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Information Exposure Affecting istio.io/istio/pilot/pkg/xds package, versions >=1.10.0 <1.10.2 >=1.8.0 <1.9.6

0.0
medium

Snyk CVSS

    Attack Complexity Low
    Confidentiality High

    Threat Intelligence

    EPSS 0.1% (42nd percentile)
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NVD
8.8 high
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Red Hat
9.1 critical

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  • Snyk ID SNYK-GOLANG-ISTIOIOISTIOPILOTPKGXDS-1315150
  • published 30 Jun 2021
  • disclosed 30 Jun 2021
  • credit Nishant Virmani, Stephane Mercier, Antonin Nycz, John Howard
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Introduced: 30 Jun 2021

CVE-2021-34824 Open this link in a new tab
CWE-200 Open this link in a new tab

How to fix?

Upgrade istio.io/istio/pilot/pkg/xds to version 1.10.2, 1.9.6 or higher.

Overview

Affected versions of this package are vulnerable to Information Exposure. Credentials specified in the Gateway and DestinationRule credentialName field can be accessed from different namespaces.

Users are only impacted if ALL of following conditions are true for their clusters:

  • It is using a vulnerable version of Istio.
  • It has defined Gateways or DestinationRules with the credentialName field specified.
  • It does not specify the Istiod flag PILOT_ENABLE_XDS_CACHE=false.