Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2021-25737

A security issue was discovered in Kubernetes where a user may be able to redirect pod traffic to private networks on a Node. Kubernetes already prevents creation of Endpoint IPs in the localhost or link-local range, but the same validation was not performed on EndpointSlice IPs.

Published

2021-09-06T12:15:07.673

Last Modified

2024-11-21T05:55:19.310

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 2.7 (LOW)

CVSSv2 Vector

AV:N/AC:M/Au:S/C:P/I:P/A:N

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: SINGLE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

6.8

Impact Score

4.9

Weaknesses

Type: Secondary
CWE-184
Type: Primary
CWE-601

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	kubernetes	kubernetes	< 1.18.19	Yes
Application	kubernetes	kubernetes	< 1.19.10	Yes
Application	kubernetes	kubernetes	< 1.20.7	Yes
Application	kubernetes	kubernetes	1.21.0	Yes

References

https://github.com/kubernetes/kubernetes/issues/102106 Patch, Third Party Advisory ([email protected])
https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY Mailing List, Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20211004-0004/ Third Party Advisory ([email protected])
https://github.com/kubernetes/kubernetes/issues/102106 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://groups.google.com/g/kubernetes-security-announce/c/xAiN3924thY Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20211004-0004/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)