AddressSanitizer: SEGV on unknown address 0x000cffff800d

[beginvuln]

BPO	29493
Files	gcmodule_1699: PoC

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = <Date 2017-02-08.15:00:01.191>
created_at = <Date 2017-02-08.14:50:45.506>
labels = ['extension-modules', 'type-bug']
title = 'AddressSanitizer: SEGV on unknown address 0x000cffff800d'
updated_at = <Date 2017-02-08.15:00:01.190>
user = 'https://bugs.python.org/beginvuln'

bugs.python.org fields:

activity = <Date 2017-02-08.15:00:01.190>
actor = 'matrixise'
assignee = 'none'
closed = True
closed_date = <Date 2017-02-08.15:00:01.191>
closer = 'matrixise'
components = ['Extension Modules']
creation = <Date 2017-02-08.14:50:45.506>
creator = 'beginvuln'
dependencies = []
files = ['46588']
hgrepos = []
issue_num = 29493
keywords = []
message_count = 1.0
messages = ['287330']
nosy_count = 1.0
nosy_names = ['beginvuln']
pr_nums = []
priority = 'low'
resolution = None
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue29493'
versions = ['Python 3.6']

[beginvuln]

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 SIGSEGV, Segmentation fault.
0x000000000043d563 in PyObject_GC_UnTrack (op=0x7ffff3810400) at Modules/gcmodule.c:1699
1699 _PyObject_GC_UNTRACK(op);
Description: Access violation on destination operand
Short description: DestAv (8/22)
Hash: a30125899c34aa234161214a7afc7066.d78488ccad0508b81b411140385e7113
Exploitability Classification: EXPLOITABLE
Explanation: The target crashed on an access violation at an address matching the destination operand of the instruction. This likely indicates a write access violation, which means the attacker may control the write address and/or value.
Other tags: AccessViolation (21/22)

ASAN:

EsFASAN:DEADLYSIGNAL
=================================================================
==18094==ERROR: AddressSanitizer: SEGV on unknown address 0x000cffff800d (pc 0x000000543039 bp 0x0fec572c0c81 sp 0x7ffc421b9cf0 T0)
#0 0x543038 in PyObject_GC_UnTrack /home/test/check/PythonASAN/Modules/gcmodule.c:1699 (discriminator 4)
#1 0x543038 in ?? ??:0
#2 0x65ca2f in subtype_dealloc /home/test/check/PythonASAN/Objects/typeobject.c:1133
#3 0x65ca2f in ?? ??:0
#4 0x5d10da in frame_dealloc /home/test/check/PythonASAN/Objects/frameobject.c:423 (discriminator 5)
#5 0x5d10da in ?? ??:0
#6 0x5304c4 in tb_dealloc /home/test/check/PythonASAN/Python/traceback.c:55 (discriminator 5)
#7 0x5304c4 in ?? ??:0
#8 0x530456 in tb_dealloc /home/test/check/PythonASAN/Python/traceback.c:54 (discriminator 5)
#9 0x530456 in ?? ??:0
#10 0x530456 in tb_dealloc /home/test/check/PythonASAN/Python/traceback.c:54 (discriminator 5)
#11 0x530456 in ?? ??:0
#12 0x5b3b49 in BaseException_clear /home/test/check/PythonASAN/Objects/exceptions.c:76 (discriminator 5)
#13 0x5b3b49 in ?? ??:0
#14 0x5b3742 in BaseException_dealloc /home/test/check/PythonASAN/Objects/exceptions.c:86
#15 0x5b3742 in ?? ??:0
#16 0x656df9 in tupledealloc /home/test/check/PythonASAN/Objects/tupleobject.c:243 (discriminator 5)
#17 0x656df9 in ?? ??:0
#18 0x656df9 in tupledealloc /home/test/check/PythonASAN/Objects/tupleobject.c:243 (discriminator 5)
#19 0x656df9 in ?? ??:0
#20 0x5e5c19 in list_clear /home/test/check/PythonASAN/Objects/listobject.c:562 (discriminator 5)
#21 0x5e5c19 in listclear /home/test/check/PythonASAN/Objects/listobject.c:763 (discriminator 5)
#22 0x5e5c19 in ?? ??:0
#23 0x632208 in _PyCFunction_FastCallDict /home/test/check/PythonASAN/Objects/methodobject.c:192
#24 0x632208 in ?? ??:0
#25 0x7a7751 in call_function /home/test/check/PythonASAN/Python/ceval.c:4788 (discriminator 17)
#26 0x7a7751 in ?? ??:0
#27 0x7995cc in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3275
#28 0x7995cc in ?? ??:0
#29 0x7a9847 in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
#30 0x7a9847 in _PyEval_EvalCodeWithName /home/test/check/PythonASAN/Python/ceval.c:4119
#31 0x7a9847 in ?? ??:0
#32 0x7ac2ea in _PyFunction_FastCallDict /home/test/check/PythonASAN/Python/ceval.c:5021
#33 0x7ac2ea in ?? ??:0
#34 0x574668 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2295
#35 0x574668 in ?? ??:0
#36 0x5749fa in _PyObject_Call_Prepend /home/test/check/PythonASAN/Objects/abstract.c:2358
#37 0x5749fa in ?? ??:0
#38 0x573e9b in PyObject_Call /home/test/check/PythonASAN/Objects/abstract.c:2246
#39 0x573e9b in ?? ??:0
#40 0x793369 in do_call_core /home/test/check/PythonASAN/Python/ceval.c:5057
#41 0x793369 in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3357
#42 0x793369 in ?? ??:0
#43 0x7a9847 in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
#44 0x7a9847 in _PyEval_EvalCodeWithName /home/test/check/PythonASAN/Python/ceval.c:4119
#45 0x7a9847 in ?? ??:0
#46 0x7ac2ea in _PyFunction_FastCallDict /home/test/check/PythonASAN/Python/ceval.c:5021
#47 0x7ac2ea in ?? ??:0
#48 0x574668 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2295
#49 0x574668 in ?? ??:0
#50 0x5749fa in _PyObject_Call_Prepend /home/test/check/PythonASAN/Objects/abstract.c:2358
#51 0x5749fa in ?? ??:0
#52 0x573e9b in PyObject_Call /home/test/check/PythonASAN/Objects/abstract.c:2246
#53 0x573e9b in ?? ??:0
#54 0x66efe4 in slot_tp_call /home/test/check/PythonASAN/Objects/typeobject.c:6167
#55 0x66efe4 in ?? ??:0
#56 0x5745f0 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2316
#57 0x5745f0 in ?? ??:0
#58 0x7a7429 in call_function /home/test/check/PythonASAN/Python/ceval.c:4812
#59 0x7a7429 in ?? ??:0
#60 0x7995cc in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3275
#61 0x7995cc in ?? ??:0
#62 0x7a9847 in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
#63 0x7a9847 in _PyEval_EvalCodeWithName /home/test/check/PythonASAN/Python/ceval.c:4119
#64 0x7a9847 in ?? ??:0
#65 0x7ac2ea in _PyFunction_FastCallDict /home/test/check/PythonASAN/Python/ceval.c:5021
#66 0x7ac2ea in ?? ??:0
#67 0x574668 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2295
#68 0x574668 in ?? ??:0
#69 0x5749fa in _PyObject_Call_Prepend /home/test/check/PythonASAN/Objects/abstract.c:2358
#70 0x5749fa in ?? ??:0
#71 0x573e9b in PyObject_Call /home/test/check/PythonASAN/Objects/abstract.c:2246
#72 0x573e9b in ?? ??:0
#73 0x793369 in do_call_core /home/test/check/PythonASAN/Python/ceval.c:5057
#74 0x793369 in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3357
#75 0x793369 in ?? ??:0
#76 0x7a9847 in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
#77 0x7a9847 in _PyEval_EvalCodeWithName /home/test/check/PythonASAN/Python/ceval.c:4119
#78 0x7a9847 in ?? ??:0
#79 0x7ac2ea in _PyFunction_FastCallDict /home/test/check/PythonASAN/Python/ceval.c:5021
#80 0x7ac2ea in ?? ??:0
#81 0x574668 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2295
#82 0x574668 in ?? ??:0
#83 0x5749fa in _PyObject_Call_Prepend /home/test/check/PythonASAN/Objects/abstract.c:2358
#84 0x5749fa in ?? ??:0
#85 0x573e9b in PyObject_Call /home/test/check/PythonASAN/Objects/abstract.c:2246
#86 0x573e9b in ?? ??:0
#87 0x66efe4 in slot_tp_call /home/test/check/PythonASAN/Objects/typeobject.c:6167
#88 0x66efe4 in ?? ??:0
#89 0x5745f0 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2316
#90 0x5745f0 in ?? ??:0
#91 0x7a7429 in call_function /home/test/check/PythonASAN/Python/ceval.c:4812
#92 0x7a7429 in ?? ??:0
#93 0x7995cc in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3275
#94 0x7995cc in ?? ??:0
#95 0x7a9847 in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
#96 0x7a9847 in _PyEval_EvalCodeWithName /home/test/check/PythonASAN/Python/ceval.c:4119
#97 0x7a9847 in ?? ??:0
#98 0x7ac2ea in _PyFunction_FastCallDict /home/test/check/PythonASAN/Python/ceval.c:5021
#99 0x7ac2ea in ?? ??:0
#100 0x574668 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2295
#101 0x574668 in ?? ??:0
#102 0x5749fa in _PyObject_Call_Prepend /home/test/check/PythonASAN/Objects/abstract.c:2358
#103 0x5749fa in ?? ??:0
#104 0x573e9b in PyObject_Call /home/test/check/PythonASAN/Objects/abstract.c:2246
#105 0x573e9b in ?? ??:0
#106 0x793369 in do_call_core /home/test/check/PythonASAN/Python/ceval.c:5057
#107 0x793369 in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3357
#108 0x793369 in ?? ??:0
#109 0x7a9847 in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
#110 0x7a9847 in _PyEval_EvalCodeWithName /home/test/check/PythonASAN/Python/ceval.c:4119
#111 0x7a9847 in ?? ??:0
#112 0x7ac2ea in _PyFunction_FastCallDict /home/test/check/PythonASAN/Python/ceval.c:5021
#113 0x7ac2ea in ?? ??:0
#114 0x574668 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2295
#115 0x574668 in ?? ??:0
#116 0x5749fa in _PyObject_Call_Prepend /home/test/check/PythonASAN/Objects/abstract.c:2358
#117 0x5749fa in ?? ??:0
#118 0x573e9b in PyObject_Call /home/test/check/PythonASAN/Objects/abstract.c:2246
#119 0x573e9b in ?? ??:0
#120 0x66efe4 in slot_tp_call /home/test/check/PythonASAN/Objects/typeobject.c:6167
#121 0x66efe4 in ?? ??:0
#122 0x5745f0 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2316
#123 0x5745f0 in ?? ??:0
#124 0x7a7429 in call_function /home/test/check/PythonASAN/Python/ceval.c:4812
#125 0x7a7429 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 0x7ab4cb in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
#137 0x7ab4cb in _PyFunction_FastCall /home/test/check/PythonASAN/Python/ceval.c:4870
#138 0x7ab4cb in fast_function /home/test/check/PythonASAN/Python/ceval.c:4905
#139 0x7ab4cb in ?? ??:0
#140 0x7a76f2 in call_function /home/test/check/PythonASAN/Python/ceval.c:4809
#141 0x7a76f2 in ?? ??:0
#142 0x7995cc in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3275
#143 0x7995cc in ?? ??:0
#144 0x7a9847 in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
#145 0x7a9847 in _PyEval_EvalCodeWithName /home/test/check/PythonASAN/Python/ceval.c:4119
#146 0x7a9847 in ?? ??:0
#147 0x7ac2ea in _PyFunction_FastCallDict /home/test/check/PythonASAN/Python/ceval.c:5021
#148 0x7ac2ea in ?? ??:0
#149 0x574668 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2295
#150 0x574668 in ?? ??:0
#151 0x5749fa in _PyObject_Call_Prepend /home/test/check/PythonASAN/Objects/abstract.c:2358
#152 0x5749fa in ?? ??:0
#153 0x573e9b in PyObject_Call /home/test/check/PythonASAN/Objects/abstract.c:2246
#154 0x573e9b in ?? ??:0
#155 0x6713f8 in slot_tp_init /home/test/check/PythonASAN/Objects/typeobject.c:6380
#156 0x6713f8 in ?? ??:0
#157 0x666d8d in type_call /home/test/check/PythonASAN/Objects/typeobject.c:915 (discriminator 1)
#158 0x666d8d in ?? ??:0
#159 0x5745f0 in _PyObject_FastCallDict /home/test/check/PythonASAN/Objects/abstract.c:2316
#160 0x5745f0 in ?? ??:0
#161 0x7a7429 in call_function /home/test/check/PythonASAN/Python/ceval.c:4812
#162 0x7a7429 in ?? ??:0
#163 0x7995cc in _PyEval_EvalFrameDefault /home/test/check/PythonASAN/Python/ceval.c:3275
#164 0x7995cc in ?? ??:0
#165 0x7a9847 in PyEval_EvalFrameEx /home/test/check/PythonASAN/Python/ceval.c:718
#166 0x7a9847 in _PyEval_EvalCodeWithName /home/test/check/PythonASAN/Python/ceval.c:4119
#167 0x7a9847 in ?? ??:0
#168 0x78e0df in PyEval_EvalCodeEx /home/test/check/PythonASAN/Python/ceval.c:4140
#169 0x78e0df in PyEval_EvalCode /home/test/check/PythonASAN/Python/ceval.c:695
#170 0x78e0df in ?? ??:0
#171 0x5142f5 in run_mod /home/test/check/PythonASAN/Python/pythonrun.c:980
#172 0x5142f5 in PyRun_FileExFlags /home/test/check/PythonASAN/Python/pythonrun.c:933
#173 0x5142f5 in ?? ??:0
#174 0x512afa in PyRun_SimpleFileExFlags /home/test/check/PythonASAN/Python/pythonrun.c:396
#175 0x512afa in ?? ??:0
#176 0x53eefd in run_file /home/test/check/PythonASAN/Modules/main.c:320
#177 0x53eefd in Py_Main /home/test/check/PythonASAN/Modules/main.c:780
#178 0x53eefd in ?? ??:0
#179 0x503d16 in main /home/test/check/PythonASAN/./Programs/python.c:69
#180 0x503d16 in ?? ??:0
#181 0x7f62bf5d482f in __libc_start_main /build/glibc-GKVZIf/glibc-2.23/csu/../csu/libc-start.c:291
#182 0x7f62bf5d482f in ?? ??:0
#183 0x432548 in _start ??:?
#184 0x432548 in ?? ??:0

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV (/home/test/check/PythonASAN/python+0x543038)
==18094==ABORTING