When I inspect the file using 7-zip, I can see that the files have no user assigned and root group assigned to them. How to copy Docker images from one host to another without using a repository. Cheers! You signed in with another tab or window. I already try to restore the volume using user and group tags (root) in docker command and in the untar command, but no sucess. I tried to install camel-k following the operatorhub and this. Since Docker makes use of Linux kernel, AppArmor can also be used with Docker containers. Once we have the container running, we can check which capabilities are present by installing and using the pscap utility: root@ubutest2:/# pscap -appid pid name command capabilities0 1 root bash chown, dac_override, fowner, fsetid, kill, setgid, setuid, setpcap, net_bind_service, net_raw, sys_chroot, mknod, audit_write, setfcap. The only option seems to change the Docker container runtime to use a different seccomp profile, e.g. Can anyone hold my hand on getting this working? What is behind Duke's ear when he looks back at Paul right before applying seal to accept emperor's request to rule? Sign up for a free GitHub account to open an issue and contact its maintainers and the community. /# unshare unshare: unshare failed: Operation not permitted. But even doing that doesn't seem to fix the problem. My Gitlab runner is unable to call unshare(1), e.g, unshare --user --mount /bin/true (move the process into a new user and mount namespace). I am using docker build to compile a simple Go (Golang) program, which I then want to package into a .sif Singularity container file. It is moderately I've pulled Docker PHP image. As reported in the command documentation, unshare requires the CAP_SYS_ADMIN capability to work and perform the actions. Does Cosmic Background radiation transmit heat? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. It is unclear if this is an intended security feature or a bug. Error during unshare(): Operation not permitted. is not recommended to change the default seccomp profile. unshare: unshare(0x10000000): Operation not permitted / # . This filter should be in place by default for all Docker installations. Tracing/profiling arbitrary processes is already blocked by dropping. However, for Kubernetes, some additional work will be needed. kamel install --registry=myregistry.example.com --force. $ docker run -rm -it alpine sh / # unshare -map-root-user -user. In a standard Docker environment, use of the, Once we have the container running, we can check which capabilities are present by installing and using the, ppid pid name command capabilities, 0 1 root bash chown, dac_override, fowner, fsetid, kill, setgid, setuid, setpcap, net_bind_service, net_raw, sys_chroot, mknod, audit_write, setfcap, At the moment, the relevant capability is not present. profile can be found windows. Sign in I had to add the capabilities "NET_ADMIN" and "SYS_MODULE" and I had to set some environment variables in the configuration of the wireguard-container. How to Add User in Supergroup of Hdfs in Linux This can be done by setting a sysctls on the host without rebooting, although care is required to ensure that it does not disrupt the operation of the system. At the moment, there is no public exploit code for this issue. I therefore thought of running the containers with Singularity. specifies a policy: Dockers default seccomp profile is an allowlist which specifies the calls that rev2023.3.1.43266. Thanks, that confirms Buildah with the Docker container runtime is the problem. If you are on mac resolve the issue by giving files and folder permissions to docker or the other workaround is to manually copying the files to docker instead of mounting them. system calls. which matches the unshare(2) documentation: EPERM (since Linux 3.9) CLONE_NEWUSER was specified in flags and the caller is in a chroot environment (i.e., the caller's root directory does not match the root directory of the mount namespace in which it . Elf File Headers. AppArmor is not built for Docker but it's a Linux security tool. Deny retrieval of exported kernel and module symbols. This non-root user has the home directory in an autofs share in another VM (some previous practice exam task). When considering whether this vulnerability could be exploited to escape from a standard containerized environment, we can look at the vulnerability notification that had this section: Exploitation relies on the CAP_SYS_ADMIN capability; however, the permission only needs to be granted in the current namespace. Error: after doing echo 2147483647 > /proc/sys/user/max_user_namespaces on all nodes error changed to: Is there something that I've missed? Finally, By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. The seccomp() system When I inspect the file using 7-zip, I can see that the files have no user assigned and root group assigned to them. Obsolete. What tool to use for the online analogue of "writing lecture notes on a blackboard"? Docker Toolbox uses Git Bash for the terminal, which uses /c as the root of the C: drive: So your /$(pwd) is prepdening an extra forward slash. . How is Docker different from a virtual machine? This works because you create a named volume that is located inside Docker and not in the Windows file system. How is Docker different from a virtual machine? Somehow, I also want to save the .sif file to the host system, though I have not gotten that far. seccomp and disables around 44 system calls out of 300+. Share Improve this answer Follow edited Aug 17, 2022 at 7:35 answered Aug 17, 2022 at 7:33 white walker 21 3 This is a fantastic find and really helped me out. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. error. I have a docker volume created in a windows system. So you may remove that option to have the operator set up. It sounds like this needs to be run on the nodes In that case, switch to the Machine executor - that is a real VM rather than a containerised environment. Cheers! To do this, the attacker must have a specific Linux capability, CAP_SYS_ADMIN, which reduces the risk of breakout in some container cases. Launching the CI/CD and R Collectives and community editing features for How can I get the max heap size of a Java process? By clicking Sign up for GitHub, you agree to our terms of service and How to get a Docker container's IP address from the host, Docker: Copying files from Docker container to host. Next, the profile defines a specific list of system calls which are fully When I try to restore my volume with the command below, Im getting the error message: Cannot utime: Operation not permitted . to allow variants of those system calls with specific arguments. Try not to create the container from WSL, use the power shell from windows instead. Im using Windows WSL2 Sub system to emulate Linux on a VM. The table below lists the significant (but not all) syscalls that The problem does not occur when I unmount the volume on file compose. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. default, then allowlists specific system calls. 542), We've added a "Necessary cookies only" option to the cookie consent popup. I see what looks like a docker compose file here, but Im a little clueless. The suggestion to use the --privileged flag does not work with docker build, only with docker run. In one RHCSA practice exercise, the task ask to run a container (ubi7) with a non-root user (user60 let's say). Singularity seems happy to run inside of the (CentOS 7-based) virtual worker node container and nicely inherits the resource limits. An unprivileged user can use unshare(CLONE_NEWNS|CLONE_NEWUSER) to enter a namespace with the CAP_SYS_ADMIN permission, and then proceed with exploitation to root the system.. The table includes the reason each syscall is blocked rather than white-listed. docker run --security . AppArmor profiles are applied on file system paths to . Since the kernel won't reveal its secrets, you must become a detective to learn why your container will not run. protective while providing wide application compatibility. @lburgazzoli right, good idea. Blocked in Linux kernel versions before 4.8 to avoid seccomp bypass. When you run a container, it uses the default profile unless you override it Already gated by, Prevent containers from modifying kernel I/O privilege levels. I suspect this is caused by Buildah running into a container runtime that's too much constrained. You can use this Already on GitHub? Cause of an old container breakout. As before, let's see what happens when running the command in a container without adding the capability. You can use it to For individual workloads, the seccomp setting can be put in place in the, There's also a plan to allow cluster operators to enable a seccomp profile by default for all workloads in a cluster. How to force Docker for a clean build of an image. Maybe that's a clue. Also gated by. Copyright 2013-2023 Docker Inc. All rights reserved. Thanks been battling all day , permissions , running the container in windows terminal then stopping it and running it in WSL2 fixed the issue for me. Also gated by, Deny start/stop swapping to file/device. Docker : How to avoid Operation not permitted in Docker Container? Hopefully, this feature will graduate to beta in Kubernetes 1.24, which would make it more widely available. Is there a way to only permit open-source mods for my video game to stop plagiarism or at least enforce proper attribution? seccomp is instrumental for running Docker containers with least privilege. Ive removed sudo and I still get the same error, Powered by Discourse, best viewed with JavaScript enabled, E: Failed to unshare: Operation not permitted. I just solved the problem with the message "RTNETLINK answers: Operation not permitted". ERROR : Failed to unshare root file system: Operation not permitted. Indeed, it is not allowed, and fails with: unshare: unshare failed: Operation not permitted. the reason each syscall is blocked rather than white-listed. Sign up for a free GitHub account to open an issue and contact its maintainers and the community. I can easily spawn the workflow containers from the virtual nodes on the host Docker engine with the same resource limits (and since these are running as children of the worker node containers it usefully dovetails with Slurm's view of things) but, naturally, all the workflow file access would be as root which is unworkable. All of this has worked well for us. Making statements based on opinion; back them up with references or personal experience. But in many Kubernetes clusters, it's likely that an attacker could exploit this issue. For unprivileged containers, ensuring that a seccomp filter is in place that blocks the unshare call will reduce the risk. Let me close this. However, the advisory also notes that unprivileged users could exploit this vulnerability by using the unshare Linux command to enter a new namespace, where they can get the capability to allow exploitation of this issue. A possible work-around would be to use Kaniko instead of Buildah. When he's not working, Rory can generally be found out walking and enjoying the scenery of the Scottish highlands. are patent descriptions/images in public domain? Why does pressing enter increase the file size by 2 bytes in windows, Torsion-free virtually free-by-cyclic groups. These virtual nodes are assigned CPU and memory limits. Is the set of rational points of an (almost) simple algebraic group simple? stefano@stefano falco % docker run -it alpine:latest / # unshare unshare: unshare (0x0): Operation not permitted Run without the default seccomp profile file system: Operation not permitted" is exactly the behavior I see if I run singularity inside a docker container that was created without the --privileged option. We can see the difference by running a container in Kubernetes: kubectl run -it ubutest2 --image=ubuntu:20.04 /bin/bash. I'd try with a fully-qualified path first just to verify: Thanks for contributing an answer to Stack Overflow! Mount current directory as a volume in Docker on Windows 10. Also gated by. Thanks Guys for responding. Try removing it and seeing whether that helps. The open-source game engine youve been waiting for: Godot (Ep. Making statements based on opinion; back them up with references or personal experience. The default Docker [rootrunner]$ unshare --user --mount /bin/true, Running with gitlab-runner development version (HEAD), Reinitialized existing Git repository in /home/rootrunner/builds/hQMQ73My/0/j-ogas/gitlab-ci-unshare/.git/, From https://gitlab.com/j-ogas/gitlab-ci-unshare, c16c667..e896659 master -> origin/master, unshare: unshare failed: Operation not permitted, register your project to the runner with your project token (see runner config above). How to Change Rvm Install Location. Launching the CI/CD and R Collectives and community editing features for Is there an equivalent of 'which' on the Windows command line? I'm trying to use Docker on Windows through Docker Toolbox, but I'm struggling to make it work. DB | chmod: changing permissions of /var/lib/postgresql/data: Operation not permitted DB exited with code 1. 4 Answers. If my extrinsic makes calls to other extrinsics, do I need to include their weight in #[pallet::weight(..)]? What are some tools or methods I can purchase to trace a water leak? Prevent container from enabling BSD emulation. It is unclear if this is an intended security feature or a bug. I am trying to build a Singularity container inside of a Docker container multi-stage build. Container Security, kamel install --registry https://myregistry.example.com/v2 --registry-auth-username YOUR_USERNAME --registry-auth-password SECRET_PASSWORD --build-publish-strategy=Kaniko --cluster-setup. last on left, earlier on right: VERBOSE Set messagelevel to: 5 VERBOSE Set messagelevel to: 5, DEBUG PIPE_EXEC_FD value: 7 DEBUG PIPE_EXEC_FD value: 7, VERBOSE Container runtime VERBOSE Container runtime, VERBOSE Check if we are running as setuid VERBOSE Check if we are running as setuid, DEBUG Drop privileges DEBUG Drop privileges, DEBUG Read json configuration from pipe DEBUG Read json configuration from pipe, DEBUG Set child signal mask DEBUG Set child signal mask, DEBUG Create socketpair for smaster communication chann DEBUG Create socketpair for smaster communication chann, DEBUG Wait C and JSON runtime configuration from sconta DEBUG Wait C and JSON runtime configuration from sconta, DEBUG Set parent death signal to 9 DEBUG Set parent death signal to 9, VERBOSE Spawn scontainer stage 1 VERBOSE Spawn scontainer stage 1, VERBOSE Get root privileges VERBOSE Get root privileges, DEBUG Set parent death signal to 9 DEBUG Set parent death signal to 9, DEBUG Entering in scontainer stage 1 DEBUG Entering in scontainer stage 1, VERBOSE Execute scontainer stage 1 VERBOSE Execute scontainer stage 1, DEBUG Entering scontainer stage 1 DEBUG Entering scontainer stage 1, DEBUG Entering image format intializer DEBUG Entering image format intializer, DEBUG Check for image format sif DEBUG Check for image format sif, DEBUG Receiving configuration from scontainer stage 1 DEBUG Receiving configuration from scontainer stage 1, DEBUG Wait completion of scontainer stage1 DEBUG Wait completion of scontainer stage1, DEBUG Create RPC socketpair for communication between sc | srun: error: slurmd4xsacnodez1000: task 0: Exited with exit c, VERBOSE Spawn smaster process <, DEBUG Set parent death signal to 9 <, VERBOSE Spawn scontainer stage 2 <, VERBOSE Create mount namespace <, VERBOSE Spawn RPC server <, VERBOSE Execute smaster process <.