title: Istio may allow identity impersonation if user has localhost access
description: Istio is an open platform to connect, manage, and secure microservices. In versions on the 1.15.x branch prior to 1.15.3, a user can impersonate any workload identity within the service mesh if they have localhost access to the Istiod control plane. Version 1.15.3 contains a patch for this issue. There are no known workarounds.
problem types: CWE-863: Incorrect Authorization
affected:
{
vendor: istio
product: istio
versions:
version: >= 1.15.0-beta.0, < 1.15.3, status: affected
}
metrics:
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
attackVector: ADJACENT_NETWORK
attackComplexity: LOW
privilegesRequired: LOW
userInteraction: NONE
scope: CHANGED
confidentialityImpact: HIGH
integrityImpact: LOW
availabilityImpact: NONE
baseScore: 7.6
baseSeverity: HIGH
]