6.8

CVE-2021-3499: ovn ovn-kubernetes Incorrect Authorization

CVSS: 6.8v2.0MediumModified
AliasesGHSA-57v4-m9jx-mh8r
Published 02-06-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-3499 is a medium (CVSS 6.8) Incorrect Authorization vulnerability in ovn ovn-kubernetes. EPSS estimates a 0.80% chance of exploitation in the next 30 days, higher than 55.8% of scored vulnerabilities.

Overall risk
27/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.8/10
010
Medium · v2.0 (NVD)
EPSS score
0.80%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 02-06-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.80%

Chance of exploitation in the next 30 days

Percentile

56%

Versus all other CVEs

30-day change

0.00 pp

From 0.80% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.80%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Github.com/ovn-org1 product
  • ovn-kubernetes≤ 0.3.0
Ovn1 product

2 vendors · 2 products

References

5 links