CVE-2021-20188
Improper Authorization in github.com/containers/libpod
Description
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.
How to fix CVE-2021-20188
To remediate CVE-2021-20188, upgrade the affected package to a fixed version below.
- —upgrade to 2.0.2+dfsg1-3 or later
- —upgrade to 1.7.0 or later
- —upgrade to 1.7.0 or later
Is CVE-2021-20188 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 2.0.2+dfsg1-3
- from 0, < 1.7.0
- from 0, < 1.7.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.0 | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |