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Improper Input Validation

Moderate severity GitHub Reviewed Published Jun 8, 2021 to the GitHub Advisory Database • Updated Feb 13, 2023

Package

gomod github.com/ovn-org/ovn-kubernetes (Go)

Affected versions

<= 0.3.0

Patched versions

None

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

References

Reviewed May 28, 2021
Published by the National Vulnerability Database Jun 2, 2021
Published to the GitHub Advisory Database Jun 8, 2021
Last updated Feb 13, 2023

Severity

Moderate

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

EPSS score

0.094%
(41st percentile)

Weaknesses

CVE ID

CVE-2021-3499

GHSA ID

GHSA-57v4-m9jx-mh8r

Source code

No known source code
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