Open
Description
System info:
Ubuntu 16.04.6 LTS, X64, gcc 5.4.0, yasm (latest master 009450c)
I think it is probably a similar issue as #149
Compile Command:
$ ./autogen.sh
make distclean
CC=gcc CXX=g++ CFLAGS="-fsanitize=address -fno-omit-frame-pointer -g" CXXFLAGS="-fsanitize=address -fno-omit-frame-pointer -g" ./configure --prefix=$PWD/build --disable-shared
make -j
make install
Run Command:
$ yasm $POC
POC file:
https://github.com/Clingto/POC/blob/master/MSA/yasm/yasm-415-yasm_intnum_destroy-UAF
ASAN info:
yasm: file name already has no extension: output will be in `yasm.out'
=================================================================
==16102==ERROR: AddressSanitizer: heap-use-after-free on address 0x602000007098 at pc 0x7ffa04efacb7 bp 0x7fff5b056900 sp 0x7fff5b0568f0
READ of size 4 at 0x602000007098 thread T0
#0 0x7ffa04efacb6 in yasm_intnum_destroy test/yasm-uaf/SRC_asan/libyasm/intnum.c:415
#1 0x7ffa04ee7e69 in expr_delete_term test/yasm-uaf/SRC_asan/libyasm/expr.c:1017
#2 0x7ffa04ee7e69 in expr_simplify_identity test/yasm-uaf/SRC_asan/libyasm/expr.c:582
#3 0x7ffa04ee8e3c in expr_level_op test/yasm-uaf/SRC_asan/libyasm/expr.c:700
#4 0x7ffa04eea5d1 in expr_level_tree test/yasm-uaf/SRC_asan/libyasm/expr.c:880
#5 0x7ffa04eea546 in expr_level_tree test/yasm-uaf/SRC_asan/libyasm/expr.c:864
#6 0x7ffa04eea546 in expr_level_tree test/yasm-uaf/SRC_asan/libyasm/expr.c:864
#7 0x7ffa04eeb686 in yasm_expr__level_tree test/yasm-uaf/SRC_asan/libyasm/expr.c:906
#8 0x7ffa04eeeb52 in yasm_expr_get_intnum test/yasm-uaf/SRC_asan/libyasm/expr.c:1261
#9 0x7ffa04ed9c03 in yasm_bc_create_data test/yasm-uaf/SRC_asan/libyasm/bc-data.c:292
#10 0x7ffa01795e6e in parse_exp test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parse.c:669
#11 0x7ffa0179b89f in parse_exp test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parse.c:258
#12 0x7ffa0179b89f in parse_line test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parse.c:289
#13 0x7ffa0179b89f in nasm_parser_parse test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parse.c:231
#14 0x7ffa0178f36b in nasm_do_parse test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parser.c:66
#15 0x7ffa0178f36b in nasm_parser_do_parse test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parser.c:83
#16 0x402c84 in do_assemble test/yasm-uaf/SRC_asan/frontends/yasm/yasm.c:521
#17 0x402c84 in main test/yasm-uaf/SRC_asan/frontends/yasm/yasm.c:753
#18 0x7ffa0490b82f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
#19 0x403ee8 in _start ( test/yasm-uaf/bin_asan/bin/yasm+0x403ee8)
0x602000007098 is located 8 bytes inside of 16-byte region [0x602000007090,0x6020000070a0)
freed by thread T0 here:
#0 0x7ffa051c52ca in __interceptor_free (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x982ca)
#1 0x7ffa04ee887c in expr_level_op test/yasm-uaf/SRC_asan/libyasm/expr.c:689
#2 0x7ffa04eea5d1 in expr_level_tree test/yasm-uaf/SRC_asan/libyasm/expr.c:880
#3 0x7ffa04eea546 in expr_level_tree test/yasm-uaf/SRC_asan/libyasm/expr.c:864
#4 0x7ffa04eea546 in expr_level_tree test/yasm-uaf/SRC_asan/libyasm/expr.c:864
#5 0x7ffa04eeb686 in yasm_expr__level_tree test/yasm-uaf/SRC_asan/libyasm/expr.c:906
#6 0x7ffa04eeeb52 in yasm_expr_get_intnum test/yasm-uaf/SRC_asan/libyasm/expr.c:1261
#7 0x7ffa04ed9c03 in yasm_bc_create_data test/yasm-uaf/SRC_asan/libyasm/bc-data.c:292
#8 0x7ffa01795e6e in parse_exp test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parse.c:669
#9 0x7ffa0179b89f in parse_exp test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parse.c:258
#10 0x7ffa0179b89f in parse_line test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parse.c:289
#11 0x7ffa0179b89f in nasm_parser_parse test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parse.c:231
#12 0x7ffa0178f36b in nasm_do_parse test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parser.c:66
#13 0x7ffa0178f36b in nasm_parser_do_parse test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parser.c:83
#14 0x402c84 in do_assemble test/yasm-uaf/SRC_asan/frontends/yasm/yasm.c:521
#15 0x402c84 in main test/yasm-uaf/SRC_asan/frontends/yasm/yasm.c:753
#16 0x7ffa0490b82f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
previously allocated by thread T0 here:
#0 0x7ffa051c5602 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602)
#1 0x7ffa04f16769 in def_xmalloc test/yasm-uaf/SRC_asan/libyasm/xmalloc.c:69
#2 0x7ffa04efab26 in yasm_intnum_copy test/yasm-uaf/SRC_asan/libyasm/intnum.c:397
#3 0x7ffa04ee33e4 in expr_item_copy test/yasm-uaf/SRC_asan/libyasm/expr.c:975
#4 0x7ffa04ee33e4 in yasm_expr__copy_except test/yasm-uaf/SRC_asan/libyasm/expr.c:1006
#5 0x7ffa04eebc13 in expr_expand_equ test/yasm-uaf/SRC_asan/libyasm/expr.c:834
#6 0x7ffa04eebc13 in expr_expand_equ test/yasm-uaf/SRC_asan/libyasm/expr.c:843
#7 0x7ffa04eebc13 in expr_expand_equ test/yasm-uaf/SRC_asan/libyasm/expr.c:839
#8 0x7ffa04eebc13 in yasm_expr__level_tree test/yasm-uaf/SRC_asan/libyasm/expr.c:905
#9 0x7ffa04eeeb52 in yasm_expr_get_intnum test/yasm-uaf/SRC_asan/libyasm/expr.c:1261
#10 0x7ffa04ed9c03 in yasm_bc_create_data test/yasm-uaf/SRC_asan/libyasm/bc-data.c:292
#11 0x7ffa01795e6e in parse_exp test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parse.c:669
#12 0x7ffa0179b89f in parse_exp test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parse.c:258
#13 0x7ffa0179b89f in parse_line test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parse.c:289
#14 0x7ffa0179b89f in nasm_parser_parse test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parse.c:231
#15 0x7ffa0178f36b in nasm_do_parse test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parser.c:66
#16 0x7ffa0178f36b in nasm_parser_do_parse test/yasm-uaf/SRC_asan/modules/parsers/nasm/nasm-parser.c:83
#17 0x402c84 in do_assemble test/yasm-uaf/SRC_asan/frontends/yasm/yasm.c:521
#18 0x402c84 in main test/yasm-uaf/SRC_asan/frontends/yasm/yasm.c:753
#19 0x7ffa0490b82f in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2082f)
SUMMARY: AddressSanitizer: heap-use-after-free test/yasm-uaf/SRC_asan/libyasm/intnum.c:415 yasm_intnum_destroy
Shadow bytes around the buggy address:
0x0c047fff8dc0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c047fff8dd0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c047fff8de0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c047fff8df0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c047fff8e00: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
=>0x0c047fff8e10: fa fa fd[fd]fa fa 00 00 fa fa 00 00 fa fa fd fa
0x0c047fff8e20: fa fa fd fa fa fa 07 fa fa fa fd fa fa fa fd fa
0x0c047fff8e30: fa fa 07 fa fa fa 00 00 fa fa 00 00 fa fa 07 fa
0x0c047fff8e40: fa fa fd fa fa fa fd fd fa fa fd fa fa fa fd fa
0x0c047fff8e50: fa fa fd fa fa fa 03 fa fa fa 00 00 fa fa 00 00
0x0c047fff8e60: fa fa fd fa fa fa fd fa fa fa fd fa fa fa fd fd
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
==16102==ABORTINGMetadata
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