{
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    "distribution": {
      "text": "Copyright 2024 SUSE LLC. All rights reserved.",
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        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "Security update for netty",
        "title": "Title of the patch"
      },
      {
        "category": "description",
        "text": "This update for netty fixes the following issues:\n\n- CVE-2025-55163: Fixed \u0027MadeYouReset\u0027 DoS attack in HTTP/2 \n  protocol (including DNS over HTTPS) (bsc#1247991)\n",
        "title": "Description of the patch"
      },
      {
        "category": "details",
        "text": "SUSE-2025-3021,SUSE-SLE-Product-SUSE-Manager-Server-4.3-LTS-2025-3021",
        "title": "Patchnames"
      },
      {
        "category": "legal_disclaimer",
        "text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
        "title": "Terms of use"
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      "contact_details": "https://www.suse.com/support/security/contact/",
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        "category": "external",
        "summary": "SUSE ratings",
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        "category": "self",
        "summary": "URL of this CSAF notice",
        "url": "https://ftp.suse.com/pub/projects/security/csaf/suse-su-2025_03021-1.json"
      },
      {
        "category": "self",
        "summary": "URL for SUSE-SU-2025:03021-1",
        "url": "https://www.suse.com/support/update/announcement/2025/suse-su-202503021-1/"
      },
      {
        "category": "self",
        "summary": "E-Mail link for SUSE-SU-2025:03021-1",
        "url": "https://lists.suse.com/pipermail/sle-updates/2025-August/041418.html"
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      {
        "category": "self",
        "summary": "SUSE Bug 1247991",
        "url": "https://bugzilla.suse.com/1247991"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2025-55163 page",
        "url": "https://www.suse.com/security/cve/CVE-2025-55163/"
      }
    ],
    "title": "Security update for netty",
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      "current_release_date": "2025-08-29T09:42:17Z",
      "generator": {
        "date": "2025-08-29T09:42:17Z",
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      "id": "SUSE-SU-2025:03021-1",
      "initial_release_date": "2025-08-29T09:42:17Z",
      "revision_history": [
        {
          "date": "2025-08-29T09:42:17Z",
          "number": "1",
          "summary": "Current version"
        }
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      "status": "final",
      "version": "1"
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  "product_tree": {
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      {
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          {
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              {
                "category": "product_version",
                "name": "netty-4.1.44.Final-150400.3.9.1.noarch",
                "product": {
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                }
              }
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          {
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                "name": "SUSE Manager Server LTS 4.3",
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          "product_id": "SUSE Manager Server LTS 4.3:netty-4.1.44.Final-150400.3.9.1.noarch"
        },
        "product_reference": "netty-4.1.44.Final-150400.3.9.1.noarch",
        "relates_to_product_reference": "SUSE Manager Server LTS 4.3"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-55163",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2025-55163"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.124.Final and 4.2.4.Final, Netty is vulnerable to MadeYouReset DDoS. This is a logical vulnerability in the HTTP/2 protocol, that uses malformed HTTP/2 control frames in order to break the max concurrent streams limit - which results in resource exhaustion and distributed denial of service. This issue has been patched in versions 4.1.124.Final and 4.2.4.Final.",
          "title": "CVE description"
        }
      ],
      "product_status": {
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      "references": [
        {
          "category": "external",
          "summary": "CVE-2025-55163",
          "url": "https://www.suse.com/security/cve/CVE-2025-55163"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1243888 for CVE-2025-55163",
          "url": "https://bugzilla.suse.com/1243888"
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        {
          "category": "external",
          "summary": "SUSE Bug 1244252 for CVE-2025-55163",
          "url": "https://bugzilla.suse.com/1244252"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1247991 for CVE-2025-55163",
          "url": "https://bugzilla.suse.com/1247991"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Manager Server LTS 4.3:netty-4.1.44.Final-150400.3.9.1.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "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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          ]
        }
      ],
      "threats": [
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          "category": "impact",
          "date": "2025-08-29T09:42:17Z",
          "details": "important"
        }
      ],
      "title": "CVE-2025-55163"
    }
  ]
}