docker unshare operation not permitted

The only option seems to change the Docker container runtime to use a different seccomp profile, e.g. E: Failed to unshare: Operation not permitted Here is my config.yml: version: 2 jobs: build: docker: - image: debian:stretch steps: - checkout - run: apt update - run: apt install -y sudo wget - run: name: Change script permissions command: sudo chmod u+x create-targz-x64.sh - run: name: Build command: sudo ./create-targz-x64.sh Launching the CI/CD and R Collectives and community editing features for Is there an equivalent of 'which' on the Windows command line? Making statements based on opinion; back them up with references or personal experience. 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. Hopefully, this feature will graduate to beta in Kubernetes 1.24, which would make it more widely available. Or rather, when I look . He has also presented at major containerization conferences and is an author of the CIS Benchmarks for Docker and Kubernetes and main author of the Mastering Container Security training course which has been delivered at numerous industry conferences including Blackhat USA. I tried to give the /public/assests folder and also the complete /public order the correct permissions, but failed. Indeed, it is not allowed, and fails with: unshare: unshare failed: Operation not permitted. Thanks in advance for helping. I see what looks like a docker compose file here, but Im a little clueless. PTIJ Should we be afraid of Artificial Intelligence? Elf File Headers. Here's an edited diff -y to illustrate. This filter should be in place by default for all Docker installations. Why did the Soviets not shoot down US spy satellites during the Cold War? Already gated by, Restrict process inspection capabilities, already blocked by dropping, Deny loading a new kernel for later execution. Try not to create the container from WSL, use the power shell from windows instead. When and how was it discovered that Jupiter and Saturn are made out of gas? However, one of the researchers who found it has posted a proof of concept showing a container breakout, and it's expected that exploit code will be released soon. I am using docker build to compile a simple Go (Golang) program, which I then want to package into a .sif Singularity container file. The table includes From containers/buildah#1901, it seems a system call, that's forbidden by default with the Docker container runtime, is still necessary when the user has no CAP_SYS_ADMIN in the container.. Sci fi book about a character with an implant/enhanced capabilities who was hired to assassinate a member of elite society. I am using docker build to compile a simple Go (Golang) program, which I then want to package into a .sif Singularity container file. We can see this by running a standard Docker container: . A possible work-around would be to use Kaniko instead of Buildah. I tried to install camel-k following the operatorhub and this. privacy statement. However, for Kubernetes, some additional work will be needed. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. To do this, the attacker must have a specific Linux capability, CAP_SYS_ADMIN, which reduces the risk of breakout in some container cases. Silverstripe Version: 4.7 I am trying to set up SilverStripe with Docker for development. $ docker run -rm -it alpine sh / # unshare -map-root-user -user. 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.. Copyright 2022 Aqua Security Software Ltd. CVE-2022-0185 in Linux Kernel Can Allow Container Escape in Kubernetes, At the moment, there is no public exploit code for this issue. seccomp and disables around 44 system calls out of 300+. Deny retrieval of exported kernel and module symbols. Try removing it and seeing whether that helps. unshare --user --mount /bin/true: operation not permitted Summary 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). What are the consequences of overstaying in the Schengen area by 2 hours? Connect and share knowledge within a single location that is structured and easy to search. Also gated by. Maybe that's a clue. docker run --security . Deny loading potentially persistent bpf programs into kernel, already gated by, Time/date is not namespaced. In that new shell it's then possible to mount and use FUSE. restrict the actions available within the container. He has worked in the Information and IT Security arena for the last 20 years in a variety of roles. to your account. In kernel x86 real mode virtual machine. 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. Also gated by, Should be a privileged operation. privacy statement. But even doing that doesn't seem to fix the problem. Also gated by. To learn more, see our tips on writing great answers. @astefanutti I think we should create a "troubleshooting" page with this kind of information. For individual workloads, the seccomp setting can be put in place in the securityContext field of the workload definition. Quota syscall which could let containers disable their own resource limits or process accounting. This filter should be in place by default for all Docker installations. If my extrinsic makes calls to other extrinsics, do I need to include their weight in #[pallet::weight(..)]? Also gated by. You can use it to Postgres in WSL 2 - : Operation not permitted when I share volumes enter windows folder. In one RHCSA practice exercise, the task ask to run a container (ubi7) with a non-root user (user60 let's say). docker will keep the permissions when it copies the files. I believe it must be something with permission in the windows folder. Sign in Looks like a path issue with the volume mapping. Im using Windows WSL2 Sub system to emulate Linux on a VM. Userspace page fault handling, largely needed for process migration. I sended this file to other machine that runs a linux based system. Emulate/Simulate iOS in Linux. To check if your kernel What factors changed the Ukrainians' belief in the possibility of a full-scale invasion between Dec 2021 and Feb 2022? To learn more, see our tips on writing great answers. Also gated by, Dont let containers reboot the host. But this is what I got after looking for the integrationplatform: @madmesi the cluster-setup option only performs CRDs and cluster roles installation. Is lock-free synchronization always superior to synchronization using locks? protective while providing wide application compatibility. Recently, there was interest in running containerised workloads. What is the best way to deprotonate a methyl group? I've pulled Docker PHP image. Tracing/profiling syscall, which could leak a lot of information on the host. Our product teams collect and evaluate feedback from a number of different sources. Not the answer you're looking for? Have a question about this project? Thanks for contributing an answer to Stack Overflow! E.g., sshfs user@host:directory /mnt cc-wr mentioned this issue on May 30, 2021 Reevaluate the default seccomp policy on clone and unshare moby/moby#42441 In a standard Docker environment, use of the unshare command is blocked by Docker's seccomp filter, which blocks the syscall used by this command. I suspect this is caused by Buildah running into a container runtime that's too much constrained. We can see this by running a standard Docker container: docker run -it ubuntu:20.04 /bin/bashroot@4e22094edd46:/# unshareunshare: unshare failed: Operation not permitted. 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. The problem does not occur when I unmount the volume on . profile. How to draw a truncated hexagonal tiling? You can use this The table below lists the significant (but not all) syscalls that So, my question is, how can I restore my volume without this permission issues? Not inherently dangerous, but poorly tested, potential for a lot of kernel vulns. I dont think youre actually the container root, but you can do a lot of things. However, for Kubernetes, some additional work will be needed. Significant syscalls blocked by the default profile, Accounting syscall which could let containers disable their own resource limits or process accounting. TrueNAS uid,gid (Debian--->Docker--->qBittorrent: Operation not permitted) Is the set of rational points of an (almost) simple algebraic group simple? Aqua customers are among the worlds largest enterprises in financial services, software, media, manufacturing and retail, with implementations across a broad range of cloud providers and modern technology stacks spanning containers, serverless functions and cloud VMs. AppArmor profiles are applied on file system paths to . If singularity --version says singularity-ce, submit instead to https://github.com/sylabs/singularity, otherwise submit to https://github.com/apptainer/apptainer. All of this has worked well for us. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Also gated by, Deny manipulation and functions on kernel modules. If you need to be a real root then it might be that Docker wont work for your use case. Making statements based on opinion; back them up with references or personal experience. How to copy files from host to Docker container? In a standard Docker environment, use of the unshare command is blocked by Dockers seccomp filter, which blocks the syscall used by this command. Run without the default seccomp profile 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. When he's not working, Rory can generally be found out walking and enjoying the scenery of the Scottish highlands. However, this is currently an alpha feature, so it requires an opt-in feature flag. This works because you create a named volume that is located inside Docker and not in the Windows file system. Otherwise, what container runtime is used in you cluster. Right now, it breaks before it finishes making the .sif file. Id start off with removing sudo - in general, in this container environment, you have a lot of permissions already. 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. I'd try with a fully-qualified path first just to verify: Thanks for contributing an answer to Stack Overflow! Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. and I still don't know which one helps me to create the integration. Rory is a Cloud Native Security Advocate at Aqua. Next, the profile defines a specific list of system calls which are fully 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 <. I have made a backup to a tar file using the command below and all seeing to work. 542), We've added a "Necessary cookies only" option to the cookie consent popup. The file access is as the user which is great. Initially had. You can change back to the sonarqube user after fixing the permissions. defaultAction of SCMP_ACT_ERRNO and overriding that action only for specific Sign up for a free GitHub account to open an issue and contact its maintainers and the community. note - I already set up networking in this docker container (IP address which I want). 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 . I've just created #1595 for it. rev2023.3.1.43266. To learn more about how we use customer feedback in the planning process, check out our new feature policy. I can use Linux namespaces as this user via terminal without issue: When this same command is put into my .gitlab-ci.yaml file and executed via the gitlab runner, it errors as follows: (note that rootrunner has sudo privilege), It would appear that this error is produced when running the gitlab-runner as a systemd service. Why did the Soviets not shoot down US spy satellites during the Cold War? Sign in When I try to restore my volume with the command below, Im getting the error message: Cannot utime: Operation not permitted . Cause of an old container breakout. It looks like I hit this same error previously here but it was never resolved and the Issue was Closed. You signed in with another tab or window. Can anyone hold my hand on getting this working? Deny manipulation and functions on kernel modules. It The seccomp() system Asking for help, clarification, or responding to other answers. Somehow, I also want to save the .sif file to the host system, though I have not gotten that far. These virtual nodes are assigned CPU and memory limits. I'm a bit confused here. A work-around is to use other builder strategy, like Kaniko or Spectrum, with kamel install --build-publish-strategy=kaniko or by editing your IntegrationPlatform directly. Applications of super-mathematics to non-super mathematics. Documentation has been provided with #1627. He is an active member of the container security community having delivered presentations at a variety of IT and Information security conferences. Somehow, I also want to save the .sif file to the host system, though I have not gotten that far. allowed, because their action is overridden to be SCMP_ACT_ALLOW. I already try to restore the volume using user and group tags (root) in docker command and in the untar command, but no sucess. Docker: Copying files from Docker container to host. The base Docker image contains an SSSD setup that binds to our AD so users run their jobs with their own credentials. Im almost sure this problem is related to permission issues in the process of untar the volume. Also gated by. What is the arrow notation in the start of some lines in Vim? By clicking Sign up for GitHub, you agree to our terms of service and Obsolete since Linux 3.1. I'm having trouble sharing the linux volume to a folder that is on windows. Prevent containers from using the kernel keyring, which is not namespaced. kernel is configured with CONFIG_SECCOMP enabled. supports seccomp: The default seccomp profile provides a sane default for running containers with How to force Docker for a clean build of an image. Retracting Acceptance Offer to Graduate School. Launching the CI/CD and R Collectives and community editing features for How can I get the max heap size of a Java process? So you may remove that option to have the operator set up. Where thats not possible, there are some other options to reduce the risk of container escapes using this vulnerability. I have made a backup to a tar file using the command below and all seeing to work. Since the kernel won't reveal its secrets, you must become a detective to learn why your container will not run. Older syscall related to shared libraries, unused for a long time. Cheers! I have a Docker image that I use as a build server to build a Docker image for my web application. First, organizations should minimize the use of privileged containers that will have access to CAP_SYS_ADMIN. is not recommended to change the default seccomp profile. How to get a Docker container's IP address from the host, Docker: Copying files from Docker container to host. At the moment, there is no public exploit code for this issue. Already on GitHub? some specific rules are for individual system calls such as personality, and others, Obsolete. What I did was this: Later on you probably gonna need to prune your volume. How to Add User in Supergroup of Hdfs in Linux Right now, it breaks before it finishes making the .sif file. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. I'm facing this error -. Docker's default seccomp profile is an allowlist which specifies the calls that are allowed. We can see the difference by running a container in Kubernetes: kubectl run -it ubutest2 --image=ubuntu:20.04 /bin/bash. In the Docker container run unshare -c --keep-caps -m to open a shell in new unprivileged user and mount namespaces. I'm trying to use Docker on Windows through Docker Toolbox, but I'm struggling to make it work. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, Confirmed working using host network interfaces directly. Syscall that modifies kernel memory and NUMA settings. Find centralized, trusted content and collaborate around the technologies you use most. There's also a plan to allow cluster operators to enable a seccomp profile by default for all workloads in a cluster. . to your account. Can patents be featured/explained in a youtube video i.e. error. Thanks Guys for responding. But in many Kubernetes clusters, it's likely that an attacker could exploit this issue. This is a completely different file system and many file attributes are missing. At this point, it's important to note that when Docker (or other CRIs) are . This is a fantastic find and really helped me out. 4 Answers. Since Docker makes use of Linux kernel, AppArmor can also be used with Docker containers. Not namespaced: Operation not permitted when I unmount the volume on for. 'M struggling to make it work Restrict process inspection capabilities, already blocked by the docker unshare operation not permitted profile accounting. Operators to enable a seccomp profile, e.g run unshare -c -- keep-caps -m to open shell... Cpu and memory limits, some additional work will be needed copy and paste this URL into your RSS.! As the user which is not recommended to change the Docker container:, already blocked by the seccomp. It must be something with permission in the planning process, check out our new feature policy great! Some specific rules are for individual system calls out of gas the complete /public order the correct permissions but! The complete /public order the correct permissions, but im a little clueless it finishes making the file! A number of different sources the /public/assests folder and also the complete /public order the permissions... For Kubernetes, some additional work will be needed, trusted content and collaborate the... Also be used with Docker for development back them up with references or personal experience create integration. Make it more widely available to host windows WSL2 Sub system to emulate Linux on a VM Stack. A long time and I still do n't know which one helps me to the! If singularity -- Version says singularity-ce, submit instead to https:,. Seeing to work generally be found out walking and enjoying the scenery of the container root but. Already blocked by dropping, Deny loading potentially persistent bpf programs into kernel, gated! Profile is an active member of the workload definition user and mount namespaces )! Native Security Advocate at Aqua but I 'm trying to use Docker windows! Wont work for your use case page with this kind of Information web application instead to:... Would make it more widely available I 'd try with a fully-qualified path just... I 'm struggling to make it more widely available this filter should be in place default... Having delivered presentations at a variety of it and Information Security conferences, you agree to terms. Possible work-around would be to use Kaniko instead of Buildah the container community! Applied on file system paths to Docker Toolbox, but poorly tested, potential a! That are allowed the best way to deprotonate a methyl group might that! You have a Docker container to host ; user contributions licensed under CC BY-SA it more widely available RSS... Can do a lot of things run -rm -it alpine sh / # unshare -map-root-user -user under CC BY-SA Information! Rory can generally be found out walking and enjoying the scenery of the Scottish highlands ; m having sharing!, so it requires an opt-in feature flag because you create a named volume that is on.... Seccomp setting can be put in place in the start of some in... Of different sources that does n't seem to fix the problem does not when! A named volume that is on windows great answers to emulate Linux on a VM many attributes! Can generally be found out walking and enjoying the scenery of the container WSL... Reduce the risk of container escapes using this vulnerability fully-qualified path first just to:... This point, it & # x27 ; ve pulled Docker PHP image have the operator up! Is currently an alpha feature, so it requires an opt-in feature flag I think we should create a volume. A fantastic find and really helped me out community editing features for how can I get the max size! Older syscall related to permission issues in the process of untar the volume on default profile, e.g that. Are applied on file system and many file attributes are missing evaluate feedback from a number different... Machine that runs a Linux based system your RSS reader Cloud Native Security Advocate Aqua. By default for all Docker installations later on you probably gon na need to be SCMP_ACT_ALLOW application! Not allowed, and others, Obsolete unprivileged user and mount namespaces Supergroup of Hdfs in right! Last 20 years in a variety of it and Information Security conferences resolved the... Process inspection capabilities, already gated by, should be in place in windows! Syscall, which could let containers reboot the host system, though I have a lot permissions. Can do a lot of Information on the host system, though I not..., some additional work will be needed think youre actually the container from WSL, the. Discovered that Jupiter and Saturn are made out of 300+ widely available docker unshare operation not permitted are... Mount and use FUSE let containers disable their own resource limits or process accounting to answers. Jupiter and Saturn are made out of gas at a variety of roles R! Ci/Cd and R Collectives and community editing features for how can I get the max heap of. Such as personality, and fails with: unshare failed: Operation not permitted I. Power shell from windows instead a build server to build a Docker image that I use as build. A single location that is located inside Docker and not in the area! This by running a container in Kubernetes 1.24, which could let containers disable their own resource limits process... Kernel keyring, which is great synchronization docker unshare operation not permitted superior to synchronization using locks for! Operator set up networking in this container environment, you agree to our AD users! Change back to the host, though I have not gotten that far can this! To copy files from Docker container to host userspace page fault handling, largely needed for process migration tested! In Kubernetes 1.24, which could let containers disable their own credentials & # x27 ; s possible., e.g, privacy policy and cookie policy for your use case im a little.! Out our new feature policy only '' option to the host, Docker: Copying files from Docker container IP! Our product teams collect and evaluate feedback from a number of different sources and all seeing to work the permissions... That Jupiter and Saturn are made out of gas cookie consent popup containerised workloads but poorly tested potential. Disable their own resource limits or process accounting and not in the windows file system system paths to your. What is the best way to deprotonate a methyl group and easy to search backup to a tar using. Alpine sh / # unshare -map-root-user -user knowledge within a single location that is on windows through Docker,... Seccomp profile by default for all Docker installations ( IP address which want! Docker will keep the permissions to be a privileged Operation, though I have not gotten far. General, in this Docker container to host process migration for your use case workloads in a cluster own.! Docker makes use of Linux kernel, already blocked by dropping, Deny loading a new kernel later. And share knowledge within a single location that is on windows plan to allow cluster operators to a! This file to other machine that runs a Linux based system you create a named volume that located! But even doing that does n't seem to fix the problem does occur... Know which one helps me to create the container from WSL, use the power from! Me to create the integration later execution others, Obsolete he has in! Need to prune your volume features for how can I get the max heap of! Run their jobs with their own resource limits or process accounting by the default,... Great answers possible to mount and use FUSE that is located inside Docker and in! Workload definition or responding to other answers all seeing to work fails with: unshare failed: Operation not.... Web application long time the cluster-setup option only performs CRDs and cluster roles installation this container environment, agree. Fails with: unshare: unshare: unshare failed: Operation not permitted this! Dangerous, but you can use it to Postgres in WSL 2 -: Operation permitted., use the power shell from windows instead Linux volume to a folder is! Jobs with their own resource limits or process accounting first, organizations should the., which is great at Aqua 've added a `` troubleshooting '' page with kind! Think youre actually the container from WSL, use the power shell from windows instead networking in container. Could exploit this issue are for individual system calls such as personality, and fails with: unshare failed Operation... Your RSS reader be used with Docker for development, because their action overridden. I unmount the volume mapping to search used with Docker containers lock-free synchronization always superior to synchronization using?. Problem is related to shared libraries, unused for a long time securityContext field of the container from,... A VM specific rules are for individual system calls out of 300+ is as the user which great. Significant syscalls blocked by the default seccomp profile, e.g containerised workloads already set up silverstripe with Docker for.. That binds to our terms of service, privacy policy and cookie policy on! Gon na need to prune your volume risk of container escapes using this vulnerability teams and... Docker ( or other CRIs ) are it was never resolved and the issue was.. Was it discovered that Jupiter and Saturn are made out of 300+ of Linux,... Untar the volume on files from host to docker unshare operation not permitted container public exploit code for issue! Specifies the calls that are allowed much constrained and Saturn are made out of 300+ of some lines Vim... The cookie consent popup through Docker Toolbox, but I 'm trying to use Docker on windows the operatorhub this.
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