{
  "document": {
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      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en",
    "notes": [
      {
        "category": "summary",
        "text": "An update for edk2 is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support.\n\nRed 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.",
        "title": "Topic"
      },
      {
        "category": "general",
        "text": "EDK (Embedded Development Kit) is a project to enable UEFI support for Virtual Machines. This package contains a sample 64-bit UEFI firmware for QEMU and KVM. \n\nSecurity Fix(es):\n\n* edk2: Buffer overflow when handling Server ID option from a DHCPv6 proxy Advertise message (CVE-2023-45235)\n\nFor 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.",
        "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"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "https://access.redhat.com/security/team/contact/",
      "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.",
      "name": "Red Hat Product Security",
      "namespace": "https://www.redhat.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "https://access.redhat.com/errata/RHSA-2024:6849",
        "url": "https://access.redhat.com/errata/RHSA-2024:6849"
      },
      {
        "category": "external",
        "summary": "https://access.redhat.com/security/updates/classification/#important",
        "url": "https://access.redhat.com/security/updates/classification/#important"
      },
      {
        "category": "external",
        "summary": "2258700",
        "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2258700"
      },
      {
        "category": "self",
        "summary": "Canonical URL",
        "url": "https://security.access.redhat.com/data/csaf/v2/advisories/2024/rhsa-2024_6849.json"
      }
    ],
    "title": "Red Hat Security Advisory: edk2 security update",
    "tracking": {
      "current_release_date": "2024-11-06T07:00:26+00:00",
      "generator": {
        "date": "2024-11-06T07:00:26+00:00",
        "engine": {
          "name": "Red Hat SDEngine",
          "version": "4.1.1"
        }
      },
      "id": "RHSA-2024:6849",
      "initial_release_date": "2024-09-19T11:31:58+00:00",
      "revision_history": [
        {
          "date": "2024-09-19T11:31:58+00:00",
          "number": "1",
          "summary": "Initial version"
        },
        {
          "date": "2024-09-19T11:31:58+00:00",
          "number": "2",
          "summary": "Last updated version"
        },
        {
          "date": "2024-11-06T07:00:26+00:00",
          "number": "3",
          "summary": "Last generated version"
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "Red Hat Enterprise Linux AppStream AUS (v. 8.2)",
                "product": {
                  "name": "Red Hat Enterprise Linux AppStream AUS (v. 8.2)",
                  "product_id": "AppStream-8.2.0.Z.AUS",
                  "product_identification_helper": {
                    "cpe": "cpe:/a:redhat:rhel_aus:8.2::appstream"
                  }
                }
              }
            ],
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            "name": "Red Hat Enterprise Linux"
          },
          {
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                "name": "edk2-0:20190829git37eef91017ad-9.el8_2.5.src",
                "product": {
                  "name": "edk2-0:20190829git37eef91017ad-9.el8_2.5.src",
                  "product_id": "edk2-0:20190829git37eef91017ad-9.el8_2.5.src",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/edk2@20190829git37eef91017ad-9.el8_2.5?arch=src"
                  }
                }
              }
            ],
            "category": "architecture",
            "name": "src"
          },
          {
            "branches": [
              {
                "category": "product_version",
                "name": "edk2-ovmf-0:20190829git37eef91017ad-9.el8_2.5.noarch",
                "product": {
                  "name": "edk2-ovmf-0:20190829git37eef91017ad-9.el8_2.5.noarch",
                  "product_id": "edk2-ovmf-0:20190829git37eef91017ad-9.el8_2.5.noarch",
                  "product_identification_helper": {
                    "purl": "pkg:rpm/redhat/edk2-ovmf@20190829git37eef91017ad-9.el8_2.5?arch=noarch"
                  }
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            "category": "architecture",
            "name": "noarch"
          }
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        "category": "vendor",
        "name": "Red Hat"
      }
    ],
    "relationships": [
      {
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        "full_product_name": {
          "name": "edk2-0:20190829git37eef91017ad-9.el8_2.5.src as a component of Red Hat Enterprise Linux AppStream AUS (v. 8.2)",
          "product_id": "AppStream-8.2.0.Z.AUS:edk2-0:20190829git37eef91017ad-9.el8_2.5.src"
        },
        "product_reference": "edk2-0:20190829git37eef91017ad-9.el8_2.5.src",
        "relates_to_product_reference": "AppStream-8.2.0.Z.AUS"
      },
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "edk2-ovmf-0:20190829git37eef91017ad-9.el8_2.5.noarch as a component of Red Hat Enterprise Linux AppStream AUS (v. 8.2)",
          "product_id": "AppStream-8.2.0.Z.AUS:edk2-ovmf-0:20190829git37eef91017ad-9.el8_2.5.noarch"
        },
        "product_reference": "edk2-ovmf-0:20190829git37eef91017ad-9.el8_2.5.noarch",
        "relates_to_product_reference": "AppStream-8.2.0.Z.AUS"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-45235",
      "cwe": {
        "id": "CWE-119",
        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
      },
      "discovery_date": "2024-01-16T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2258700"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A security flaw involving buffer overflow was identified in EDK2, the open-source reference implementation of the UEFI specification. This vulnerability enables an unauthorized attacker within the vicinity network to transmit a specifically crafted DHCPv6 proxy Advertise message, resulting in the disclosure of information and potential compromise of system availability.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "edk2: Buffer overflow when handling Server ID option from a DHCPv6 proxy Advertise message",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "The discovery of a buffer overflow vulnerability in EDK2, the open-source implementation of the UEFI specification, raises significant concerns for system security. This flaw, when exploited by an unauthorized attacker on the same network, allows for the transmission of a malicious DHCPv6 proxy Advertise message. This can lead to the compromise of sensitive information and poses a serious threat to the availability of the system.",
          "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": [
          "AppStream-8.2.0.Z.AUS:edk2-0:20190829git37eef91017ad-9.el8_2.5.src",
          "AppStream-8.2.0.Z.AUS:edk2-ovmf-0:20190829git37eef91017ad-9.el8_2.5.noarch"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2023-45235"
        },
        {
          "category": "external",
          "summary": "RHBZ#2258700",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2258700"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2023-45235",
          "url": "https://www.cve.org/CVERecord?id=CVE-2023-45235"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-45235",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-45235"
        },
        {
          "category": "external",
          "summary": "https://blog.quarkslab.com/pixiefail-nine-vulnerabilities-in-tianocores-edk-ii-ipv6-network-stack.html",
          "url": "https://blog.quarkslab.com/pixiefail-nine-vulnerabilities-in-tianocores-edk-ii-ipv6-network-stack.html"
        },
        {
          "category": "external",
          "summary": "https://github.com/advisories/GHSA-h9v6-q439-p7j2",
          "url": "https://github.com/advisories/GHSA-h9v6-q439-p7j2"
        }
      ],
      "release_date": "2024-01-16T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2024-09-19T11:31:58+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": [
            "AppStream-8.2.0.Z.AUS:edk2-0:20190829git37eef91017ad-9.el8_2.5.src",
            "AppStream-8.2.0.Z.AUS:edk2-ovmf-0:20190829git37eef91017ad-9.el8_2.5.noarch"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2024:6849"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options don\u0027t meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
          "product_ids": [
            "AppStream-8.2.0.Z.AUS:edk2-0:20190829git37eef91017ad-9.el8_2.5.src",
            "AppStream-8.2.0.Z.AUS:edk2-ovmf-0:20190829git37eef91017ad-9.el8_2.5.noarch"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "ADJACENT_NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "AppStream-8.2.0.Z.AUS:edk2-0:20190829git37eef91017ad-9.el8_2.5.src",
            "AppStream-8.2.0.Z.AUS:edk2-ovmf-0:20190829git37eef91017ad-9.el8_2.5.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "edk2: Buffer overflow when handling Server ID option from a DHCPv6 proxy Advertise message"
    }
  ]
}