl/l10nflist.c:166
SUMMARY: AddressSanitizer: heap-use-after-free
(/binutils-2.30-asan/bin/strip+0x50efa6) in group_signature
Shadow bytes around the buggy address:
0x0c0c7fff8380: fd fd fd fd fa fa fa fa fd fd fd fd fd fd fd fa
0x0c0c7fff8390: fa fa fa fa fd fd fd fd fd fd fd fd fa fa fa fa
0x0c0c7fff83a0: fd fd fd fd fd fd fd fa fa fa fa fa fd fd fd fd
0x0c0c7fff83b0: fd fd fd fa fa fa fa fa fd fd fd fd fd fd fd fa
0x0c0c7fff83c0: fa fa fa fa 00 00 00 00 00 00 00 00 fa fa fa fa
=>0x0c0c7fff83d0: fd fd fd[fd]fd fd fd fa fa fa fa fa fa fa fa fa
0x0c0c7fff83e0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c0c7fff83f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c0c7fff8400: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c0c7fff8410: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c0c7fff8420: 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
==70254==ABORTING
Thanks & Best Regards
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