rhsa-2021_1538
Vulnerability from csaf_redhat
Published
2021-05-11 23:31
Modified
2024-11-05 23:32
Summary
Red Hat Security Advisory: Red Hat OpenShift Service Mesh 2.0.4 security update

Notes

Topic
An update for servicemesh and servicemesh-proxy is now available for OpenShift Service Mesh 2.0. Red Hat Product Security has rated this update as having a security impact of Important. 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): * envoyproxy/envoy: HTTP request with escaped slash characters can bypass Envoy's authorization mechanisms (CVE-2021-29492) * istio/istio: HTTP request with escaped slash characters can bypass authorization mechanisms (CVE-2021-31920) 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.
Terms of Use
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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          "category": "description",
          "text": "An authorization bypass flaw was found in Istio. This flaw allows an attacker to craft an HTTP request that defines a certain pattern of escaped characters in the URI path (such as %2F, %2f, %5C, or %5c), allowing them to bypass the authorization service. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "istio/istio: HTTP request with escaped slash characters can bypass authorization mechanisms",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This CVE addresses the specific fixes required in istio to support the vulnerability found in envoyproxy/envoy, CVE-2021-29492.",
          "title": "Statement"
        },
        {
          "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"
        }
      ],
      "product_status": {
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      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2021-31920"
        },
        {
          "category": "external",
          "summary": "RHBZ#1959481",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1959481"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-31920",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-31920"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-31920",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-31920"
        },
        {
          "category": "external",
          "summary": "https://istio.io/latest/news/security/istio-security-2021-005/",
          "url": "https://istio.io/latest/news/security/istio-security-2021-005/"
        }
      ],
      "release_date": "2021-05-11T19:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-05-11T23:31:38+00:00",
          "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258",
          "product_ids": [
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:1538"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          },
          "products": [
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "istio/istio: HTTP request with escaped slash characters can bypass authorization mechanisms"
    }
  ]
}


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