CVE-2021-25742

Ingress-nginx custom snippets allows retrieval of ingress-nginx serviceaccount token and secrets across all namespaces

A security issue was discovered in ingress-nginx where a user that can create or update ingress objects can use the custom snippets feature to obtain all secrets in the cluster.

Affected

Kubernetes · Kubernetes ingress-nginx

CVSS v3.1 NVD

7.1 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

CVSS v3.1 LIGGITT

7.6 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

CVSS v2.0 NVD

5.5 MEDIUMAV:N/AC:L/Au:S/C:P/I:P/A:N

EPSS

2.07% chance of exploitation in the next 30 days, 81st percentile

Published

2021-10-29

Updated

2024-09-16

Proof-of-concept exploits (1)

• cloud-Xolt/CVE0★ · 2023-11-30

Security advisories

• kubernetes/ingress-nginx/issues/7837
• https://groups.google.com/g/kubernetes-security-announce/c/mT4JJxi9tQY
• https://security.netapp.com/advisory/ntap-20211203-0001

References

• CVE Record
• NVD entry

Related

• CVE-2021-25745
• CVE-2021-25746
• CVE-2021-25748
• CVE-2023-5044