В получении разрешения отказано даже как root внутри docker контейнера - PullRequest
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В получении разрешения отказано даже как root внутри docker контейнера

0 голосов
/ 03 февраля 2020

При подключении к работающему контейнеру docker в качестве root по-прежнему отображается ошибка Операция не разрешена при попытке apt-get update, но я все еще вижу чувствительный файл, такой как /etc/passwd. Ниже приведены мои настройки, а также сообщение об ошибке от apt-get update. Моя операционная система хоста Ubuntu 18.04.3. Моя docker версия Docker version 19.03.5, build 633a0ea838

Я создаю контейнер со следующим Dockerfile 

FROM python:3.8-slim-buster
RUN useradd -ms /bin/bash andrej
WORKDIR /home/andrej
COPY . /home/andrej/

RUN apt-get update && \
    apt-get install -y gcc && \
    pip install -r requirements.txt && \
    apt-get remove -y gcc && apt-get -y autoremove

RUN chown andrej:andrej pycurl && \
    chmod 0744 pycurl

USER andrej
ENTRYPOINT ["uwsgi"]
CMD ["--ini", "uwsgi.ini"]

, начиная с docker, составляя его так: 

version: "3.3"

services:

  andrej-cv:
    build: ./andrej_cv
    container_name: andrej-cv
    restart: always
    security_opt:
      - no-new-privileges
    expose:
      - 5000
    healthcheck:
      test: ./pycurl --host=127.0.0.1 --port=5050 --uri=/health_check
      interval: 1m30s
      timeout: 10s
      retries: 3

My docker config daemon: 

{
    "icc": false,
    "userns-remap": "default",
    "log-driver": "syslog",
    "live-restore": true,
    "userland-proxy": false,
    "no-new-privileges": true
}

Я подключаюсь к контейнеру с помощью следующей команды (как root): docker exec -it -u root <container_hash> /bin/bash, но при попытке обновления я получил следующее: 

root@ed984abff684:/home/andrej# apt-get update 
E: setgroups 65534 failed - setgroups (1: Operation not permitted)
E: setegid 65534 failed - setegid (1: Operation not permitted)
E: seteuid 100 failed - seteuid (1: Operation not permitted)
E: setgroups 0 failed - setgroups (1: Operation not permitted)
Hit:1 http://deb.debian.org/debian buster InRelease
Ign:2 http://deb.debian.org/debian buster-updates InRelease
Err:4 http://deb.debian.org/debian buster-updates Release
  Could not open file /var/lib/apt/lists/partial/deb.debian.org_debian_dists_buster-updates_Release - open (13: Permission denied) [IP: 151.101.36.204 80]
Hit:3 http://security-cdn.debian.org/debian-security buster/updates InRelease
rm: cannot remove '/var/cache/apt/archives/partial/*.deb': Permission denied
Reading package lists... Done
W: chown to _apt:root of directory /var/lib/apt/lists/partial failed - SetupAPTPartialDirectory (1: Operation not permitted)
W: chmod 0700 of directory /var/lib/apt/lists/partial failed - SetupAPTPartialDirectory (1: Operation not permitted)
W: chown to _apt:root of directory /var/lib/apt/lists/auxfiles failed - SetupAPTPartialDirectory (1: Operation not permitted)
W: chmod 0700 of directory /var/lib/apt/lists/auxfiles failed - SetupAPTPartialDirectory (1: Operation not permitted)
E: setgroups 65534 failed - setgroups (1: Operation not permitted)
E: setegid 65534 failed - setegid (1: Operation not permitted)
E: seteuid 100 failed - seteuid (1: Operation not permitted)
W: Download is performed unsandboxed as root as file '/var/lib/apt/lists/partial/deb.debian.org_debian_dists_buster_InRelease' couldn't be accessed by user '_apt'. - pkgAcquire::Run (13: Permission denied)
E: setgroups 0 failed - setgroups (1: Operation not permitted)
W: Problem unlinking the file /var/lib/apt/lists/partial/deb.debian.org_debian_dists_buster_InRelease - PrepareFiles (13: Permission denied)
W: Problem unlinking the file /var/lib/apt/lists/partial/deb.debian.org_debian_dists_buster-updates_InRelease - PrepareFiles (13: Permission denied)
W: Problem unlinking the file /var/lib/apt/lists/partial/deb.debian.org_debian_dists_buster-updates_Release - PrepareFiles (13: Permission denied)
E: The repository 'http://deb.debian.org/debian buster-updates Release' no longer has a Release file.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: Problem unlinking the file /var/lib/apt/lists/partial/security.debian.org_debian-security_dists_buster_updates_InRelease - PrepareFiles (13: Permission denied)

В контейнере /etc/subuid и /etc/subgid выглядят так (оба): 

andrej:100000:65536

На хосте /etc/subuid и /etc/subgid выглядят так (оба): 

andrej:100000:65536
dockremap:165536:65536

Apparmor работает на хосте Ubuntu со следующим статусом (только профиль docker-default): 

andrej@machine:/etc/apparmor.d$ sudo aa-status 
apparmor module is loaded.
38 profiles are loaded.
36 profiles are in enforce mode.
   /sbin/dhclient
   /snap/core/8268/usr/lib/snapd/snap-confine
   /snap/core/8268/usr/lib/snapd/snap-confine//mount-namespace-capture-helper
   /usr/bin/evince
   /usr/bin/evince-previewer
   /usr/bin/evince-previewer//sanitized_helper
   /usr/bin/evince-thumbnailer
   /usr/bin/evince//sanitized_helper
   /usr/bin/man
   /usr/lib/NetworkManager/nm-dhcp-client.action
   /usr/lib/NetworkManager/nm-dhcp-helper
   /usr/lib/connman/scripts/dhclient-script
   /usr/lib/cups/backend/cups-pdf
   /usr/lib/snapd/snap-confine
   /usr/lib/snapd/snap-confine//mount-namespace-capture-helper
   /usr/sbin/cups-browsed
   /usr/sbin/cupsd
   /usr/sbin/cupsd//third_party
   /usr/sbin/ippusbxd
   /usr/sbin/tcpdump
   docker-default
   libreoffice-senddoc
   libreoffice-soffice//gpg
   libreoffice-xpdfimport
   man_filter
   man_groff
   snap-update-ns.core
   snap-update-ns.gnome-calculator
   snap-update-ns.gnome-characters
   snap-update-ns.gnome-logs
   snap-update-ns.gnome-system-monitor
   snap.core.hook.configure
   snap.gnome-calculator.gnome-calculator
   snap.gnome-characters.gnome-characters
   snap.gnome-logs.gnome-logs
   snap.gnome-system-monitor.gnome-system-monitor
2 profiles are in complain mode.
   libreoffice-oopslash
   libreoffice-soffice
17 processes have profiles defined.
14 processes are in enforce mode.
   docker-default (1101) 
   docker-default (1102) 
   docker-default (1111) 
   docker-default (1600) 
   docker-default (1728) 
   docker-default (1729) 
   docker-default (1730) 
   docker-default (1731) 
   docker-default (1732) 
   docker-default (1798) 
   docker-default (1799) 
   docker-default (1800) 
   docker-default (1801) 
   docker-default (1802) 
0 processes are in complain mode.
3 processes are unconfined but have a profile defined.
   /sbin/dhclient (491) 
   /usr/sbin/cups-browsed (431) 
   /usr/sbin/cupsd (402)

Se linux Кажется, он отключен, поскольку нет файла /etc/selinux/config, а команды getenfoce и sestatus недоступны.

Также команда su andrej выполняется как root (где andrej является непривилегированным пользователем в контейнере ) ошибки с su: cannot set groups: Operation not permitted

...