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      "text": "Moderate"
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    "distribution": {
      "text": "Copyright © Red Hat, Inc. All rights reserved.",
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        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
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    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "An update is now available for Red Hat build of Eclipse Vert.x.\n\nRed 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. For more information, see the CVE pages listed in the References section.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "This release of Red Hat build of Eclipse Vert.x 4.0.3 includes security updates, bug fixes, and enhancements. For more information, see the release notes listed in the References section.\n\nSecurity Fix(es):\n\n* netty: Information disclosure via the local system temporary directory (CVE-2021-21290)\n\n* netty: possible request smuggling in HTTP/2 due missing validation (CVE-2021-21295)\n\nFor more details about the security issues and their impact, the CVSS score, acknowledgements, and other related information, see the CVE pages listed in the References section.",
        "title": "Details"
      },
      {
        "category": "legal_disclaimer",
        "text": "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.",
        "title": "Terms of Use"
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      {
        "category": "self",
        "summary": "https://access.redhat.com/errata/RHSA-2021:0943",
        "url": "https://access.redhat.com/errata/RHSA-2021:0943"
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        "summary": "https://access.redhat.com/security/updates/classification/#moderate",
        "url": "https://access.redhat.com/security/updates/classification/#moderate"
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        "category": "external",
        "summary": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?downloadType=distributions&product=catRhoar.eclipse.vertx&version=4.0.3",
        "url": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?downloadType=distributions&product=catRhoar.eclipse.vertx&version=4.0.3"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/documentation/en-us/red_hat_build_of_eclipse_vert.x/4.0/html/release_notes_for_eclipse_vert.x_4.0/index",
        "url": "https://access.redhat.com/documentation/en-us/red_hat_build_of_eclipse_vert.x/4.0/html/release_notes_for_eclipse_vert.x_4.0/index"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/documentation/en-us/red_hat_build_of_eclipse_vert.x/4.0/html/eclipse_vert.x_4.0_migration_guide/index",
        "url": "https://access.redhat.com/documentation/en-us/red_hat_build_of_eclipse_vert.x/4.0/html/eclipse_vert.x_4.0_migration_guide/index"
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        "category": "external",
        "summary": "1927028",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1927028"
      },
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        "category": "external",
        "summary": "1937364",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1937364"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_0943.json"
      }
    ],
    "title": "Red Hat Security Advisory: Red Hat build of Eclipse Vert.x 4.0.3 security update",
    "tracking": {
      "current_release_date": "2026-06-28T12:27:45+00:00",
      "generator": {
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          "version": "5.2.6"
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      "revision_history": [
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          "date": "2021-03-31T09:38:00+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2021-03-31T09:38:00+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2026-06-28T12:27:45+00:00",
          "number": "3",
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      "version": "3"
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                "name": "Red Hat build of Eclipse Vert.x 4.0.3",
                "product": {
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                  "product_id": "Red Hat build of Eclipse Vert.x 4.0.3",
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  "vulnerabilities": [
    {
      "cve": "CVE-2021-21290",
      "cwe": {
        "id": "CWE-200",
        "name": "Exposure of Sensitive Information to an Unauthorized Actor"
      },
      "discovery_date": "2021-02-09T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1927028"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "In Netty there is a vulnerability on Unix-like systems involving an insecure temp file. When netty's multipart decoders are used, a local information disclosure can occur via the local system temporary directory if temporary storing uploads on the disk is enabled. On unix-like systems, the temporary directory is shared between all user. As such, writing to this directory using APIs that do not explicitly set the file/directory permissions can lead to information disclosure.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "netty: Information disclosure via the local system temporary directory",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Eclipse Vert.x 4.0.3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2021-21290"
        },
        {
          "category": "external",
          "summary": "RHBZ#1927028",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1927028"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-21290",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-21290"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-21290",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21290"
        }
      ],
      "release_date": "2021-02-09T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-03-31T09:38:00+00:00",
          "details": "Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.\n\nThe References section of this erratum contains a download link for the update. You must be logged in to download the update.",
          "product_ids": [
            "Red Hat build of Eclipse Vert.x 4.0.3"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:0943"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 6.2,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Eclipse Vert.x 4.0.3"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "netty: Information disclosure via the local system temporary directory"
    },
    {
      "cve": "CVE-2021-21295",
      "cwe": {
        "id": "CWE-444",
        "name": "Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')"
      },
      "discovery_date": "2021-03-09T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "1937364"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "In Netty (io.netty:netty-codec-http2) before version 4.1.60.Final there is a vulnerability that enables request smuggling. If a Content-Length header is present in the original HTTP/2 request, the field is not validated by `Http2MultiplexHandler` as it is propagated up. This is fine as long as the request is not proxied through as HTTP/1.1. If the request comes in as an HTTP/2 stream, gets converted into the HTTP/1.1 domain objects (`HttpRequest`, `HttpContent`, etc.) via `Http2StreamFrameToHttpObjectCodec `and then sent up to the child channel's pipeline and proxied through a remote peer as HTTP/1.1 this may result in request smuggling.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "netty: possible request smuggling in HTTP/2 due missing validation",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "Red Hat OpenStack Platform's OpenDaylight will not be updated for this flaw because it was deprecated as of OpenStack Platform 14 and is only receiving security fixes for Important and Critical flaws.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Eclipse Vert.x 4.0.3"
        ]
      },
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          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2021-21295"
        },
        {
          "category": "external",
          "summary": "RHBZ#1937364",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1937364"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2021-21295",
          "url": "https://www.cve.org/CVERecord?id=CVE-2021-21295"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2021-21295",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21295"
        },
        {
          "category": "external",
          "summary": "https://github.com/netty/netty/security/advisories/GHSA-wm47-8v5p-wjpj",
          "url": "https://github.com/netty/netty/security/advisories/GHSA-wm47-8v5p-wjpj"
        }
      ],
      "release_date": "2021-03-09T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-03-31T09:38:00+00:00",
          "details": "Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.\n\nThe References section of this erratum contains a download link for the update. You must be logged in to download the update.",
          "product_ids": [
            "Red Hat build of Eclipse Vert.x 4.0.3"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2021:0943"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.9,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Eclipse Vert.x 4.0.3"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "netty: possible request smuggling in HTTP/2 due missing validation"
    }
  ]
}