⌘ + K

GHSA-2mm7-x5h6-5pvq

Dashboard / Vulnerabilities / GHSA-2mm7-x5h6-5pvq

GHSA-2mm7-x5h6-5pvq

Published: 22 Apr 2024Last Modified: 10 Sept 2026

Aliases:

CVE-2022-24769

GO-2022-0390

Summary: Moby (Docker Engine) started with non-empty inheritable Linux process capabilities

Details: ### Impact A bug was found in Moby (Docker Engine) where containers were incorrectly started with non-empty inheritable Linux process capabilities, creating an atypical Linux environment and enabling programs with inheritable file capabilities to elevate those capabilities to the permitted set during `execve(2)`. Normally, when executable programs have specified permitted file capabilities, otherwise unprivileged users and processes can execute those programs and gain the specified file capabilities up to the bounding set. Due to this bug, containers which included executable programs with inheritable file capabilities allowed otherwise unprivileged users and processes to additionally gain these inheritable file capabilities up to the container's bounding set. Containers which use Linux users and groups to perform privilege separation inside the container are most directly impacted. This bug did not affect the container security sandbox as the inheritable set never contained more capabilities than were included in the container's bounding set. ### Patches This bug has been fixed in Moby (Docker Engine) 20.10.14. Users should update to this version as soon as possible. Running containers should be stopped, deleted, and recreated for the inheritable capabilities to be reset. This fix changes Moby (Docker Engine) behavior such that containers are started with a more typical Linux environment. Refer to `capabilities(7)` for a description of how capabilities work. Note that permitted file capabilities continue to allow for privileges to be raised up to the container's bounding set and that processes may add capabilities to their own inheritable set up to the container's bounding set per the rules described in the manual page. In all cases the container's bounding set provides an upper bound on the capabilities that can be assumed and provides for the container security sandbox. ### Workarounds The entrypoint of a container can be modified to use a utility like `capsh(1)` to drop inheritable capabilities prior to the primary process starting. ### Credits The Moby project would like to thank [Andrew G. Morgan](https://github.com/AndrewGMorgan) for responsibly disclosing this issue in accordance with the [Moby security policy](https://github.com/moby/moby/blob/master/SECURITY.md). ### For more information If you have any questions or comments about this advisory: * [Open an issue](https://github.com/moby/moby/issues/new) * Email us at [[email protected]](mailto:[email protected]) if you think you’ve found a security bug

Affected packages

Package

Name: github.com/moby/moby

Purl: pkg:golang/github.com/moby/moby

Affected ranges

Type: SEMVER

Events:

Introduced- 0

Fixed -20.10.14

Affected versions

Common Vulnerability Scoring System

Attack Vector

Network

Adjacent

Local

Physical

Privileges Required

None

Low

High

User Interaction

None

Required

Scope

Unchanged

Changed

Confidentiality

None

Low

High

Integrity

None

Low

High

Availability

None

Low

High