CVE-2021-20188

HIGH
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1915734

Details

Source: MITRE

Published: 2021-02-11

Updated: 2021-02-17

Type: CWE-863

Risk Information

CVSS v2

Base Score: 6.9

Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C

Impact Score: 10

Exploitability Score: 3.4

Severity: MEDIUM

CVSS v3

Base Score: 7

Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 1

Severity: HIGH

Tenable Plugins

View all (8 total)

IDNameProductFamilySeverity
147170Oracle Linux 8 : container-tools:2.0 (ELSA-2021-0706)NessusOracle Linux Local Security Checks
high
147166Oracle Linux 8 : container-tools:1.0 (ELSA-2021-0705)NessusOracle Linux Local Security Checks
high
147009RHEL 8 : container-tools:2.0 (RHSA-2021:0710)NessusRed Hat Local Security Checks
high
146964CentOS 8 : container-tools:1.0 (CESA-2021:0705)NessusCentOS Local Security Checks
high
146963CentOS 8 : container-tools:2.0 (CESA-2021:0706)NessusCentOS Local Security Checks
high
146956RHEL 8 : container-tools:1.0 (RHSA-2021:0705)NessusRed Hat Local Security Checks
high
146950RHEL 8 : container-tools:2.0 (RHSA-2021:0706)NessusRed Hat Local Security Checks
high
146932RHEL 7 : podman (RHSA-2021:0681)NessusRed Hat Local Security Checks
high