Nicolas De Loof

CVE-2022-36109 WRITEUP MEDIUM WRITEUP

Moby - Privilege Escalation

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.

CVSS 5.3

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CVE-2025-62725 WRITEUP HIGH WRITEUP

Docker Compose < 2.40.2 - Path Traversal

Docker Compose trusts the path information embedded in remote OCI compose artifacts. When a layer includes the annotations com.docker.compose.extends or com.docker.compose.envfile, Compose joins the attacker‑supplied value from com.docker.compose.file/com.docker.compose.envfile with its local cache directory and writes the file there. This affects any platform or workflow that resolves remote OCI compose artifacts, Docker Desktop, standalone Compose binaries on Linux, CI/CD runners, cloud dev environments is affected. An attacker can escape the cache directory and overwrite arbitrary files on the machine running docker compose, even if the user only runs read‑only commands such as docker compose config or docker compose ps. This issue is fixed in v2.40.2.

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