CVE-2021-25740
low
CVSS v3
—
CVSS v2
—
VIR risk
2.5
Description
A security issue was discovered with Kubernetes that could enable users to send network traffic to locations they would otherwise not have access to via a confused deputy attack.
Predictions
Exploit likelihood
30%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-25740
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-25740.html
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | affected | | |
| sles | affected | | |
| debian | bookworm | fixed | 1.20.5+really1.20.2-1 |
| debian | bullseye | fixed | 1.20.5+really1.20.2-1 |
| debian | forky | fixed | 1.20.5+really1.20.2-1 |
| debian | sid | fixed | 1.20.5+really1.20.2-1 |
| debian | trixie | fixed | 1.20.5+really1.20.2-1 |
Package impact
| Ecosystem | Package | Vulnerable | Fixed |
|---|---|---|---|
| Go | k8s.io/kubernetes | <=1.22.2 | |
References
- https://www.suse.com/security/cve/CVE-2021-25740.html
- https://nvd.nist.gov/vuln/detail/CVE-2021-25740
- https://github.com/kubernetes/kubernetes/issues/103675
- https://github.com/kubernetes/kubernetes
- https://groups.google.com/g/kubernetes-security-announce/c/WYE9ptrhSLE
- https://security.netapp.com/advisory/ntap-20211014-0001
- https://security-tracker.debian.org/tracker/CVE-2021-25740
Verify integrity in audit chain (admin only). AS-IS.