현재 sudo
비밀번호를 묻는 메시지가 표시되지만 그 이후에는 아무 일도 일어나지 않습니다. 어떤 종류의 오류도 없습니다.
sudoers 파일을 확인한 후 visudo 구문 검사를 통과했습니다. 설정은 다음과 같습니다.
#
# This file MUST be edited with the 'visudo' command as root.
#
# Please consider adding local content in /etc/sudoers.d/ instead of
# directly modifying this file.
#
# See the man page for details on how to write a sudoers file.
#
Defaults env_reset
Defaults secure_path="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
# Host alias specification
# User alias specification
# Cmnd alias specification
# User privilege specification
root ALL=(ALL:ALL) ALL
# Members of the admin group may gain root privileges
%admin ALL=(ALL) ALL
# Allow members of group sudo to execute any command
%sudo ALL=(ALL:ALL) ALL
# See sudoers(5) for more information on "#include" directives:
#includedir /etc/sudoers.d
파일 권한이 0440입니다. 본인 sudo
과 admin
그룹 에 본인을 추가했습니다 .
Sudo를 사용하려고 할 때의 모습은 다음과 같습니다.
kml@rhythmsdev:/etc$ sudo apt-get update
kml@rhythmsdev:/etc$
보시다시피, 전혀 오류가 없습니다. 프롬프트로 돌아갑니다.
파일 권한은 다음과 같습니다
-r--r----- 1 root root 723 Feb 1 10:10 sudoers
sudoers.d
drwxr-xr-x 2 root root 4096 Feb 4 16:46 .
다음은 id
Sudo가 작동하도록하려는 사용자 중 하나의 결과입니다 .
uid=1010(kml) gid=102(develop) groups=102(develop),4(adm),27(sudo),106(admin),110(ftp)
업그레이드를 수행 한 방법
do-release-upgrade -d
SSH 를 통해 업그레이드를 수행 했지만 복도를 통해 물리적으로 액세스 할 수있었습니다.
/etc/sources.list의 내용은 다음과 같습니다.
#
# deb cdrom:[Ubuntu-Server 10.04 LTS _Lucid Lynx_ - Release i386 (20100427)]/ lucid main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.
deb http://us.archive.ubuntu.com/ubuntu/ precise main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ precise main restricted
## Major bug fix updates produced after the final release of the
## distribution.
deb http://us.archive.ubuntu.com/ubuntu/ precise-updates main restricted
deb-src http://us.archive.ubuntu.com/ubuntu/ precise-updates main restricted
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team. Also, please note that software in universe WILL NOT receive any
## review or updates from the Ubuntu security team.
deb http://us.archive.ubuntu.com/ubuntu/ precise universe
deb-src http://us.archive.ubuntu.com/ubuntu/ precise universe
deb http://us.archive.ubuntu.com/ubuntu/ precise-updates universe
deb-src http://us.archive.ubuntu.com/ubuntu/ precise-updates universe
## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://us.archive.ubuntu.com/ubuntu/ precise multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ precise multiverse
deb http://us.archive.ubuntu.com/ubuntu/ precise-updates multiverse
deb-src http://us.archive.ubuntu.com/ubuntu/ precise-updates multiverse
## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://us.archive.ubuntu.com/ubuntu/ lucid-backports main restricted universe multiverse
# deb-src http://us.archive.ubuntu.com/ubuntu/ lucid-backports main restricted universe multiverse
## Uncomment the following two lines to add software from Canonical's
## 'partner' repository.
## This software is not part of Ubuntu, but is offered by Canonical and the
## respective vendors as a service to Ubuntu users.
# deb http://archive.canonical.com/ubuntu lucid partner
# deb-src http://archive.canonical.com/ubuntu lucid partner
deb http://security.ubuntu.com/ubuntu precise-security main restricted
deb-src http://security.ubuntu.com/ubuntu precise-security main restricted
deb http://security.ubuntu.com/ubuntu precise-security universe
deb-src http://security.ubuntu.com/ubuntu precise-security universe
deb http://security.ubuntu.com/ubuntu precise-security multiverse
deb-src http://security.ubuntu.com/ubuntu precise-security multiverse
# deb http://security.ubuntu.com/ubuntu maverick-security main universe
디렉토리 : /etc/apt/sources.list.d
비어 있습니다.
lsb_release -a
이다
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 12.04.1 LTS
Release: 12.04
Codename: precise
apt-cache policy sudo
입니다 :
sudo:
Installed: 1.8.3p1-1ubuntu3.3
Candidate: 1.8.3p1-1ubuntu3.3
Version table:
*** 1.8.3p1-1ubuntu3.3 0
500 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages
100 /var/lib/dpkg/status
1.8.3p1-1ubuntu3.2 0
500 http://security.ubuntu.com/ubuntu/ precise-security/main i386 Packages
1.8.3p1-1ubuntu3 0
500 http://us.archive.ubuntu.com/ubuntu/ precise/main i386 Packages
type -a sudo
이다
sudo is /usr/bin/sudo
sha256sum $(which sudo)
이다
0efd358e04ea07dc73b67642d9bb85f49143c65996a7c88a57b42557a0b0a50d /usr/bin/sudo
pkexec echo success
이것을했다 :
==== AUTHENTICATING FOR org.freedesktop.policykit.exec ===
Authentication is needed to run `/bin/echo' as the super user
Multiple identities can be used for authentication:
1. My Name,,, (me)
2. ,Account used for Git,, (git)
3. Coworker1,,, (cw1)
4. Coworker2,,, (cw2)
5. Coworker3,,, (cw3)
6. My Name,,, (me)
7. Coworker4,,, (cw4)
8. Coworker5,,, (cw5)
9. ,Account used for Git,, (git)
Choose identity to authenticate as (1-9): 1
Password:
==== AUTHENTICATION COMPLETE ===
success
대부분 무고한 사람들을 보호하기 위해 이름이 변경되었습니다. 어떤 이유로 두 번 나타납니다. 그러나 다른 동료 중 누구도 Sudo (어쨌든 사전 업그레이드 할 수있는)를 사용할 수 없습니다.
다음은 몇 가지 추가 명령의 출력입니다.
sudoers 파일을 visudo하고 kml ALL=(ALL:ALL) ALL
루트 행에 추가
sudo -i echo success
이전과 동일하게 아무것도 반환하지 않았습니다.
echo foo | sudo tee foo.txt; ls -l foo.txt
산출 :
ls: cannot access foo.txt: No such file or directory
Sudo를 다시 설치하는 방법
나는 이것을 두 번 달성했다.
내가 처음 뛰었을 때-
apt-get install --reinstall sudo
루트에서
그것은 거의 달성하지 못했기 때문에 먼저 apt-get uninstall sudo
다음을 통해 제거
했습니다.
apt-get install sudo
추가 정보 수정, 다시 시작
sudo
비밀번호 인증 후 자동으로 돌아가고 다시 묻지 않습니다.
sudo -k
그리고 sudo -K
또한 자동으로 실패 내가 루트로, 그것은 정상적인 계정에 암호를 입력하라는 메시지가 기록되었다.
더 많은 정보 2
나는 달렸다 tail -f /var/log/auth.log
다음은 sudo ls
kml 계정에서 얻은 결과입니다.
Feb 6 16:33:27 rhythmsdev sudo: pam_unix(sudo:session): session opened for user root by kml(uid=1010)
Feb 6 16:33:27 rhythmsdev sudo: pam_unix(sudo:session): session closed for user root
잘못된 비밀번호를 시도하면 새 비밀번호를 입력하라는 메시지가 표시되고
Feb 6 16:35:17 rhythmsdev sudo: pam_unix(sudo:auth): authentication failure; logname=kml uid=1010 euid=0 tty=/dev/pts/0 ruser=kml rhost= user=kml
ed3
sudo apt-get clean && sudo apt-get update && sudo apt-get --purge --reinstall install sudo
Sudo는 여전히 작동하지 않습니다. 출력은 다음과 같습니다
apt-get install --purge --reinstall sudo
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
mono-2.0-gac libxcb-aux0 python-fstab libgnomekbd4 libts-0.0-0 libwpd8c2a libcdio10 xsltproc pnm2ppa librpmbuild0 libcolamd2.7.1 lp-solve libglitz-glx1 openoffice.org-writer libntfs10 python-gnome2 libxcb-render-util0 libevent-1.4-2
gnome-media gnome-desktop-data libgtk-vnc-1.0-0 libgnomepanel2.24-cil xulrunner-1.9.2 libxcb-event1 libindicator0 linux-headers-2.6.32-38 libicu42 openoffice.org-draw libdbusmenu-glib1 ubufox python-aptdaemon-gtk openoffice.org-gtk
libsilc-1.1-2 libgnome-media0 libbeagle1 g++-4.4 libexchange-storage1.2-3 libgraphite3 libwpg-0.1-1 libibus1 libproxy0 libnm-util1 python-gtksourceview2 libevview2 scrollkeeper libindicate-gtk2 libwebkit-1.0-2
libmono-system-runtime2.0-cil libpisock9 libdns64 libcamel1.2-14 bcmwl-modaliases librpmio0 librpm0 libgnome2-perl libaccess-bridge-java-jni libstdc++6-4.4-dev libeggdbus-1-0 libnspr4-0d libgtkhtml-editor0 esound-common
python-pyorbit gdebi-core libnotify1 python-telepathy libedata-cal1.2-6 libaccess-bridge-java libdevkit-power-gobject1 gnome-media-common librasqal2 libpango1.0-common ubuntuone-client-gnome cups-driver-gutenprint libgadu3
openoffice.org-style-human libmono-cairo2.0-cil libisccc60 cpu-checker libgweather1 python-gtkspell libgnome-bluetooth7 libxxf86misc1 libloudmouth1-0 libsexy2 libxcb-atom1 libido-0.1-0 libgmime2.4-cil compiz-plugins libffi5
libgnome-pilot2 libdirectfb-1.2-0 openoffice.org-style-galaxy libgssdp-1.0-2 libcryptui0 finger libmusicbrainz4c2a python-pyatspi libgp11-0 libjs-mootools python-webkit libgcr0 libqt4-webkit libcdio-cdda0 libhunspell-1.2-0 liblwres60
libgmp3c2 libgtksourceview2.0-common openoffice.org-math libhal1 libgtksourceview2.0-0 hal libgnome2-vfs-perl libprotobuf5 libesd0 openoffice.org-common libegroupwise1.2-13 libdbusmenu-gtk1 libgsf-1-common gnome-doc-utils
libecal1.2-7 at-spi libpoppler5 libgmime-2.4-2 libgdata1.2-1 libedataserver1.2-11 libhal-storage1 libpython2.6 gnome-system-monitor libmldbm-perl libbind9-60 libimobiledevice0 libgtkmm-2.4-1c2a libglitz1 libevdocument2
libgdata-google1.2-1 libspeechd2 fglrx-modaliases libnunit2.4-cil libclutter-gtk-0.10-0 libebook1.2-9 libmagickcore2 libaudiofile0 libwps-0.1-1 libedataserverui1.2-8 nvidia-173-modaliases libphonon4 libgnome-window-settings1
libedata-book1.2-2 libgdata6 libxss1 libgs8 openoffice.org-emailmerge libappindicator0 liblpint-bonobo0 ntfsprogs libjpeg62 libgtkhtml-editor-common libqt4-designer libmpfr1ldbl libcdio-paranoia0 libmysqlclient16 libmagickwand2
libisccfg60 libfreezethaw-perl smartdimmer libgupnp-1.0-3 screen-resolution-extra libnl1 libanthy0 tsconf liboobs-1-4 libgucharmap7 libgksu2-0 libdb4.7 libsilcclient-1.1-3 libindicate4 libndesk-dbus-glib1.0-cil libraptor1 python-wnck
liboil0.3 libebackend1.2-0 firefox-branding hal-info speech-dispatcher libgnome-desktop-2-17 fuse-utils python-desktopcouch gwibber libisc60 libnice0 linux-headers-2.6.32-38-generic libnautilus-extension1 compiz-fusion-plugins-main
gnome-applets-data min12xxw libwebkit-1.0-common libavahi-ui0 libprotoc5 nvidia-96-modaliases libavahi-core6 libgupnp-igd-1.0-2 libgnome2-canvas-perl libgtkhtml3.14-19 libgsf-1-114 python-rdflib gnome-panel-data libpoppler-glib4
libpisync1 libdotconf1.0 python-indicate
Use 'apt-get autoremove' to remove them.
0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 16 not upgraded.
Need to get 292 kB of archives.
After this operation, 0 B of additional disk space will be used.
Get:1 http://us.archive.ubuntu.com/ubuntu/ precise-updates/main sudo i386 1.8.3p1-1ubuntu3.3 [292 kB]
Fetched 292 kB in 0s (742 kB/s)
(Reading database ... 310429 files and directories currently installed.)
Preparing to replace sudo 1.8.3p1-1ubuntu3.3 (using .../sudo_1.8.3p1-1ubuntu3.3_i386.deb) ...
Unpacking replacement sudo ...
Processing triggers for ureadahead ...
Processing triggers for man-db ...
Setting up sudo (1.8.3p1-1ubuntu3.3) ...
편집 4
sha256sum /usr/lib/sudo/sudoers.so /usr/lib/sudo/sudo_noexec.so
결과
6f2e56e05d9a3de942558255b72d59a147be2c637247e244c365838378fe6ec3 /usr/lib/sudo/sudoers.so
7db6a45129ec1ef6d4cb21d7a488a85f5b45e4d21990116f64c9e71f116648c0 /usr/lib/sudo/sudo_noexec.so
다른 사용자로서의 Sudo (루트로 실행)
root@rhythmsdev:/home/kml# sudo -u kml echo success
root@rhythmsdev:/home/kml#
편집 5
엘리야 케이건에서 제공하는 스크립트를 사용하여 여기에 내가 중복 그룹 & ID의 검사. 모든 차이가 공백으로 나타납니다.
편집 6
strace echo success
여기
편집 7
root@rhythmsdev:/home/kml# sudo echo success
root@rhythmsdev:/home/kml# echo $?
1
편집 8
이것은 흥미로운 것처럼 보입니다. 이것은 sudo가 작동하는 서버와 다릅니다
root@rhythmsdev:/home/kml# sudo -l
Matching Defaults entries for root on this host:
env_reset,
secure_path=/usr/local/sbin\:/usr/local/bin\:/usr/sbin\:/usr/bin\:/sbin\:/bin
User root may run the following commands on this host:
(ALL : ALL) ALL
(ALL) ALL
root@rhythmsdev:/home/kml#
그게 루트 야
나처럼 (뿌리가 아님)
kml@rhythmsdev:~$ sudo -l
[sudo] password for kml:
Matching Defaults entries for kml on this host:
env_reset,
secure_path=/usr/local/sbin\:/usr/local/bin\:/usr/sbin\:/usr/bin\:/sbin\:/bin
User kml may run the following commands on this host:
(ALL : ALL) ALL
(ALL) ALL
(ALL : ALL) ALL
kml@rhythmsdev:~$
감사합니다,
나는 현재 아이디어가 신선합니다.
sudo -u kml echo success
루트가 아닌 사용자로부터 아무 일도 발생하지 않습니다. 내가 할 경우 sudo -k echo success
내가 암호를 입력하라는 메시지가 얻을 후 아무 반응이 없습니다.