Auth bypass in Istio
CVE-2022-39388
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.
Vulnerability class: Broken Access Control
EPSS: 0.005 (37.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.6 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.
Affected products
- Istio — versions >= 1.15.0-beta.0, < 1.15.3
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory)
- security-advisories@github.com (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-39388?
- CVE-2022-39388 is a high-severity vulnerability in Istio, classified under Incorrect Authorization. CVSS score: 7.6/10. Published 2022-11-10.
- How severe is CVE-2022-39388?
- High severity. CVSS v3 base score is 7.6 out of 10.
- Is CVE-2022-39388 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.