CVE-2021-25746

CVSS V2 Medium 5.5 CVSS V3 High 7.1
Description
A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use .metadata.annotations in an Ingress object (in the networking.k8s.io or extensions API group) to obtain the credentials of the ingress-nginx controller. In the default configuration, that credential has access to all secrets in the cluster.
Overview
  • CVE ID
  • CVE-2021-25746
  • Assigner
  • jordan@liggitt.net
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-05-06T01:15:09
  • Last Modified Date
  • 2022-12-02T23:05:30
Weakness Enumerations
CWE URL
CWE-20 http://cwe.mitre.org/data/definitions/20.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:kubernetes:ingress-nginx:*:*:*:*:*:*:*:* 1 OR 1.2.0
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:S/C:P/I:P/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 5.5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8
  • Impact Score
  • 4.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 7.1
  • Base Severity
  • HIGH
  • Exploitability Score
  • 2.8
  • Impact Score
  • 4.2
References
Reference URL Reference Tags
https://github.com/kubernetes/ingress-nginx/issues/8503 Issue Tracking Mitigation Third Party Advisory
https://groups.google.com/g/kubernetes-security-announce/c/hv2-SfdqcfQ Issue Tracking Mitigation Third Party Advisory
https://security.netapp.com/advisory/ntap-20220609-0006/
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-25746
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-25746
History
Created Old Value New Value Data Type Notes
2022-05-08 06:18:59 Added to TrackCVE
2022-12-06 14:31:19 2022-12-02T23:05:30 CVE Modified Date updated
2022-12-06 14:31:19 Undergoing Analysis Analyzed Vulnerability Status updated