CVE-2021-25736
Published: 30 October 2023
Kube-proxy on Windows can unintentionally forward traffic to local processes listening on the same port (“spec.ports[*].port”) as a LoadBalancer Service when the LoadBalancer controller does not set the “status.loadBalancer.ingress[].ip” field. Clusters where the LoadBalancer controller sets the “status.loadBalancer.ingress[].ip” field are unaffected.
Notes
| Author | Note |
|---|---|
| leosilva | kubernates is in fact a kubernetes installer that calls snap, not the package it self. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
kubernetes Launchpad, Ubuntu, Debian |
bionic |
Does not exist
|
| focal |
Not vulnerable
(windows only)
|
|
| groovy |
Not vulnerable
(windows only)
|
|
| hirsute |
Not vulnerable
(windows only)
|
|
| trusty |
Does not exist
|
|
| upstream |
Not vulnerable
(debian: Windows-specific)
|
|
| xenial |
Does not exist
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.3 |
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | Low |
| User interaction | None |
| Scope | Changed |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N |