rhsa-2024_1077
Vulnerability from csaf_redhat
Published
2024-03-05 00:36
Modified
2024-11-06 05:09
Summary
Red Hat Security Advisory: edk2 security update

Notes

Topic
An update for edk2 is now available for Red Hat Enterprise Linux 9.0 Extended Update Support. 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
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. Security Fix(es): * edk2: Buffer overflow in the DHCPv6 client via a long Server ID option (CVE-2023-45230) * edk2: Buffer overflow when processing DNS Servers option in a DHCPv6 Advertise message (CVE-2023-45234) 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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        "title": "Topic"
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        "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 in the DHCPv6 client via a long Server ID option (CVE-2023-45230)\n\n* edk2: Buffer overflow when processing DNS Servers option in a DHCPv6 Advertise message (CVE-2023-45234)\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"
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      "cwe": {
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        "name": "Improper Restriction of Operations within the Bounds of a Memory Buffer"
      },
      "discovery_date": "2024-01-16T00:00:00+00:00",
      "ids": [
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          "text": "2258685"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A security flaw was identified in EDK2, the open-source reference implementation of the UEFI specification, involving a buffer overflow vulnerability. This particular weakness enables an unauthorized attacker within the vicinity of the network to transmit a specifically crafted DHCPv6 message. This, in turn, could result in an information disclosure and compromise the availability of the system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "edk2: Buffer overflow in the DHCPv6 client via a long Server ID option",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "The buffer overflow vulnerability identified in EDK2 is of significant importance due to its potential impact on system security. As the open-source reference implementation of the UEFI specification, EDK2 plays a crucial role in system boot processes. The discovered flaw allows an unauthorized attacker within the local network to exploit the vulnerability by sending a specially crafted DHCPv6 message, leading to an information leak and compromising system availability. Given the fundamental role of UEFI in system functionality, addressing and patching this issue promptly is crucial to prevent potential security breaches and ensure the integrity of the overall 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": {
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          "summary": "Canonical URL",
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          "summary": "RHBZ#2258685",
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2023-45230",
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        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-45230",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-45230"
        },
        {
          "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"
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        {
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      ],
      "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": [
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            "AppStream-9.0.0.Z.EUS:edk2-aarch64-0:20220126gitbb1bba3d77-3.el9_0.4.noarch",
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "edk2: Buffer overflow in the DHCPv6 client via a long Server ID option"
    },
    {
      "cve": "CVE-2023-45234",
      "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",
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        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A security weakness was identified in EDK2, the open-source reference implementation of the UEFI specification, revealing a buffer overflow vulnerability. This vulnerability enables an unauthorized attacker within proximity on the network to transmit a specifically crafted DHCPv6 Advertise message. As a consequence, it results in the unauthorized disclosure of information and jeopardizes the availability of the system.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "edk2: Buffer overflow when processing DNS Servers option in a DHCPv6 Advertise message",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "The discovery of a buffer overflow vulnerability in EDK2, the open-source UEFI implementation, is a significant issue due to its potential impact on system security. This flaw allows an attacker to exploit the system\u0027s vulnerability through a specially crafted DHCPv6 Advertise message, leading to unauthorized access, information leakage, and potential compromise of system availability.",
          "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": [
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          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2023-45234"
        },
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          "summary": "RHBZ#2258697",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2258697"
        },
        {
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          "summary": "https://www.cve.org/CVERecord?id=CVE-2023-45234",
          "url": "https://www.cve.org/CVERecord?id=CVE-2023-45234"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-45234",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-45234"
        },
        {
          "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-mrjv-p9q7-rxgr",
          "url": "https://github.com/advisories/GHSA-mrjv-p9q7-rxgr"
        }
      ],
      "release_date": "2024-01-16T00:00:00+00:00",
      "remediations": [
        {
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          "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",
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            "AppStream-9.0.0.Z.EUS:edk2-aarch64-0:20220126gitbb1bba3d77-3.el9_0.4.noarch",
            "AppStream-9.0.0.Z.EUS:edk2-ovmf-0:20220126gitbb1bba3d77-3.el9_0.4.noarch"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2024:1077"
        },
        {
          "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-9.0.0.Z.EUS:edk2-0:20220126gitbb1bba3d77-3.el9_0.4.src",
            "AppStream-9.0.0.Z.EUS:edk2-aarch64-0:20220126gitbb1bba3d77-3.el9_0.4.noarch",
            "AppStream-9.0.0.Z.EUS:edk2-ovmf-0:20220126gitbb1bba3d77-3.el9_0.4.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": [
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            "AppStream-9.0.0.Z.EUS:edk2-aarch64-0:20220126gitbb1bba3d77-3.el9_0.4.noarch",
            "AppStream-9.0.0.Z.EUS:edk2-ovmf-0:20220126gitbb1bba3d77-3.el9_0.4.noarch"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "edk2: Buffer overflow when processing DNS Servers option in a DHCPv6 Advertise message"
    }
  ]
}


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  • Confirmed: The vulnerability is confirmed from an analyst perspective.
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