classification
Title: AddressSanitizer: SEGV on unknown address 0x7f16f88e3560
Type: behavior Stage: resolved
Components: Extension Modules Versions: Python 3.6
process
Status: closed Resolution:
Dependencies: Superseder:
Assigned To: Nosy List: beginvuln
Priority: low Keywords:

Created on 2017-02-08 14:44 by beginvuln, last changed 2017-02-08 14:59 by matrixise. This issue is now closed.

Files
File name Uploaded Description Edit
cfield_651 beginvuln, 2017-02-08 14:44 PoC
Messages (1)
msg287320 - (view) Author: BeginVuln (beginvuln) Date: 2017-02-08 14:44
OS Version : Ubuntu 16.04 LTS
Python download link : https://www.python.org/ftp/python/3.6.0/Python-3.6.0.tar.xz

Python version : 3.6.0

Normal build cmd : 
./configure 
make

Asan build cmd:
export CC="/usr/bin/clang -fsanitize=address
export CXX="/usr/bin/clang++ -fsanitize=address
./confiugre
make

GDB with exploitable:

To enable execution of this file add
	add-auto-load-safe-path /home/test/check/PythonGDB/python-gdb.py
line to your configuration file "/home/test/.gdbinit".
To completely disable this security protection add
	set auto-load safe-path /
line to your configuration file "/home/test/.gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual.  E.g., run from the shell:
	info "(gdb)Auto-loading safe path"
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".

Program received signal SIGBUS, Bus error.
0x00007ffff63a6dfe in i_set (ptr=0x8007f5b3f5e8, value=<optimized out>, size=4) at /home/test/check/PythonGDB/Modules/_ctypes/cfield.c:650
650	    x = SET(int, x, val, size);
Description: Access violation
Short description: AccessViolation (21/22)
Hash: 0e6533f2dc6ec45bf8aced4adaa8169a.5ae343e4a8ceeca018e7fc78f552033e
Exploitability Classification: UNKNOWN
Explanation: The target crashed due to an access violation but there is not enough additional information available to determine exploitability.


ASAN:

ASAN:DEADLYSIGNAL
=================================================================
==18660==ERROR: AddressSanitizer: SEGV on unknown address 0x7f16f88e3560 (pc 0x7f0ef90f6e68 bp 0x619000035c98 sp 0x7ffe7b44e2e0 T0)
    #0 0x7f0ef90f6e67 in i_set /home/test/check/PythonASAN/Modules/_ctypes/cfield.c:651
    #1 0x7f0ef90f6e67 in ?? ??:0
    #2 0x7f0ef90da8ea in PyCData_set /home/test/check/PythonASAN/Modules/_ctypes/_ctypes.c:2916
    #3 0x7f0ef90da8ea in ?? ??:0
    #4 0x7f0ef90f5470 in PyCField_set /home/test/check/PythonASAN/Modules/_ctypes/cfield.c:216
    #5 0x7f0ef90f5470 in ?? ??:0
    #6 0x63b1e7 in _PyObject_GenericSetAttrWithDict /home/test/check/PythonASAN/Objects/object.c:1152
    #7 0x63b1e7 in ?? ??:0
    #8 0x639d52 in PyObject_SetAttr /home/test/check/PythonASAN/Objects/object.c:932
    #9 0x639d52 in ?? ??:0
    #10 0x79ad9e in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:2249
    #11 0x79ad9e in ?? ??:0
    #12 0x7a9847 in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
    #13 0x7a9847 in _PyEval_EvalCodeWithName /home/test/check/PythonASAN/Python/ceval.c:4119
    #14 0x7a9847 in ?? ??:0
    #15 0x7ab648 in fast_function /home/test/check/PythonASAN/Python/ceval.c:4929 (discriminator 1)
    #16 0x7ab648 in ?? ??:0
    #17 0x7a76f2 in call_function /home/test/check/PythonASAN/Python/ceval.c:4809
    #18 0x7a76f2 in ?? ??:0
    #19 0x7995cc in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3275
    #20 0x7995cc in ?? ??:0
    #21 0x7a9847 in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
    #22 0x7a9847 in _PyEval_EvalCodeWithName /home/test/check/PythonASAN/Python/ceval.c:4119
    #23 0x7a9847 in ?? ??:0
    #24 0x7ac2ea in _PyFunction_FastCallDict /home/test/check/PythonASAN/Python/ceval.c:5021
    #25 0x7ac2ea in ?? ??:0
    #26 0x574668 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2295
    #27 0x574668 in ?? ??:0
    #28 0x5749fa in _PyObject_Call_Prepend /home/test/check/PythonASAN/Objects/abstract.c:2358
    #29 0x5749fa in ?? ??:0
    #30 0x573e9b in PyObject_Call /home/test/check/PythonASAN/Objects/abstract.c:2246
    #31 0x573e9b in ?? ??:0
    #32 0x793369 in do_call_core /home/test/check/PythonASAN/Python/ceval.c:5057
    #33 0x793369 in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3357
    #34 0x793369 in ?? ??:0
    #35 0x7a9847 in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
    #36 0x7a9847 in _PyEval_EvalCodeWithName /home/test/check/PythonASAN/Python/ceval.c:4119
    #37 0x7a9847 in ?? ??:0
    #38 0x7ac2ea in _PyFunction_FastCallDict /home/test/check/PythonASAN/Python/ceval.c:5021
    #39 0x7ac2ea in ?? ??:0
    #40 0x574668 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2295
    #41 0x574668 in ?? ??:0
    #42 0x5749fa in _PyObject_Call_Prepend /home/test/check/PythonASAN/Objects/abstract.c:2358
    #43 0x5749fa in ?? ??:0
    #44 0x573e9b in PyObject_Call /home/test/check/PythonASAN/Objects/abstract.c:2246
    #45 0x573e9b in ?? ??:0
    #46 0x66efe4 in slot_tp_call /home/test/check/PythonASAN/Objects/typeobject.c:6167
    #47 0x66efe4 in ?? ??:0
    #48 0x5745f0 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2316
    #49 0x5745f0 in ?? ??:0
    #50 0x7a7429 in call_function /home/test/check/PythonASAN/Python/ceval.c:4812
    #51 0x7a7429 in ?? ??:0
    #52 0x7995cc in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3275
    #53 0x7995cc in ?? ??:0
    #54 0x7a9847 in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
    #55 0x7a9847 in _PyEval_EvalCodeWithName /home/test/check/PythonASAN/Python/ceval.c:4119
    #56 0x7a9847 in ?? ??:0
    #57 0x7ac2ea in _PyFunction_FastCallDict /home/test/check/PythonASAN/Python/ceval.c:5021
    #58 0x7ac2ea in ?? ??:0
    #59 0x574668 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2295
    #60 0x574668 in ?? ??:0
    #61 0x5749fa in _PyObject_Call_Prepend /home/test/check/PythonASAN/Objects/abstract.c:2358
    #62 0x5749fa in ?? ??:0
    #63 0x573e9b in PyObject_Call /home/test/check/PythonASAN/Objects/abstract.c:2246
    #64 0x573e9b in ?? ??:0
    #65 0x793369 in do_call_core /home/test/check/PythonASAN/Python/ceval.c:5057
    #66 0x793369 in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3357
    #67 0x793369 in ?? ??:0
    #68 0x7a9847 in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
    #69 0x7a9847 in _PyEval_EvalCodeWithName /home/test/check/PythonASAN/Python/ceval.c:4119
    #70 0x7a9847 in ?? ??:0
    #71 0x7ac2ea in _PyFunction_FastCallDict /home/test/check/PythonASAN/Python/ceval.c:5021
    #72 0x7ac2ea in ?? ??:0
    #73 0x574668 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2295
    #74 0x574668 in ?? ??:0
    #75 0x5749fa in _PyObject_Call_Prepend /home/test/check/PythonASAN/Objects/abstract.c:2358
    #76 0x5749fa in ?? ??:0
    #77 0x573e9b in PyObject_Call /home/test/check/PythonASAN/Objects/abstract.c:2246
    #78 0x573e9b in ?? ??:0
    #79 0x66efe4 in slot_tp_call /home/test/check/PythonASAN/Objects/typeobject.c:6167
    #80 0x66efe4 in ?? ??:0
    #81 0x5745f0 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2316
    #82 0x5745f0 in ?? ??:0
    #83 0x7a7429 in call_function /home/test/check/PythonASAN/Python/ceval.c:4812
    #84 0x7a7429 in ?? ??:0
    #85 0x7995cc in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3275
    #86 0x7995cc in ?? ??:0
    #87 0x7a9847 in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
    #88 0x7a9847 in _PyEval_EvalCodeWithName /home/test/check/PythonASAN/Python/ceval.c:4119
    #89 0x7a9847 in ?? ??:0
    #90 0x7ac2ea in _PyFunction_FastCallDict /home/test/check/PythonASAN/Python/ceval.c:5021
    #91 0x7ac2ea in ?? ??:0
    #92 0x574668 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2295
    #93 0x574668 in ?? ??:0
    #94 0x5749fa in _PyObject_Call_Prepend /home/test/check/PythonASAN/Objects/abstract.c:2358
    #95 0x5749fa in ?? ??:0
    #96 0x573e9b in PyObject_Call /home/test/check/PythonASAN/Objects/abstract.c:2246
    #97 0x573e9b in ?? ??:0
    #98 0x793369 in do_call_core /home/test/check/PythonASAN/Python/ceval.c:5057
    #99 0x793369 in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3357
    #100 0x793369 in ?? ??:0
    #101 0x7a9847 in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
    #102 0x7a9847 in _PyEval_EvalCodeWithName /home/test/check/PythonASAN/Python/ceval.c:4119
    #103 0x7a9847 in ?? ??:0
    #104 0x7ac2ea in _PyFunction_FastCallDict /home/test/check/PythonASAN/Python/ceval.c:5021
    #105 0x7ac2ea in ?? ??:0
    #106 0x574668 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2295
    #107 0x574668 in ?? ??:0
    #108 0x5749fa in _PyObject_Call_Prepend /home/test/check/PythonASAN/Objects/abstract.c:2358
    #109 0x5749fa in ?? ??:0
    #110 0x573e9b in PyObject_Call /home/test/check/PythonASAN/Objects/abstract.c:2246
    #111 0x573e9b in ?? ??:0
    #112 0x66efe4 in slot_tp_call /home/test/check/PythonASAN/Objects/typeobject.c:6167
    #113 0x66efe4 in ?? ??:0
    #114 0x5745f0 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2316
    #115 0x5745f0 in ?? ??:0
    #116 0x7a7429 in call_function /home/test/check/PythonASAN/Python/ceval.c:4812
    #117 0x7a7429 in ?? ??:0
    #118 0x7995cc in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3275
    #119 0x7995cc in ?? ??:0
    #120 0x7ab4cb in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
    #121 0x7ab4cb in _PyFunction_FastCall /home/test/check/PythonASAN/Python/ceval.c:4870
    #122 0x7ab4cb in fast_function /home/test/check/PythonASAN/Python/ceval.c:4905
    #123 0x7ab4cb in ?? ??:0
    #124 0x7a76f2 in call_function /home/test/check/PythonASAN/Python/ceval.c:4809
    #125 0x7a76f2 in ?? ??:0
    #126 0x7995cc in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3275
    #127 0x7995cc in ?? ??:0
    #128 0x7ab4cb in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
    #129 0x7ab4cb in _PyFunction_FastCall /home/test/check/PythonASAN/Python/ceval.c:4870
    #130 0x7ab4cb in fast_function /home/test/check/PythonASAN/Python/ceval.c:4905
    #131 0x7ab4cb in ?? ??:0
    #132 0x7a76f2 in call_function /home/test/check/PythonASAN/Python/ceval.c:4809
    #133 0x7a76f2 in ?? ??:0
    #134 0x7995cc in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3275
    #135 0x7995cc in ?? ??:0
    #136 0x7a9847 in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
    #137 0x7a9847 in _PyEval_EvalCodeWithName /home/test/check/PythonASAN/Python/ceval.c:4119
    #138 0x7a9847 in ?? ??:0
    #139 0x7ac2ea in _PyFunction_FastCallDict /home/test/check/PythonASAN/Python/ceval.c:5021
    #140 0x7ac2ea in ?? ??:0
    #141 0x574668 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2295
    #142 0x574668 in ?? ??:0
    #143 0x5749fa in _PyObject_Call_Prepend /home/test/check/PythonASAN/Objects/abstract.c:2358
    #144 0x5749fa in ?? ??:0
    #145 0x573e9b in PyObject_Call /home/test/check/PythonASAN/Objects/abstract.c:2246
    #146 0x573e9b in ?? ??:0
    #147 0x6713f8 in slot_tp_init /home/test/check/PythonASAN/Objects/typeobject.c:6380
    #148 0x6713f8 in ?? ??:0
    #149 0x666d8d in type_call /home/test/check/PythonASAN/Objects/typeobject.c:915 (discriminator 1)
    #150 0x666d8d in ?? ??:0
    #151 0x5745f0 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2316
    #152 0x5745f0 in ?? ??:0
    #153 0x7a7429 in call_function /home/test/check/PythonASAN/Python/ceval.c:4812
    #154 0x7a7429 in ?? ??:0
    #155 0x7995cc in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3275
    #156 0x7995cc in ?? ??:0
    #157 0x7a9847 in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
    #158 0x7a9847 in _PyEval_EvalCodeWithName /home/test/check/PythonASAN/Python/ceval.c:4119
    #159 0x7a9847 in ?? ??:0
    #160 0x78e0df in PyEval_EvalCodeEx /home/test/check/PythonASAN/Python/ceval.c:4140
    #161 0x78e0df in PyEval_EvalCode /home/test/check/PythonASAN/Python/ceval.c:695
    #162 0x78e0df in ?? ??:0
    #163 0x5142f5 in run_mod /home/test/check/PythonASAN/Python/pythonrun.c:980
    #164 0x5142f5 in PyRun_FileExFlags /home/test/check/PythonASAN/Python/pythonrun.c:933
    #165 0x5142f5 in ?? ??:0
    #166 0x512afa in PyRun_SimpleFileExFlags /home/test/check/PythonASAN/Python/pythonrun.c:396
    #167 0x512afa in ?? ??:0
    #168 0x53eefd in run_file /home/test/check/PythonASAN/Modules/main.c:320
    #169 0x53eefd in Py_Main /home/test/check/PythonASAN/Modules/main.c:780
    #170 0x53eefd in ?? ??:0
    #171 0x503d16 in main /home/test/check/PythonASAN/./Programs/python.c:69
    #172 0x503d16 in ?? ??:0
    #173 0x7f0efc49282f in __libc_start_main /build/glibc-GKVZIf/glibc-2.23/csu/../csu/libc-start.c:291
    #174 0x7f0efc49282f in ?? ??:0
    #175 0x432548 in _start ??:?
    #176 0x432548 in ?? ??:0

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/home/test/check/PythonASAN/build/lib.linux-x86_64-3.6/_ctypes.cpython-36m-x86_64-linux-gnu.so+0x34e67)
==18660==ABORTING
History
Date User Action Args
2017-02-08 14:59:07matrixisesetstatus: open -> closed
stage: resolved
2017-02-08 14:57:03christian.heimessetpriority: normal -> low
components: + Extension Modules, - Interpreter Core
2017-02-08 14:54:38christian.heimessettype: security -> behavior
2017-02-08 14:44:02beginvulncreate