Hello Umer, I believe this is working as intended. By default Ubuntu users in the admin or sudo group have full privileges on the system via sudo.
If you can reproduce this without being in either of these groups, please re-open, attach your sudoers(5) file, and a terminal transcript showing id(1) output and the problem. Thanks ** Package changed: unity (Ubuntu) => sudo (Ubuntu) -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to sudo in Ubuntu. https://bugs.launchpad.net/bugs/1751129 Title: I think there is some security issue in my ubuntu . Status in sudo package in Ubuntu: Incomplete Bug description: If I log into any other user i am able to access my main user through terminal with my current user password. I am using ubuntu 16.04 and I think it might be in all ubuntu 16.04 operating systems. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: unity 7.4.5+16.04.20171201.3 Uname: Linux 4.15.1-041501-generic x86_64 .tmp.unity_support_test.0: ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,staticswitcher,workarounds,scale,expo,ezoom,dbus] CompositorRunning: compiz CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0' CompositorUnredirectFSW: true CurrentDesktop: Unity Date: Fri Feb 23 01:06:34 2018 DistUpgraded: Fresh install DistroCodename: xenial DistroVariant: ubuntu DkmsStatus: bbswitch, 0.8, 4.13.0-32-generic, x86_64: installed bbswitch, 0.8, 4.15.1-041501-generic, x86_64: installed nvidia-384, 384.111, 4.13.0-32-generic, x86_64: installed nvidia-384, 384.111, 4.15.1-041501-generic, x86_64: installed virtualbox, 5.0.40, 4.13.0-32-generic, x86_64: installed ExecutablePath: /usr/bin/compiz GconfCompiz: /apps/compiz-1/general: /apps/compiz-1/general/screen0: /apps/compiz-1/general/screen0/options: active_plugins = [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,staticswitcher,workarounds,scale,expo,ezoom,dbus] GraphicsCard: Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 0b) (prog-if 00 [VGA controller]) Subsystem: Hewlett-Packard Company Haswell-ULT Integrated Graphics Controller [103c:198f] InstallationDate: Installed on 2018-01-22 (31 days ago) InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801) MachineType: Hewlett-Packard HP EliteBook 840 G1 ProcEnviron: PATH=(custom, user) SHELL=/bin/bash LANG=en_IN LANGUAGE=en_IN:en XDG_RUNTIME_DIR=<set> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.1-041501-generic root=UUID=95af4278-a5ad-4183-9691-2a68fd0e627e ro resume=UUID=a7e7e167-65b7-4b78-ad75-4400e9b38bad resume= resume= quiet splash vt.handoff=7 SourcePackage: unity UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/01/2015 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: L71 Ver. 01.33 dmi.board.name: 198F dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 15.57 dmi.chassis.asset.tag: CNU4219GQQ dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvrL71Ver.01.33:bd09/01/2015:svnHewlett-Packard:pnHPEliteBook840G1:pvrA3009FD10303:rvnHewlett-Packard:rn198F:rvrKBCVersion15.57:cvnHewlett-Packard:ct10:cvr: dmi.product.family: 103C_5336AN G=N L=BUS B=HP S=ELI dmi.product.name: HP EliteBook 840 G1 dmi.product.version: A3009FD10303 dmi.sys.vendor: Hewlett-Packard version.compiz: compiz 1:0.9.12.3+16.04.20171116-0ubuntu1 version.ia32-libs: ia32-libs N/A version.libdrm2: libdrm2 2.4.83-1~16.04.1 version.libgl1-mesa-dri: libgl1-mesa-dri 17.2.8-0ubuntu0~16.04.1 version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A version.libgl1-mesa-glx: libgl1-mesa-glx 17.2.8-0ubuntu0~16.04.1 version.xserver-xorg-core: xserver-xorg-core N/A version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati N/A version.xserver-xorg-video-intel: xserver-xorg-video-intel N/A version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A xserver.bootTime: Thu Feb 22 21:34:13 2018 xserver.configfile: default xserver.errors: xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.19.5-0ubuntu2~16.04.1 xserver.video_driver: modeset To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/sudo/+bug/1751129/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
