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Created on 2018-07-20 09:21 by Barro, last changed 2022-04-11 14:59 by admin. This issue is now closed.
| Pull Requests | |||
|---|---|---|---|
| URL | Status | Linked | Edit |
| PR 8351 | merged | serhiy.storchaka, 2018-07-20 15:09 | |
| PR 8435 | merged | miss-islington, 2018-07-24 09:53 | |
| PR 8436 | merged | serhiy.storchaka, 2018-07-24 10:55 | |
| Messages (6) | |||
|---|---|---|---|
| msg321991 - (view) | Author: Jussi Judin (Barro) | Date: 2018-07-20 09:21 | |
base64.b32decode() function leads into "UnboundLocalError: local variable 'acc' referenced before assignment" when passing 8 equality signs as data: >>> import base64 >>> base64.b32decode(b"========") Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/tmp/python-3.7-bin/lib/python3.7/base64.py", line 235, in b32decode acc <<= 5 * padchars UnboundLocalError: local variable 'acc' referenced before assignment When passing a different number of equality signs, the documented binascii.Error exception is thrown. |
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| msg321992 - (view) | Author: Jussi Judin (Barro) | Date: 2018-07-20 09:28 | |
Apparently base64.b32decode() also has another issue that I missed when going through the issues with base64 module: >>> import base64 >>> base64.b32decode(b"M===============================") Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/tmp/python-3.7-bin/lib/python3.7/base64.py", line 236, in b32decode last = acc.to_bytes(5, 'big') OverflowError: int too big to convert |
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| msg322012 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) *  |
Date: 2018-07-20 15:13 | |
Thank you for your report Jussi. The type "crash" is used for hard crashes of the Python interpreter – possibly with a core dump or a Windows error box. |
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| msg322284 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2018-07-24 09:52 | |
New changeset ac0b3c2f4d86fc056b833a4e6b9a380741244a63 by Serhiy Storchaka in branch 'master': bpo-34164: Fix handling of incorrect padding in base64.b32decode(). (GH-8351) https://github.com/python/cpython/commit/ac0b3c2f4d86fc056b833a4e6b9a380741244a63 |
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| msg322289 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2018-07-24 10:53 | |
New changeset 0b2716918345b2bff0bb5c36086d5de368125536 by Serhiy Storchaka (Miss Islington (bot)) in branch '3.7': bpo-34164: Fix handling of incorrect padding in base64.b32decode(). (GH-8351) (GH-8435) https://github.com/python/cpython/commit/0b2716918345b2bff0bb5c36086d5de368125536 |
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| msg322294 - (view) | Author: Serhiy Storchaka (serhiy.storchaka) * |
Date: 2018-07-24 12:07 | |
New changeset 113f86e7487e9312a2494667b088854ac942ab00 by Serhiy Storchaka in branch '3.6': [3.6] bpo-34164: Fix handling of incorrect padding in base64.b32decode(). (GH-8351) (GH-8436) https://github.com/python/cpython/commit/113f86e7487e9312a2494667b088854ac942ab00 |
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| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:59:03 | admin | set | github: 78345 |
| 2018-07-24 12:12:19 | serhiy.storchaka | set | status: open -> closed resolution: fixed stage: patch review -> resolved |
| 2018-07-24 12:07:01 | serhiy.storchaka | set | messages: + msg322294 |
| 2018-07-24 10:55:37 | serhiy.storchaka | set | pull_requests: + pull_request7961 |
| 2018-07-24 10:53:45 | serhiy.storchaka | set | messages: + msg322289 |
| 2018-07-24 09:53:11 | miss-islington | set | pull_requests: + pull_request7960 |
| 2018-07-24 09:52:59 | serhiy.storchaka | set | messages: + msg322284 |
| 2018-07-20 15:13:28 | serhiy.storchaka | set | versions:
+ Python 3.6, Python 3.8 nosy: + serhiy.storchaka messages: + msg322012 type: crash -> behavior |
| 2018-07-20 15:09:25 | serhiy.storchaka | set | keywords:
+ patch stage: patch review pull_requests: + pull_request7886 |
| 2018-07-20 09:28:43 | Barro | set | messages:
+ msg321992 title: base64.b32decode() leads into UnboundLocalError on some data -> base64.b32decode() leads into UnboundLocalError and OverflowError on some data |
| 2018-07-20 09:21:09 | Barro | create | |