heap-buffer-overflow /home/ubuntu/fuzz/radare2/libr/include/r_endian.h:176 in r_read_le32
Distributor ID: Ubuntu
Description: Ubuntu 20.04 LTS
Release: 20.04
Codename: focal
radare2 5.6.3 27472 @ linux-x86-64 git.5.6.2
commit: d24dbb9fbb0b398a6a739847008ccef3ea7e687c
=================================================================
==3022342==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x62400012dd3f at pc 0x7f1a2103bced bp 0x7ffdadb6e090 sp 0x7ffdadb6e080
READ of size 1 at 0x62400012dd3f thread T0
#0 0x7f1a2103bcec in r_read_le32 /home/ubuntu/fuzz/radare2/libr/include/r_endian.h:176
#1 0x7f1a2103bcec in r_read_at_le32 /home/ubuntu/fuzz/radare2/libr/include/r_endian.h:185
#2 0x7f1a2103bcec in r_read_le64 /home/ubuntu/fuzz/radare2/libr/include/r_endian.h:199
#3 0x7f1a2103bcec in r_coresym_cache_element_new /home/ubuntu/fuzz/radare2/libr/..//libr/bin/p/../format/mach0/coresymbolication.c:227
#4 0x7f1a210323ea in parseDragons /home/ubuntu/fuzz/radare2/libr/..//libr/bin/p/bin_symbols.c:250
#5 0x7f1a210323ea in load_buffer /home/ubuntu/fuzz/radare2/libr/..//libr/bin/p/bin_symbols.c:289
#6 0x7f1a210323ea in load_buffer /home/ubuntu/fuzz/radare2/libr/..//libr/bin/p/bin_symbols.c:253
#7 0x7f1a20b08d17 in r_bin_object_new /home/ubuntu/fuzz/radare2/libr/bin/bobj.c:147
#8 0x7f1a20af9db0 in r_bin_file_new_from_buffer /home/ubuntu/fuzz/radare2/libr/bin/bfile.c:560
#9 0x7f1a20ab4b67 in r_bin_open_buf /home/ubuntu/fuzz/radare2/libr/bin/bin.c:279
#10 0x7f1a20ab6009 in r_bin_open_io /home/ubuntu/fuzz/radare2/libr/bin/bin.c:339
#11 0x7f1a218f82c8 in r_core_file_do_load_for_io_plugin /home/ubuntu/fuzz/radare2/libr/core/cfile.c:435
#12 0x7f1a218f82c8 in r_core_bin_load /home/ubuntu/fuzz/radare2/libr/core/cfile.c:636
#13 0x7f1a218f82c8 in r_core_bin_load /home/ubuntu/fuzz/radare2/libr/core/cfile.c:604
#14 0x7f1a24a062ba in r_main_radare2 /home/ubuntu/fuzz/radare2/libr/main/radare2.c:1179
#15 0x7f1a247a50b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)
#16 0x560f17c179fd in _start (/home/ubuntu/fuzz/radare2/binr/radare2/radare2+0x99fd)
0x62400012dd3f is located 0 bytes to the right of 7231-byte region [0x62400012c100,0x62400012dd3f)
allocated by thread T0 here:
#0 0x560f17d02a48 in __interceptor_malloc (/home/ubuntu/fuzz/radare2/binr/radare2/radare2+0xf4a48)
#1 0x7f1a210355c1 in r_coresym_cache_element_new /home/ubuntu/fuzz/radare2/libr/..//libr/bin/p/../format/mach0/coresymbolication.c:180
SUMMARY: AddressSanitizer: heap-buffer-overflow /home/ubuntu/fuzz/radare2/libr/include/r_endian.h:176 in r_read_le32
Shadow bytes around the buggy address:
0x0c488001db50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c488001db60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c488001db70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c488001db80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c488001db90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c488001dba0: 00 00 00 00 00 00 00[07]fa fa fa fa fa fa fa fa
0x0c488001dbb0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c488001dbc0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c488001dbd0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c488001dbe0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c488001dbf0: 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
==3022342==ABORTING
./radare2 -qq -AA ./heap_overflow_poc
The bug causes the program reads data past the end of the intented buffer. Typically, this can allow attackers to read sensitive information from other memory locations or cause a crash.