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getaddrinfo invalid port number #74896

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getaddrinfo invalid port number#74896
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3.7 (EOL)end of lifeextension-modulesC modules in the Modules dirtopic-socketRelated to the socket, socketserver and selectors modulestype-bugAn unexpected behavior, bug, or error

Description

@smejkar
smejkar
mannequin
opened on Jun 20, 2017
BPO 30711
Nosy @smejkar
PRs
  • bpo-30711: getaddrinfo invalid port number #2436
    		•

    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 = None
created_at = <Date 2017-06-20.13:26:15.605>
labels = ['extension-modules', 'type-bug', '3.7']
title = 'getaddrinfo invalid port number'
updated_at = <Date 2017-06-27.11:24:31.770>
user = 'https://github.com/smejkar'

    bugs.python.org fields:

    activity = <Date 2017-06-27.11:24:31.770>
actor = 'smejkar'
assignee = 'none'
closed = False
closed_date = None
closer = None
components = ['Extension Modules']
creation = <Date 2017-06-20.13:26:15.605>
creator = 'smejkar'
dependencies = []
files = []
hgrepos = []
issue_num = 30711
keywords = ['patch']
message_count = 3.0
messages = ['296423', '296737', '297021']
nosy_count = 1.0
nosy_names = ['smejkar']
pr_nums = ['2436']
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue30711'
versions = ['Python 3.7']

    Activity

    1. smejkar commented on Jun 20, 2017

      @smejkar
      smejkarmannequin
      on Jun 20, 2017
      MannequinAuthor

      Some getaddrinfo implementations do not detect invalid numeric services and blindly pass the port number to htons(). For example, service "960179" is returned as port 42675.

      glibc
      https://sourceware.org/bugzilla/show_bug.cgi?id=16208
      https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/posix/getaddrinfo.c;h=a8bdd9a1829409bd797637b2c4fca4d67a11012d;hb=HEAD#l435
      https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/posix/getaddrinfo.c;h=a8bdd9a1829409bd797637b2c4fca4d67a11012d;hb=HEAD#l2313

      AIX 7.1 libc
      Broken

      Modules/getaddrinfo
      https://github.com/python/cpython/blob/master/Modules/getaddrinfo.c#L342

      On the other hand, for example, OpenBSD and musl check the port range
      https://github.com/openbsd/src/blob/master/lib/libc/asr/getaddrinfo_async.c#L477
      https://git.musl-libc.org/cgit/musl/tree/src/network/lookup_serv.c#n53

      Modules/getaddrinfo should be fixed.

      The configure script should detect whether the system getaddrinfo is broken. If so, a wrapper that checks numeric services, and returns EAI_SERVICE or calls the system getaddrinfo should be used in place of the system getaddrinfo.

    2. smejkar
      added
      stdlibStandard Library Python modules in the Lib/ directory
      3.7 (EOL)end of life
      type-bugAn unexpected behavior, bug, or error
      extension-modulesC modules in the Modules dir
      and removed
      stdlibStandard Library Python modules in the Lib/ directory
      on Jun 20, 2017

    3. smejkar commented on Jun 23, 2017

      @smejkar
      smejkarmannequin
      on Jun 23, 2017
      MannequinAuthor

      See also bpo-30710.

    4. smejkar commented on Jun 27, 2017

      @smejkar
      smejkarmannequin
      on Jun 27, 2017
      MannequinAuthor

      See also bpo-30786.

    5. ezio-melotti
      transferred this issue fromon Apr 10, 2022
    6. serhiy-storchaka
      added
      topic-socketRelated to the socket, socketserver and selectors modules
      on Jul 3, 2026
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