CVE-2024-21626
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- CVE-2024-21626
CVE Details
| Release Date: | 2024-01-31 | |
| Impact: | Important | What is this? |
Description
A file descriptor leak issue was found in the runc package. While a user performs `O_CLOEXEC` all file descriptors before executing the container code, the file descriptor is open when performing `setcwd(2)`, which means that the reference can be kept alive in the container by configuring the working directory to be a path resolved through the file descriptor. The non-dumpable bit is unset after `execve`, meaning there are multiple ways to attack this other than bad configurations. The only way to defend against it entirely is to close all unneeded file descriptors.
See more information about CVE-2024-21626 from MITRE CVE dictionary and NIST NVD
NOTE: The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 metrics
| Base Score: | 8.6 |
| Vector String: | CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
| Version: | 3.0 |
| Attack Vector: | Local |
| Attack Complexity: | Low |
| Privileges Required: | None |
| User Interaction: | Required |
| Scope: | Changed |
| Confidentiality Impact: | High |
| Integrity Impact: | High |
| Availability Impact: | High |
Errata information
| Platform | Errata | Release Date |
| Oracle Linux version 7 (runc) | ELSA-2024-12148 | 2024-02-09 |
| Oracle Linux version 7 (runc) | ELSA-2024-17931 | 2024-02-09 |
| Oracle Linux version 8 (aardvark-dns) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (buildah) | ELSA-2024-0748 | 2024-02-14 |
| Oracle Linux version 8 (buildah) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (cockpit-podman) | ELSA-2024-0748 | 2024-02-14 |
| Oracle Linux version 8 (cockpit-podman) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (conmon) | ELSA-2024-0748 | 2024-02-14 |
| Oracle Linux version 8 (conmon) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (container-selinux) | ELSA-2024-0748 | 2024-02-14 |
| Oracle Linux version 8 (container-selinux) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (containernetworking-plugins) | ELSA-2024-0748 | 2024-02-14 |
| Oracle Linux version 8 (containernetworking-plugins) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (containers-common) | ELSA-2024-0748 | 2024-02-14 |
| Oracle Linux version 8 (containers-common) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (criu) | ELSA-2024-0748 | 2024-02-14 |
| Oracle Linux version 8 (criu) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (crun) | ELSA-2024-0748 | 2024-02-14 |
| Oracle Linux version 8 (crun) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (fuse-overlayfs) | ELSA-2024-0748 | 2024-02-14 |
| Oracle Linux version 8 (fuse-overlayfs) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (libslirp) | ELSA-2024-0748 | 2024-02-14 |
| Oracle Linux version 8 (libslirp) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (netavark) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (oci-seccomp-bpf-hook) | ELSA-2024-0748 | 2024-02-14 |
| Oracle Linux version 8 (oci-seccomp-bpf-hook) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (podman) | ELSA-2024-0748 | 2024-02-14 |
| Oracle Linux version 8 (podman) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (python-podman) | ELSA-2024-0748 | 2024-02-14 |
| Oracle Linux version 8 (python-podman) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (runc) | ELSA-2024-0748 | 2024-02-14 |
| Oracle Linux version 8 (runc) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (skopeo) | ELSA-2024-0748 | 2024-02-14 |
| Oracle Linux version 8 (skopeo) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (slirp4netns) | ELSA-2024-0748 | 2024-02-14 |
| Oracle Linux version 8 (slirp4netns) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 8 (udica) | ELSA-2024-0748 | 2024-02-14 |
| Oracle Linux version 8 (udica) | ELSA-2024-0752 | 2024-02-14 |
| Oracle Linux version 9 (runc) | ELSA-2024-0670 | 2024-02-05 |
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