socket: Buffer overrun while reading unterminated AF_UNIX addresses

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#52,619 2010年4月11日に作成コメント 20 件リアクション 0 件担当者 0 名 GitHub で見る

まだ誰も着手していません。

評価

難易度: 5/5
見積もり時間: 1週間以上
初心者へのやさしさ: 15/100

issue の種類: バグ
明瞭さ: おおむね明確
活発さ: 停滞
技術スタック: c, python
領域: networking, security

調査の方向性

The issue concerns CPython's socket extension, but no current source file is named; start by reviewing issue8372.patch and the listed Linux test programs bindconn.c and accept.c. Reproduce the unterminated AF_UNIX case on Linux, then run the relevant socket tests and confirm bounded address handling without a buffer overrun.

索引モデルが issue の本文から書いたものです。

説明

3.7 (EOL) extension-modules topic-socket type-security

BPO	8372
Nosy	@loewis, @terryjreedy, @pitrou, @vstinner
Files	linux-pass-unterminated.diff: Allow non-null-terminated AF_UNIX addresses on Linux return-unterminated-2.x.diff: Stop at end of address as given by addrlen (2.x) return-unterminated-3.x.diff: Stop at end of address as given by addrlen (3.x) addrlen-2.x.diff: Don't use addrlen larger than original buffer (2.x) addrlen-3.x.diff: Don't use addrlen larger than original buffer (3.x) test-2.x.diff: Tests for Linux (2.x) test-3.x.diff: Tests for Linux (3.x) bindconn.c: Test program to bind to an address and connect to a server accept.c: Test program to accept connections and print the contents of sun_path issue8372.patch linux-pass-unterminated-4spc.diff return-unterminated-2.x-4spc.diff return-unterminated-3.x-4spc.diff addrlen-2.x-4spc.diff addrlen-3.x-4spc.diff test-2.x-new.diff test-3.x-new.diff addrlen-makesockaddr-2.x.diff addrlen-makesockaddr-3.x.diff return-unterminated-2.x-new.diff return-unterminated-3.x-maint-new.diff return-unterminated-3.x-trunk-new.diff enable-unterminated-2.7-2015-05-05.diff fix-overrun-2.7-2015-05-05.diff enable-unterminated-3.2-2015-05-05.diff fix-overrun-3.2-2015-05-05.diff enable-unterminated-3.3-2015-05-05.diff fix-overrun-3.3-2015-05-05.diff enable-unterminated-3.4-2015-05-05.diff fix-overrun-3.4-2015-05-05.diff enable-unterminated-3.5-2015-05-06.diff fix-overrun-3.5-2015-05-06.diff

BPO

8372

Nosy

@loewis, @terryjreedy, @pitrou, @vstinner

Files

linux-pass-unterminated.diff: Allow non-null-terminated AF_UNIX addresses on Linux

return-unterminated-2.x.diff: Stop at end of address as given by addrlen (2.x)

return-unterminated-3.x.diff: Stop at end of address as given by addrlen (3.x)

addrlen-2.x.diff: Don't use addrlen larger than original buffer (2.x)

addrlen-3.x.diff: Don't use addrlen larger than original buffer (3.x)

test-2.x.diff: Tests for Linux (2.x)

test-3.x.diff: Tests for Linux (3.x)

bindconn.c: Test program to bind to an address and connect to a server

accept.c: Test program to accept connections and print the contents of sun_path

issue8372.patch

linux-pass-unterminated-4spc.diff

return-unterminated-2.x-4spc.diff

return-unterminated-3.x-4spc.diff

addrlen-2.x-4spc.diff

addrlen-3.x-4spc.diff

test-2.x-new.diff

test-3.x-new.diff

addrlen-makesockaddr-2.x.diff

addrlen-makesockaddr-3.x.diff

return-unterminated-2.x-new.diff

return-unterminated-3.x-maint-new.diff

return-unterminated-3.x-trunk-new.diff

enable-unterminated-2.7-2015-05-05.diff

fix-overrun-2.7-2015-05-05.diff

enable-unterminated-3.2-2015-05-05.diff

fix-overrun-3.2-2015-05-05.diff

enable-unterminated-3.3-2015-05-05.diff

fix-overrun-3.3-2015-05-05.diff

enable-unterminated-3.4-2015-05-05.diff

fix-overrun-3.4-2015-05-05.diff

enable-unterminated-3.5-2015-05-06.diff

fix-overrun-3.5-2015-05-06.diff

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

Show more details

GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2010-04-11.18:33:03.587>
labels = ['type-security', 'extension-modules', '3.7']
title = 'socket: Buffer overrun while reading unterminated AF_UNIX\taddresses'
updated_at = <Date 2016-09-09.00:28:34.411>
user = 'https://bugs.python.org/baikie'

bugs.python.org fields:

activity = <Date 2016-09-09.00:28:34.411>
actor = 'BreamoreBoy'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Extension Modules']
creation = <Date 2010-04-11.18:33:03.587>
creator = 'baikie'
dependencies = []
files = ['16874', '16875', '16876', '16877', '16878', '16879', '16880', '16898', '16899', '18753', '18770', '18771', '18772', '18773', '18774', '18775', '18776', '22384', '22385', '22386', '22387', '22388', '39297', '39298', '39299', '39300', '39301', '39302', '39303', '39304', '39309', '39310']
hgrepos = []
issue_num = 8372
keywords = ['patch']
message_count = 20.0
messages = ['102861', '102964', '115595', '115606', '115615', '115669', '115673', '115716', '116112', '116178', '116226', '116234', '116236', '138213', '138214', '138224', '138472', '242577', '242621', '242695']
nosy_count = 7.0
nosy_names = ['loewis', 'terry.reedy', 'pitrou', 'vstinner', 'baikie', 'neologix', 'rosslagerwall']
pr_nums = []
priority = 'high'
resolution = None
stage = 'patch review'
status = 'open'
superseder = None
type = 'security'
url = 'https://bugs.python.org/issue8372'
versions = ['Python 2.7', 'Python 3.4', 'Python 3.5', 'Python 3.6', 'Python 3.7']

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