CVE-2022-36109 Moby vulnerability relating to supplementary group permissions
Attackers with container access can bypass group restrictions to escalate privileges, read sensitive data, or execute code within the container.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-36109?
CVE-2022-36109 is a medium-severity vulnerability in Fedoraproject Fedora, published on 9 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Moby is an open-source project created by Docker to enable software containerization. A bug was found in Moby (Docker Engine) where supplementary groups are not set up properly. If an attacker has direct access to a container and manipulates their supplementary group access, they may be able to use supplementary group access to bypass primary group restrictions in some cases, potentially gaining access to sensitive information or gaining the ability to execute code in that container. This bug is fixed in Moby (Docker Engine) 20.10.18. Running containers should be stopped and restarted for the permissions to be fixed. For users unable to upgrade, this problem can be worked around by not using the `"USER $USERNAME"` Dockerfile instruction. Instead by calling `ENTRYPOINT ["su", "-", "user"]` the supplementary groups will be set up properly.
Weakness: CWE-863
Which versions are affected by CVE-2022-36109?
3 open source packages ship an affected version, including github.com/docker/docker. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
github.com/docker/docker Go | All versions | 20.10.18 |
github.com/docker/docker Go | All versions | 20.10.18 |
github.com/docker/docker Go | All versions | 20.10.18+incompatible |
Linux distribution packages (21)
docker SUSE:Enterprise Storage 7 | All versions | 20.10.23_ce-150000.175.1 |
docker SUSE:Enterprise Storage 7.1 | All versions | 20.10.23_ce-150000.175.1 |
docker SUSE:Linux Enterprise High Performance Computing 15 SP1-LTSS | All versions | 20.10.23_ce-150000.175.1 |
docker SUSE:Linux Enterprise High Performance Computing 15 SP2-LTSS | All versions | 20.10.23_ce-150000.175.1 |
docker SUSE:Linux Enterprise High Performance Computing 15 SP3-ESPOS | All versions | 20.10.23_ce-150000.175.1 |
docker SUSE:Linux Enterprise High Performance Computing 15 SP3-LTSS | All versions | 20.10.23_ce-150000.175.1 |
docker SUSE:Linux Enterprise Micro 5.1 | All versions | 20.10.23_ce-150000.175.1 |
docker SUSE:Linux Enterprise Micro 5.2 | All versions | 20.10.23_ce-150000.175.1 |
docker SUSE:Linux Enterprise Micro 5.3 | All versions | 20.10.23_ce-150000.175.1 |
docker SUSE:Linux Enterprise Micro 5.4 | All versions | 20.10.23_ce-150000.175.1 |
docker SUSE:Linux Enterprise Module for Containers 12 | All versions | 20.10.23_ce-98.89.1 |
docker SUSE:Linux Enterprise Module for Containers 15 SP4 | All versions | 20.10.23_ce-150000.175.1 |
docker SUSE:Linux Enterprise Server 15 SP1-LTSS | All versions | 20.10.23_ce-150000.175.1 |
docker SUSE:Linux Enterprise Server 15 SP2-LTSS | All versions | 20.10.23_ce-150000.175.1 |
docker SUSE:Linux Enterprise Server 15 SP3-LTSS | All versions | 20.10.23_ce-150000.175.1 |
docker SUSE:Linux Enterprise Server for SAP Applications 15 SP1 | All versions | 20.10.23_ce-150000.175.1 |
docker SUSE:Linux Enterprise Server for SAP Applications 15 SP2 | All versions | 20.10.23_ce-150000.175.1 |
docker SUSE:Linux Enterprise Server for SAP Applications 15 SP3 | All versions | 20.10.23_ce-150000.175.1 |
docker openSUSE:Leap 15.4 | All versions | 20.10.23_ce-150000.175.1 |
docker openSUSE:Leap Micro 5.3 | All versions | 20.10.23_ce-150000.175.1 |
docker openSUSE:Tumbleweed | All versions | 20.10.23_ce-2.1 |
Products include Fedoraproject Fedora, Mobyproject Moby.
How do I fix CVE-2022-36109?
Upgrade github.com/docker/docker to a fixed version for your release line: 20.10.18 or 20.10.18+incompatible.
Is CVE-2022-36109 being exploited?
There is no known exploitation of CVE-2022-36109 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as CLEANSTART-2026-MS11283, DEBIAN-CVE-2022-36109, GHSA-rc4r-wh2q-q6c4, GO-2022-0985, OESA-2022-1936, SUSE-SU-2023:0795-1 and 4 more.