What is CVE-2021-3499?

CVE-2021-3499 is a medium-severity vulnerability in Ovn Ovn-Kubernetes, classified under Incorrect Authorization. CVSS score: 5.6/10. Published 2021-06-02.

How severe is CVE-2021-3499?

Medium severity. CVSS v3 base score is 5.6 out of 10.

Auth bypass in Ovn Ovn-Kubernetes

CVE-2021-3499

A vulnerability was found in OVN Kubernetes in versions up to and including 0.3.0 where the Egress Firewall does not reliably apply firewall rules when there is multiple DNS rules. It could lead to potentially lose of confidentiality, integrity or availability of a service.

Vulnerability class: Broken Access Control

EPSS: 0.008 (52.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.

Affected products

Ovn Ovn-kubernetes
N/a Openshift/ovn-kubernetes — versions All ovn-kubernetes versions up to and including 0.3.0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

secalert@redhat.com (Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2021-3499?: CVE-2021-3499 is a medium-severity vulnerability in Ovn Ovn-Kubernetes, classified under Incorrect Authorization. CVSS score: 5.6/10. Published 2021-06-02.
How severe is CVE-2021-3499?: Medium severity. CVSS v3 base score is 5.6 out of 10.