Authorization Bypass Affecting istio.io/istio/pilot/pkg/networking/core/v1alpha3 package, versions >=1.9.0 <1.9.5<1.8.6


Severity

Recommended
0.0
high
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.08% (37th percentile)

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  • Snyk IDSNYK-GOLANG-ISTIOIOISTIOPILOTPKGNETWORKINGCOREV1ALPHA3-1299109
  • published3 Jun 2021
  • disclosed3 Jun 2021
  • credit@Ruilin, @Test123

Introduced: 3 Jun 2021

CVE-2021-31920  (opens in a new tab)
CWE-285  (opens in a new tab)

How to fix?

Upgrade istio.io/istio/pilot/pkg/networking/core/v1alpha3 to version 1.9.5, 1.8.6 or higher.

Overview

Affected versions of this package are vulnerable to Authorization Bypass. An HTTP request path with multiple slashes or escaped slash characters (e.g. %2F or %5C) could potentially bypass an Istio authorization policy when path-based authorization rules are used.

CVSS Scores

version 3.1