makeswf heap use-after-free 

There is a heap use-after-free bug in the makeswf


### Test Environment

Ubuntu 20.04, 64 bit 
libming(master, [04aee52](https://github.com/libming/libming/commit/04aee52363688426eab74f5d6180c149654a6473))
### How to trigger

1.  Compile the program with AddressSanitizer
2.  Run command `$ ./makeswf -v 4 POC`

### Details

#### ASAN report

    $ ./makeswf  -v 4 POC
    WARNING: SWF compression was unsupported until version 6, use -c -1 to disable.
    Output file name: out.swf
    Output compression level: 9
    Output SWF version: 4
    Preprocessing out/default/crashes/id:000020,sig:06,src:000116+000222,time:10814561,execs:205785,op:splice,rep:16... out/default/crashes/id:000020,sig:06,src:000116+000222,time:10814561,execs:205785,op:splice,rep:16:3:6: warning: null character(s) ignored
        3 | 
            � --
                 �� �OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO��|m�
          |      ^
    done.
    Compiling `out.swf.frame0.pp'... Unrecognized character: �
    Unrecognized character: �
    Unrecognized character: �
    Unrecognized character: �
    Unrecognized character: �
    Unrecognized character: �
    Unrecognized character: |
    =================================================================
    ==1015093==ERROR: AddressSanitizer: heap-use-after-free on address 0x60c000000040 at pc 0x7fc0689fcf8e bp 0x7ffc0527a390 sp 0x7ffc0527a388
    READ of size 1 at 0x60c000000040 thread T0
        #0 0x7fc0689fcf8d in bufferWriteData /home/root/libming/sourcecode/libming/src/actioncompiler/compile.c:208:20
        #1 0x7fc0689fd12e in bufferWriteBuffer /home/root/libming/sourcecode/libming/src/actioncompiler/compile.c:219:10
        #2 0x7fc068a17e87 in swf4parse /home/root/libming/sourcecode/libming/src/actioncompiler/./swf4compiler.y:945:5
        #3 0x7fc068a65ca7 in SWFAction_compile /home/root/libming/sourcecode/libming/src/blocks/action.c:133:17
        #4 0x4dfbfc in makeswf_compile_source /home/root/libming/sourcecode/libming/util/makeswf_utils.c:132:6
        #5 0x4dce26 in main /home/root/libming/sourcecode/libming/util/makeswf.c:412:9
        #6 0x7fc068637082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16
        #7 0x41d62d in _start (/home/root/libming/fuzz/makeswf_c_v_input/makeswf+0x41d62d)
    
    0x60c000000040 is located 0 bytes inside of 128-byte region [0x60c000000040,0x60c0000000c0)
    freed by thread T0 here:
        #0 0x4a0166 in __interceptor_realloc /local/mnt/workspace/bcain_clang_hu-bcain-lv_22036/final/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:85:3
        #1 0x7fc0689fcaaf in bufferCheckSize /home/root/libming/sourcecode/libming/src/actioncompiler/compile.c:180:43
        #2 0x7fc0689fcf32 in bufferWriteData /home/root/libming/sourcecode/libming/src/actioncompiler/compile.c:205:2
        #3 0x7fc0689fd12e in bufferWriteBuffer /home/root/libming/sourcecode/libming/src/actioncompiler/compile.c:219:10
        #4 0x7fc068a17e87 in swf4parse /home/root/libming/sourcecode/libming/src/actioncompiler/./swf4compiler.y:945:5
        #5 0x7fc068a65ca7 in SWFAction_compile /home/root/libming/sourcecode/libming/src/blocks/action.c:133:17
        #6 0x4dfbfc in makeswf_compile_source /home/root/libming/sourcecode/libming/util/makeswf_utils.c:132:6
        #7 0x4dce26 in main /home/root/libming/sourcecode/libming/util/makeswf.c:412:9
        #8 0x7fc068637082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16
    
    previously allocated by thread T0 here:
        #0 0x49fd3e in __interceptor_malloc /local/mnt/workspace/bcain_clang_hu-bcain-lv_22036/final/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:69:3
        #1 0x7fc0689fc631 in newBuffer /home/root/libming/sourcecode/libming/src/actioncompiler/compile.c:148:23
        #2 0x7fc068a1768f in swf4parse /home/root/libming/sourcecode/libming/src/actioncompiler/./swf4compiler.y:913:36
        #3 0x7fc068a65ca7 in SWFAction_compile /home/root/libming/sourcecode/libming/src/blocks/action.c:133:17
        #4 0x4dfbfc in makeswf_compile_source /home/root/libming/sourcecode/libming/util/makeswf_utils.c:132:6
        #5 0x4dce26 in main /home/root/libming/sourcecode/libming/util/makeswf.c:412:9
        #6 0x7fc068637082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16
    
    SUMMARY: AddressSanitizer: heap-use-after-free /home/root/libming/sourcecode/libming/src/actioncompiler/compile.c:208:20 in bufferWriteData
    Shadow bytes around the buggy address:
      0x0c187fff7fb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      0x0c187fff7fc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      0x0c187fff7fd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      0x0c187fff7fe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      0x0c187fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    =>0x0c187fff8000: fa fa fa fa fa fa fa fa[fd]fd fd fd fd fd fd fd
      0x0c187fff8010: fd fd fd fd fd fd fd fd fa fa fa fa fa fa fa fa
      0x0c187fff8020: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
      0x0c187fff8030: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
      0x0c187fff8040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
      0x0c187fff8050: 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
    ==1015093==ABORTING

[PoC](https://github.com/randomssr/PoCs/blob/main/makeswf/POC)
makeswf heap use-after-free 
This is a GitHub Issue
repo:libming
owner:libming
Title : makeswf heap use-after-free 
Issue date:

--- start body ---
makeswf heap use-after-free 

There is a heap use-after-free bug in the makeswf


### Test Environment

Ubuntu 20.04, 64 bit 
libming(master, [04aee52](https://github.com/libming/libming/commit/04aee52363688426eab74f5d6180c149654a6473))
### How to trigger

1.  Compile the program with AddressSanitizer
2.  Run command `$ ./makeswf -v 4 POC`

### Details

#### ASAN report

    $ ./makeswf  -v 4 POC
    WARNING: SWF compression was unsupported until version 6, use -c -1 to disable.
    Output file name: out.swf
    Output compression level: 9
    Output SWF version: 4
    Preprocessing out/default/crashes/id:000020,sig:06,src:000116+000222,time:10814561,execs:205785,op:splice,rep:16... out/default/crashes/id:000020,sig:06,src:000116+000222,time:10814561,execs:205785,op:splice,rep:16:3:6: warning: null character(s) ignored
        3 | 
            � --
                 �� �OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO��|m�
          |      ^
    done.
    Compiling `out.swf.frame0.pp'... Unrecognized character: �
    Unrecognized character: �
    Unrecognized character: �
    Unrecognized character: �
    Unrecognized character: �
    Unrecognized character: �
    Unrecognized character: |
    =================================================================
    ==1015093==ERROR: AddressSanitizer: heap-use-after-free on address 0x60c000000040 at pc 0x7fc0689fcf8e bp 0x7ffc0527a390 sp 0x7ffc0527a388
    READ of size 1 at 0x60c000000040 thread T0
        #0 0x7fc0689fcf8d in bufferWriteData /home/root/libming/sourcecode/libming/src/actioncompiler/compile.c:208:20
        #1 0x7fc0689fd12e in bufferWriteBuffer /home/root/libming/sourcecode/libming/src/actioncompiler/compile.c:219:10
        #2 0x7fc068a17e87 in swf4parse /home/root/libming/sourcecode/libming/src/actioncompiler/./swf4compiler.y:945:5
        #3 0x7fc068a65ca7 in SWFAction_compile /home/root/libming/sourcecode/libming/src/blocks/action.c:133:17
        #4 0x4dfbfc in makeswf_compile_source /home/root/libming/sourcecode/libming/util/makeswf_utils.c:132:6
        #5 0x4dce26 in main /home/root/libming/sourcecode/libming/util/makeswf.c:412:9
        #6 0x7fc068637082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16
        #7 0x41d62d in _start (/home/root/libming/fuzz/makeswf_c_v_input/makeswf+0x41d62d)
    
    0x60c000000040 is located 0 bytes inside of 128-byte region [0x60c000000040,0x60c0000000c0)
    freed by thread T0 here:
        #0 0x4a0166 in __interceptor_realloc /local/mnt/workspace/bcain_clang_hu-bcain-lv_22036/final/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:85:3
        #1 0x7fc0689fcaaf in bufferCheckSize /home/root/libming/sourcecode/libming/src/actioncompiler/compile.c:180:43
        #2 0x7fc0689fcf32 in bufferWriteData /home/root/libming/sourcecode/libming/src/actioncompiler/compile.c:205:2
        #3 0x7fc0689fd12e in bufferWriteBuffer /home/root/libming/sourcecode/libming/src/actioncompiler/compile.c:219:10
        #4 0x7fc068a17e87 in swf4parse /home/root/libming/sourcecode/libming/src/actioncompiler/./swf4compiler.y:945:5
        #5 0x7fc068a65ca7 in SWFAction_compile /home/root/libming/sourcecode/libming/src/blocks/action.c:133:17
        #6 0x4dfbfc in makeswf_compile_source /home/root/libming/sourcecode/libming/util/makeswf_utils.c:132:6
        #7 0x4dce26 in main /home/root/libming/sourcecode/libming/util/makeswf.c:412:9
        #8 0x7fc068637082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16
    
    previously allocated by thread T0 here:
        #0 0x49fd3e in __interceptor_malloc /local/mnt/workspace/bcain_clang_hu-bcain-lv_22036/final/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:69:3
        #1 0x7fc0689fc631 in newBuffer /home/root/libming/sourcecode/libming/src/actioncompiler/compile.c:148:23
        #2 0x7fc068a1768f in swf4parse /home/root/libming/sourcecode/libming/src/actioncompiler/./swf4compiler.y:913:36
        #3 0x7fc068a65ca7 in SWFAction_compile /home/root/libming/sourcecode/libming/src/blocks/action.c:133:17
        #4 0x4dfbfc in makeswf_compile_source /home/root/libming/sourcecode/libming/util/makeswf_utils.c:132:6
        #5 0x4dce26 in main /home/root/libming/sourcecode/libming/util/makeswf.c:412:9
        #6 0x7fc068637082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16
    
    SUMMARY: AddressSanitizer: heap-use-after-free /home/root/libming/sourcecode/libming/src/actioncompiler/compile.c:208:20 in bufferWriteData
    Shadow bytes around the buggy address:
      0x0c187fff7fb0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      0x0c187fff7fc0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      0x0c187fff7fd0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      0x0c187fff7fe0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      0x0c187fff7ff0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    =>0x0c187fff8000: fa fa fa fa fa fa fa fa[fd]fd fd fd fd fd fd fd
      0x0c187fff8010: fd fd fd fd fd fd fd fd fa fa fa fa fa fa fa fa
      0x0c187fff8020: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
      0x0c187fff8030: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
      0x0c187fff8040: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
      0x0c187fff8050: 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
    ==1015093==ABORTING

[PoC](https://github.com/randomssr/PoCs/blob/main/makeswf/POC)
--- end body ---

A heap use-after-free vulnerability in the makeswf component of libming allows attackers to exploit memory management issues, potentially leading to arbitrary code execution or application crashes. This vulnerability can be triggered by compiling the program with AddressSanitizer and running it with a specially crafted input file.