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CVE-2021-25745

Ingress-nginx path can be pointed to service account token file

Published: May 6, 2022Updated: Nov 21, 2024 Sources: CVE List NVD GHSACWE-20
NVD MITRE
7.6CVSSHIGH
EPSS Score
1.1%
Top 39.1%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use the spec.rules[].http.paths[].path field of 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.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:LIntegrity
Low
A:LAvailability
Low
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Weaknesses

CWE-20

Affected Products

Kubernetes ingress-nginxKubernetes
Mixed
Cloud & SaaS / container-orchestration
ingress-nginxkubernetesCloud & SaaS
k8s.io/ingress-nginxGoOSS Libraries
kubernetesoss-projectUSCloud & SaaSaka k8s
gopackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

1 technique
Initial Access
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References

https://groups.google.com/g/kubernetes-security-announce/c/7vQrpDZeBlc
groups.google.com
https://github.com/kubernetes/ingress-nginx/issues/8502
github.com
https://security.netapp.com/advisory/ntap-20220609-0006/
security.netapp.com
and 3 more references View all →

Timeline

Published
May 6, 2022
Last Updated
Nov 21, 2024

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