title: Rancher: Privilege escalation vulnerability via malicious Connection header
description: 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.
problem types: CWE-807: Reliance on Untrusted Inputs in a Security Decision
affected:
{
product: Rancher
vendor: Rancher
versions:
lessThan: 2.5.9, status: affected, version: Rancher, versionType: custom
}
{
product: SUSE Linux Enterprise Server 15
vendor: Rancher
versions:
lessThan: 2.4.16, status: affected, version: Rancher, versionType: custom
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 8.8
baseSeverity: HIGH
confidentialityImpact: HIGH
integrityImpact: HIGH
privilegesRequired: LOW
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
version: 3.1
]