Improper input validation in Kubernetes Ingress-nginx
CVE-2021-25742
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.018 (75.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L.
Affected products
- Kubernetes Ingress-nginx — versions 1.0.0
- Kubernetes Ingress-nginx — versions unspecified, next of 0.49.0, next of 1.0.0
- Netapp Trident
Weakness classification (CWE)
Public proof-of-concept exploits
References
- jordan@liggitt.net (Mailing List, Third Party Advisory, x_refsource_MISC, Mitigation)
- jordan@liggitt.net (Exploit, Third Party Advisory, x_refsource_MISC, Mitigation, Issue Tracking)
- jordan@liggitt.net (x_refsource_CONFIRM, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-25742?
- CVE-2021-25742 is a high-severity vulnerability in Kubernetes Ingress-nginx, classified under Improper Input Validation. CVSS score: 7.6/10. Published 2021-10-29.
- How severe is CVE-2021-25742?
- High severity. CVSS v3 base score is 7.6 out of 10.
- Is CVE-2021-25742 known to be exploited?
- 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.