vulnerability

Oracle Linux: CVE-2023-25809: ELSA-2023-6380: runc security update (MODERATE) (Multiple Advisories)

Severity
4
CVSS
(AV:L/AC:L/Au:S/C:P/I:P/A:P)
Published
03/29/2023
Added
07/20/2023
Modified
01/07/2025

Description

runc is a CLI tool for spawning and running containers according to the OCI specification. In affected versions it was found that rootless runc makes `/sys/fs/cgroup` writable in following conditons: 1. when runc is executed inside the user namespace, and the `config.json` does not specify the cgroup namespace to be unshared (e.g.., `(docker|podman|nerdctl) run --cgroupns=host`, with Rootless Docker/Podman/nerdctl) or 2. when runc is executed outside the user namespace, and `/sys` is mounted with `rbind, ro` (e.g., `runc spec --rootless`; this condition is very rare). A container may gain the write access to user-owned cgroup hierarchy `/sys/fs/cgroup/user.slice/...` on the host . Other users's cgroup hierarchies are not affected. Users are advised to upgrade to version 1.1.5. Users unable to upgrade may unshare the cgroup namespace (`(docker|podman|nerdctl) run --cgroupns=private)`. This is the default behavior of Docker/Podman/nerdctl on cgroup v2 hosts. or add `/sys/fs/cgroup` to `maskedPaths`.
A flaw was found in runc, where it is vulnerable to a denial of service caused by improper access control in the /sys/fs/cgroup endpoint. This flaw allows a local authenticated attacker to cause a denial of service.

Solution(s)

oracle-linux-upgrade-aardvark-dnsoracle-linux-upgrade-buildahoracle-linux-upgrade-buildah-testsoracle-linux-upgrade-cockpit-podmanoracle-linux-upgrade-conmonoracle-linux-upgrade-containernetworking-pluginsoracle-linux-upgrade-containers-commonoracle-linux-upgrade-container-selinuxoracle-linux-upgrade-critoracle-linux-upgrade-criuoracle-linux-upgrade-criu-develoracle-linux-upgrade-criu-libsoracle-linux-upgrade-crunoracle-linux-upgrade-fuse-overlayfsoracle-linux-upgrade-libslirporacle-linux-upgrade-libslirp-develoracle-linux-upgrade-netavarkoracle-linux-upgrade-oci-seccomp-bpf-hookoracle-linux-upgrade-podmanoracle-linux-upgrade-podman-catatonitoracle-linux-upgrade-podman-dockeroracle-linux-upgrade-podman-gvproxyoracle-linux-upgrade-podman-pluginsoracle-linux-upgrade-podman-remoteoracle-linux-upgrade-podman-testsoracle-linux-upgrade-python3-criuoracle-linux-upgrade-python3-podmanoracle-linux-upgrade-runcoracle-linux-upgrade-skopeooracle-linux-upgrade-skopeo-testsoracle-linux-upgrade-slirp4netnsoracle-linux-upgrade-udica
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