Description

heap-buffer-overflow in /radare2/shlr/java/code.c:211:21 in java_print_opcode

Version

$ r2  -v
radare2 5.8.9 31339 @ linux-x86-64
birth: git.5.8.8-691-gb2de2288d8 2023-10-17__01:18:28
commit: b2de2288d8299f89288c503fc2ce22381b61aba0

Platform

$ uname -a
Linux user-GE40-2PC-Dragon-Eyes 6.2.0-33-generic #33~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Sep  7 10:33:52 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

Asan

[31mERROR:[0m Invalid tag '83' at offset 0x00000047
[31mERROR:[0m Unable to parse class Attribute len (0x24020007) + offset (0x25b) exceeds length of buffer (0x5878)
[31mERROR:[0m unable to parse remainder of classfile after Method Attribute: 0
[31mERROR:[0m Unable to parse class Attribute len (0x47608fc2) + offset (0x255) exceeds length of buffer (0x5878)
[33mINFO:[0m Analyze all flags starting with sym. and entry0 (aa)
[33mINFO:[0m Analyze imports (af@@@i)
[35mWARN:[0m set your favourite calling convention in `e anal.cc=?`
[33mINFO:[0m Analyze symbols (af@@@s)
[33mINFO:[0m Recovering variables
[33mINFO:[0m Analyze all functions arguments/locals (afva@@@F)
[2K
[33mINFO:[0m Analyze function calls (aac)
[33mINFO:[0m Analyze len bytes of instructions for references (aar)
[33mINFO:[0m Finding and parsing C++ vtables (avrr)
[33mINFO:[0m Analyzing methods
[33mINFO:[0m Finding xrefs in noncode section (e anal.in=io.maps.x)
[33mINFO:[0m Emulate functions to find computed references (aaef)
=================================================================
==3433174==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x602000132dd2 at pc 0x7fe86fbfe09b bp 0x7fff8b14f4c0 sp 0x7fff8b14f4b8
READ of size 1 at 0x602000132dd2 thread T0
    #0 0x7fe86fbfe09a in java_print_opcode /home/user/fuzzing_radare2/radare2/shlr/java/code.c:211:21
    #1 0x7fe86fbfe86c in r_java_disasm /home/user/fuzzing_radare2/radare2/shlr/java/code.c:309:10
    #2 0x7fe86f9fb8e6 in decode /home/user/fuzzing_radare2/radare2/libr/arch/p/java/plugin.c:215:15
    #3 0x7fe86f562c85 in r_arch_decode /home/user/fuzzing_radare2/radare2/libr/arch/arch.c:320:9
    #4 0x7fe86dc629cf in r_anal_op /home/user/fuzzing_radare2/radare2/libr/anal/op.c:186:8
    #5 0x7fe8719d718f in r_core_anal_esil /home/user/fuzzing_radare2/radare2/libr/core/canal.c:5715:8
    #6 0x7fe87182176a in cmd_anal_all /home/user/fuzzing_radare2/radare2/libr/core/./cmd_anal.inc.c:13183:6
    #7 0x7fe871737429 in cmd_anal /home/user/fuzzing_radare2/radare2/libr/core/./cmd_anal.inc.c:14267:8
    #8 0x7fe87182381f in r_core_cmd_call /home/user/fuzzing_radare2/radare2/libr/core/cmd.c:6303:9
    #9 0x7fe87182381f in cmd_anal_all /home/user/fuzzing_radare2/radare2/libr/core/./cmd_anal.inc.c:13042:7
    #10 0x7fe871737429 in cmd_anal /home/user/fuzzing_radare2/radare2/libr/core/./cmd_anal.inc.c:14267:8
    #11 0x7fe8725c3940 in perform_analysis /home/user/fuzzing_radare2/radare2/libr/main/radare2.c:499:2
    #12 0x7fe8725b931d in r_main_radare2 /home/user/fuzzing_radare2/radare2/libr/main/radare2.c:1720:4
    #13 0x555816ea152d in main /home/user/fuzzing_radare2/radare2/binr/radare2/radare2.c:114:9
    #14 0x7fe872229d8f in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
    #15 0x7fe872229e3f in __libc_start_main csu/../csu/libc-start.c:392:3
    #16 0x555816de3444 in _start (/home/user/fuzzing_radare2/radare2/binr/radare2/radare2+0x1f444) (BuildId: 655cd64f4959101bcf192e77bc6bf062577e0708)

0x602000132dd2 is located 0 bytes to the right of 2-byte region [0x602000132dd0,0x602000132dd2)
allocated by thread T0 here:
    #0 0x555816e6628e in __interceptor_malloc (/home/user/fuzzing_radare2/radare2/binr/radare2/radare2+0xa228e) (BuildId: 655cd64f4959101bcf192e77bc6bf062577e0708)
    #1 0x7fe872764b88 in r_mem_dup /home/user/fuzzing_radare2/radare2/libr/util/mem.c:306:12

SUMMARY: AddressSanitizer: heap-buffer-overflow /home/user/fuzzing_radare2/radare2/shlr/java/code.c:211:21 in java_print_opcode
Shadow bytes around the buggy address:
  0x0c048001e560: fa fa fd fd fa fa fd fd fa fa 04 fa fa fa 04 fa
  0x0c048001e570: fa fa 04 fa fa fa 00 00 fa fa 00 00 fa fa 00 00
  0x0c048001e580: fa fa 00 00 fa fa 00 01 fa fa 00 00 fa fa 00 01
  0x0c048001e590: fa fa 00 00 fa fa 00 01 fa fa 00 00 fa fa 00 01
  0x0c048001e5a0: fa fa 00 00 fa fa 00 01 fa fa 00 00 fa fa 00 00
=>0x0c048001e5b0: fa fa 00 01 fa fa 04 fa fa fa[02]fa fa fa fa fa
  0x0c048001e5c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c048001e5d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c048001e5e0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c048001e5f0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c048001e600: 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
==3433174==ABORTING

Reproduce

r2 -A -q poc

POC File

https://github.com/gandalf4a/crash_report/blob/main/radare2/r2/r2_hbo_211

Credit

Gandalf4a