Skip to content

ingress-nginx component for Kubernetes allows file overwrite

Moderate severity GitHub Reviewed Published May 24, 2022 to the GitHub Advisory Database • Updated Aug 22, 2023

Package

gomod k8s.io/ingress-nginx (Go)

Affected versions

< 0.28.0

Patched versions

0.28.0

Description

The Kubernetes ingress-nginx component prior to version 0.28.0 allows a user with the ability to create namespaces and to read and create ingress objects to overwrite the password file of another ingress which uses nginx.ingress.kubernetes.io/auth-type: basic and which has a hyphenated namespace or secret name.

References

Published by the National Vulnerability Database Jul 29, 2020
Published to the GitHub Advisory Database May 24, 2022
Reviewed Jul 13, 2023
Last updated Aug 22, 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
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

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:H/UI:N/S:U/C:H/I:H/A:N

EPSS score

0.090%
(40th percentile)

Weaknesses

CVE ID

CVE-2020-8553

GHSA ID

GHSA-hhpm-74pm-hf35

Source code

Loading Checking history
See something to contribute? Suggest improvements for this vulnerability.