CVE-2021-31999CWE-807

Rancher: Privilege escalation vulnerability via malicious Connection header

High · published July 15, 2021

CVSS v3.1
8.8
EPSS
1%
Percentile
64.0
In the wild
Unconfirmed
What it is

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 versions prior to 2.5.9. Rancher versions prior to 2.4.16.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01052 · 64.0th percentile
Weakness
CWE-807 · Reliance on Untrusted Inputs in a Security Decision
Published
2021-07-15T08:55Z
EPSS history
Timeline
  • 15 JUL 08:55Z
    Rancher: Privilege escalation vulnerability via malicious Connection header
    cvelistv5