CVE-2023-30402: yasm heap buffer overflow · Issue #206 · yasm/yasm

How to trigger
Compile the program with AddressSanitizer
Run command $ ./yasm -s -o abc --force-strict $PoC
Details
ASAN report
$./yasm -s -o abc --force-strict $PoC

yasm: file name already has no extension: output will be in `yasm.out'
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==972503==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x602000006fd3 at pc 0x000000717cbd bp 0x7ffe3f1cd1c0 sp 0x7ffe3f1cd1b8
READ of size 1 at 0x602000006fd3 thread T0
    #0 0x717cbc in handle_dot_label /home/root/FuzzDateset/yasm/yasm-1.3.0/./modules/parsers/nasm/nasm-token.re:82:13
    #1 0x704533 in nasm_parser_lex /home/root/FuzzDateset/yasm/yasm-1.3.0/./modules/parsers/nasm/nasm-token.re:384:17
    #2 0x594fbb in demand_eol_ /home/root/FuzzDateset/yasm/yasm-1.3.0/modules/parsers/nasm/nasm-parse.c:149:9
    #3 0x591775 in nasm_parser_parse /home/root/FuzzDateset/yasm/yasm-1.3.0/modules/parsers/nasm/nasm-parse.c:232:13
    #4 0x590f3f in nasm_do_parse /home/root/FuzzDateset/yasm/yasm-1.3.0/modules/parsers/nasm/nasm-parser.c:66:5
    #5 0x5907fb in nasm_parser_do_parse /home/root/FuzzDateset/yasm/yasm-1.3.0/modules/parsers/nasm/nasm-parser.c:83:5
    #6 0x4d035f in do_assemble /home/root/FuzzDateset/yasm/yasm-1.3.0/frontends/yasm/yasm.c:519:5
    #7 0x4ccce0 in main /home/root/FuzzDateset/yasm/yasm-1.3.0/frontends/yasm/yasm.c:749:12
    #8 0x7f675d943082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16
    #9 0x41d46d in _start (/home/root/randomFuzz/yasm/yasm/yasm_s_o_f/yasm+0x41d46d)

0x602000006fd3 is located 0 bytes to the right of 3-byte region [0x602000006fd0,0x602000006fd3)
allocated by thread T0 here:
    #0 0x499c1d in __interceptor_malloc (/home/root/randomFuzz/yasm/yasm/yasm_s_o_f/yasm+0x499c1d)
    #1 0x53d0af in def_xmalloc /home/root/FuzzDateset/yasm/yasm-1.3.0/libyasm/xmalloc.c:69:14
    #2 0x53d86e in yasm__xstrndup /home/root/FuzzDateset/yasm/yasm-1.3.0/libyasm/xstrdup.c:64:16
    #3 0x717bfb in handle_dot_label /home/root/FuzzDateset/yasm/yasm-1.3.0/./modules/parsers/nasm/nasm-token.re:79:26
    #4 0x704533 in nasm_parser_lex /home/root/FuzzDateset/yasm/yasm-1.3.0/./modules/parsers/nasm/nasm-token.re:384:17
    #5 0x594fbb in demand_eol_ /home/root/FuzzDateset/yasm/yasm-1.3.0/modules/parsers/nasm/nasm-parse.c:149:9
    #6 0x591775 in nasm_parser_parse /home/root/FuzzDateset/yasm/yasm-1.3.0/modules/parsers/nasm/nasm-parse.c:232:13
    #7 0x590f3f in nasm_do_parse /home/root/FuzzDateset/yasm/yasm-1.3.0/modules/parsers/nasm/nasm-parser.c:66:5
    #8 0x5907fb in nasm_parser_do_parse /home/root/FuzzDateset/yasm/yasm-1.3.0/modules/parsers/nasm/nasm-parser.c:83:5
    #9 0x4d035f in do_assemble /home/root/FuzzDateset/yasm/yasm-1.3.0/frontends/yasm/yasm.c:519:5
    #10 0x4ccce0 in main /home/root/FuzzDateset/yasm/yasm-1.3.0/frontends/yasm/yasm.c:749:12
    #11 0x7f675d943082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16

SUMMARY: AddressSanitizer: heap-buffer-overflow /home/root/FuzzDateset/yasm/yasm-1.3.0/./modules/parsers/nasm/nasm-token.re:82:13 in handle_dot_label
Shadow bytes around the buggy address:
  0x0c047fff8da0: fa fa fd fa fa fa fd fa fa fa fd fa fa fa fd fa
  0x0c047fff8db0: fa fa fd fa fa fa fd fa fa fa fd fa fa fa fd fa
  0x0c047fff8dc0: fa fa fd fa fa fa fd fa fa fa fd fd fa fa fd fd
  0x0c047fff8dd0: fa fa fd fa fa fa fd fa fa fa 05 fa fa fa 05 fa
  0x0c047fff8de0: fa fa fd fa fa fa fd fa fa fa fd fa fa fa fd fa
=>0x0c047fff8df0: fa fa fd fa fa fa fd fa fa fa[03]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 fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff8e20: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff8e30: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c047fff8e40: 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
==972503==ABORTING