csaf_redhat - rhsa-2020

rhsa-2020_3425

Vulnerability from csaf_redhat

Published

2020-08-11 20:55

Modified

2024-11-22 15:33

Summary

Red Hat Security Advisory: Red Hat OpenShift Service Mesh 1.1 security update

Notes

Topic

An update for servicemesh is now available for OpenShift Service Mesh 1.1. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Details

Red Hat OpenShift Service Mesh is Red Hat's distribution of the Istio service mesh project, tailored for installation into an on-premise OpenShift Container Platform installation. Security Fix(es): * istio: incorrect translation of DENY policy for TCP service (CVE-2020-16844) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

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  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "the Envoy Security Team"
          ]
        }
      ],
      "cve": "CVE-2020-16844",
      "cwe": {
        "id": "CWE-284",
        "name": "Improper Access Control"
      },
      "discovery_date": "2020-07-29T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1861625"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "An insecure access control vulnerability was found in Istio. If an authorization policy is created for a TCP service that includes a DENY rule with a prefix wildcard, Istio translates this into an Envoy string match, incorrectly removing the wildcard. This flaw allows an attacker to subvert particular DENY rules, potentially gaining access to restricted resources.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "istio: incorrect translation of DENY policy for TCP service",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2020-16844"
        },
        {
          "category": "external",
          "summary": "RHBZ#1861625",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1861625"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2020-16844",
          "url": "https://www.cve.org/CVERecord?id=CVE-2020-16844"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2020-16844",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-16844"
        },
        {
          "category": "external",
          "summary": "https://istio.io/latest/news/security/istio-security-2020-009/",
          "url": "https://istio.io/latest/news/security/istio-security-2020-009/"
        }
      ],
      "release_date": "2020-08-11T19:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2020-08-11T20:55:01+00:00",
          "details": "The OpenShift Service Mesh release notes provide information on the features and\nknown issues:\n\nhttps://docs.openshift.com/container-platform/latest/service_mesh/servicemesh-release-notes.html",
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          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2020:3425"
        },
        {
          "category": "workaround",
          "details": "In regards to an AuthorizationPolicy for a TCP service, if using a DENY rule in the source principal (or namespace field) such as:\n    apiVersion: security.istio.io/v1beta1\n    kind: AuthorizationPolicy\n    ...\n   spec: \n     action: DENY\n     rules:\n     - from:\n       - source:\n           principals:\n           - */ns/servicemesh\n\nConsider using an exact or suffix match instead such as:\n    - /foo/bar/ns/servicemesh",
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      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.8,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "8Base-OSSM-1.1:servicemesh-0:1.1.7-1.el8.src",
            "8Base-OSSM-1.1:servicemesh-0:1.1.7-1.el8.x86_64",
            "8Base-OSSM-1.1:servicemesh-citadel-0:1.1.7-1.el8.x86_64",
            "8Base-OSSM-1.1:servicemesh-galley-0:1.1.7-1.el8.x86_64",
            "8Base-OSSM-1.1:servicemesh-istioctl-0:1.1.7-1.el8.x86_64",
            "8Base-OSSM-1.1:servicemesh-mixc-0:1.1.7-1.el8.x86_64",
            "8Base-OSSM-1.1:servicemesh-mixs-0:1.1.7-1.el8.x86_64",
            "8Base-OSSM-1.1:servicemesh-pilot-agent-0:1.1.7-1.el8.x86_64",
            "8Base-OSSM-1.1:servicemesh-pilot-discovery-0:1.1.7-1.el8.x86_64",
            "8Base-OSSM-1.1:servicemesh-sidecar-injector-0:1.1.7-1.el8.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "istio: incorrect translation of DENY policy for TCP service"
    }
  ]
}

cve-2020-16844

Vulnerability from cvelistv5

Published

2020-10-01 16:32

Modified

2024-08-04 13:45

Severity ?

Summary

In Istio 1.5.0 though 1.5.8 and Istio 1.6.0 through 1.6.7, when users specify an AuthorizationPolicy resource with DENY actions using wildcard suffixes (e.g. *-some-suffix) for source principals or namespace fields, callers will never be denied access, bypassing the intended policy.

References

▼	URL	Tags
	https://github.com/istio/istio/releases	x_refsource_MISC
	https://istio.io/latest/news/security/istio-security-2020-009/	x_refsource_CONFIRM

Impacted products

▼	Vendor	Product
	n/a	n/a

Show details on NVD website

JSON

To clipboard

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            "url": "https://istio.io/latest/news/security/istio-security-2020-009/"
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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted