Auth bypass in Podman Project
CVE-2021-20188
A flaw was found in podman before 1.7.0. File permissions for non-root users running in a privileged container are not correctly checked. This flaw can be abused by a low-privileged user inside the container to access any other file in the container, even if owned by the root user inside the container. It does not allow to directly escape the container, though being a privileged container means that a lot of security features are disabled when running the container. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
Vulnerability class: Broken Access Control
EPSS: 0.003 (18.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Podman_project Podman
- Redhat Enterprise_linux — versions 7.0, 8.0
- Redhat Openshift_container_platform — versions 3.11
- N/a Podman — versions podman 1.7.0
Weakness classification (CWE)
References
- secalert@redhat.com (Patch, x_refsource_MISC, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-20188?
- CVE-2021-20188 is a high-severity vulnerability in Podman Project, classified under Incorrect Authorization. CVSS score: 7.0/10. Published 2021-02-11.
- How severe is CVE-2021-20188?
- High severity. CVSS v3 base score is 7.0 out of 10.