What is CVE-2021-31999?

CVE-2021-31999 is a high-severity vulnerability in Rancher, classified under CWE-807. CVSS score: 8.8/10. Published 2021-07-15.

How severe is CVE-2021-31999?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Rancher

CVE-2021-31999

A Reliance on Untrusted Inputs in a Security Decision vulnerability in Rancher allows users in the cluster to act as others users in the cluster by forging the "Impersonate-User" or "Impersonate-Group" headers. This issue affects: Rancher…

EPSS: 0.011 (60.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Rancher — versions Rancher
Rancher Suse Linux Enterprise Server 15 — versions Rancher

Weakness classification (CWE)

CWE-807

References

meissner@suse.de (x_refsource_CONFIRM, Third Party Advisory, Release Notes, Issue Tracking)

Frequently asked questions

What is CVE-2021-31999?: CVE-2021-31999 is a high-severity vulnerability in Rancher, classified under CWE-807. CVSS score: 8.8/10. Published 2021-07-15.
How severe is CVE-2021-31999?: High severity. CVSS v3 base score is 8.8 out of 10.