RHSA-2026:3392

Vulnerability from csaf_redhat - Published: 2026-03-04 15:36 - Updated: 2026-03-12 08:53
Summary
Red Hat Security Advisory: OpenShift Container Platform 4.19.25 bug fix and security update

Notes

Topic
Red Hat OpenShift Container Platform release 4.19.25 is now available with updates to packages and images that fix several bugs and add enhancements. This release includes a security update for Red Hat OpenShift Container Platform 4.19. 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 Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.19.25. See the following advisory for the RPM packages for this release: https://access.redhat.com/errata/RHSA-2026:3391 Space precludes documenting all of the container images in this advisory. See the following Release Notes documentation, which will be updated shortly for this release, for details about these changes: https://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html/release_notes/ Security Fix(es): * Scrapy: python-scrapy: brotli: Python brotli decompression bomb DoS (CVE-2025-6176) 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. All OpenShift Container Platform 4.19 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html-single/updating_clusters/index#updating-cluster-cli.
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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        "text": "Red Hat OpenShift Container Platform release 4.19.25 is now available with\nupdates to packages and images that fix several bugs and add enhancements.\n\n This release includes a security update for Red Hat OpenShift Container\nPlatform 4.19.\n\nRed Hat Product Security has rated this update as having a security impact\nof Important. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available for each vulnerability\nfrom the CVE link(s) in the References section.",
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        "text": "Red Hat OpenShift Container Platform is Red Hat\u0027s cloud computing\nKubernetes application platform solution designed for on-premise or private\ncloud deployments.\n\nThis advisory contains the container images for Red Hat OpenShift Container\nPlatform 4.19.25. See the following advisory for the RPM packages for this\nrelease:\n\nhttps://access.redhat.com/errata/RHSA-2026:3391\n\nSpace precludes documenting all of the container images in this advisory.\nSee the following Release Notes documentation, which will be updated\nshortly for this release, for details about these changes:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html/release_notes/\n\nSecurity Fix(es):\n\n* Scrapy: python-scrapy: brotli: Python brotli decompression bomb DoS\n(CVE-2025-6176)\n\nFor more details about the security issue(s), including the impact, a CVSS\nscore, acknowledgments, and other related information, refer to the CVE\npage(s) listed in the References section.\n\nAll OpenShift Container Platform 4.19 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html-single/updating_clusters/index#updating-cluster-cli.",
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        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_3392.json"
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    "title": "Red Hat Security Advisory: OpenShift Container Platform 4.19.25 bug fix and security update",
    "tracking": {
      "current_release_date": "2026-03-12T08:53:35+00:00",
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  "vulnerabilities": [
    {
      "cve": "CVE-2025-6176",
      "cwe": {
        "id": "CWE-400",
        "name": "Uncontrolled Resource Consumption"
      },
      "discovery_date": "2025-10-31T01:00:56.408048+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2408762"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "Scrapy are vulnerable to a denial of service (DoS) attack due to a flaw in its brotli decompression implementation. The protection mechanism against decompression bombs fails to mitigate the brotli variant, allowing remote servers to crash clients with less than 80GB of available memory. This occurs because brotli can achieve extremely high compression ratios for zero-filled data, leading to excessive memory consumption during decompression.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "Scrapy: python-scrapy: brotli: Python brotli decompression bomb DoS",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This vulnerability is rated Important for Red Hat products. The flaw in Scrapy\u0027s brotli decompression implementation allows remote attackers to trigger a denial of service by sending specially crafted brotli-compressed data. This can lead to excessive memory consumption and system instability.",
          "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": {
        "fixed": [
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          "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202602252137-0",
          "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202602252137-0",
          "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202602252137-0"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-6176"
        },
        {
          "category": "external",
          "summary": "RHBZ#2408762",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2408762"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-6176",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-6176"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-6176",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-6176"
        },
        {
          "category": "external",
          "summary": "https://huntr.com/bounties/2c26a886-5984-47ee-a421-0d5fe1344eb0",
          "url": "https://huntr.com/bounties/2c26a886-5984-47ee-a421-0d5fe1344eb0"
        }
      ],
      "release_date": "2025-10-31T00:00:21.219000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-03-04T15:36:49+00:00",
          "details": "For OpenShift Container Platform 4.19 see the following documentation,\nwhich will be updated shortly for this release, for important instructions\non how to upgrade your cluster and fully apply this asynchronous errata\nupdate:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata\nfor x86_64, s390x, ppc64le, and aarch64 architectures. The image digests\nmay be found at\nhttps://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:02dc35500ba334f341cccbd671471d0941417d135c958a357fb17de61c3ec743\n\n      (For s390x architecture)\n      The image digest is sha256:4ae8f04dfa49dd7e080ad2a957d02248e12ad8a451bc8751e6578fedf883bf3b\n\n      (For ppc64le architecture)\n      The image digest is sha256:8b97a397a2d61a7b45ab2e08f5a125e35a310ba6a61693085e927da3b8fb5d12\n\n      (For aarch64 architecture)\n      The image digest is sha256:8e823cdd23c13511d26c45aef2eab267c85878b7ea1f85e8d0dcbbee77262dac\n\nAll OpenShift Container Platform 4.19 users are advised to upgrade to these\nupdated packages and images when they are available in the appropriate\nrelease channel. To check for available updates, use the OpenShift CLI (oc)\nor web console. Instructions for upgrading a cluster are available at\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html-single/updating_clusters/index#updating-cluster-cli.",
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            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202602252137-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202602252137-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:3392"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.",
          "product_ids": [
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            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202602252137-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202602252137-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202602252137-0"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
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            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202602252137-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202602252137-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202602252137-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "Scrapy: python-scrapy: brotli: Python brotli decompression bomb DoS"
    }
  ]
}


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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.