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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (17.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 17.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Podman Project
- Red Hat Enterprise Linux — versions 7.0, 8.0
- Red Hat Openshift Container Platform — versions 3.11
- Podman — versions podman 1.7.0
Weakness classification (CWE)
References
- bugzilla.redhat.com/show_bug.cgi (Patch, 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.