FKIE_CVE-2023-48733

Vulnerability from fkie_nvd - Published: 2024-02-14 22:15 - Updated: 2025-08-26 17:19
Severity ?
6.7 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Summary
An insecure default to allow UEFI Shell in EDK2 was left enabled in Ubuntu's EDK2. This allows an OS-resident attacker to bypass Secure Boot.
References
security@ubuntu.comhttps://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137Issue Tracking
security@ubuntu.comhttps://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139Issue Tracking
security@ubuntu.comhttps://lists.debian.org/debian-lts-announce/2024/06/msg00028.htmlMailing List
security@ubuntu.comhttps://nvd.nist.gov/vuln/detail/CVE-2023-48733Third Party Advisory
security@ubuntu.comhttps://www.openwall.com/lists/oss-security/2024/02/14/4Mailing List
af854a3a-2127-422b-91ae-364da2661108https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137Issue Tracking
af854a3a-2127-422b-91ae-364da2661108https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139Issue Tracking
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2024/06/msg00028.htmlMailing List
af854a3a-2127-422b-91ae-364da2661108https://nvd.nist.gov/vuln/detail/CVE-2023-48733Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.openwall.com/lists/oss-security/2024/02/14/4Mailing List
Impacted products
Vendor Product Version
canonical lxd 5.0
canonical lxd 5.21
canonical lxd 5.21
tianocore edk2 *
debian debian_linux 10.0
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:canonical:lxd:5.0:candidate:*:*:*:*:*:*",
              "matchCriteriaId": "3B09DDCF-2D2C-4670-BEDF-5C3574AE0595",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:canonical:lxd:5.21:candidate:*:*:*:*:*:*",
              "matchCriteriaId": "0707C567-7592-4564-86C3-427B4883E491",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:canonical:lxd:5.21:edge:*:*:*:*:*:*",
              "matchCriteriaId": "9E7C13D8-BD34-44CA-B66A-328FD0A99919",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:tianocore:edk2:*:-:*:*:*:*:*:*",
              "matchCriteriaId": "6CE995B2-F287-4E18-B840-6EC5171BBBA5",
              "versionEndIncluding": "2023.11-8",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An insecure default to allow UEFI Shell in EDK2 was left enabled in Ubuntu\u0027s EDK2. This allows an OS-resident attacker to bypass Secure Boot."
    },
    {
      "lang": "es",
      "value": "Un valor predeterminado inseguro para permitir UEFI Shell en EDK2 se dej\u00f3 habilitado en EDK2 de Ubuntu. Esto permite que un atacante residente en el sistema operativo omita el arranque seguro."
    }
  ],
  "id": "CVE-2023-48733",
  "lastModified": "2025-08-26T17:19:40.457",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 6.7,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 0.8,
        "impactScore": 5.9,
        "source": "security@ubuntu.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2024-02-14T22:15:47.320",
  "references": [
    {
      "source": "security@ubuntu.com",
      "tags": [
        "Issue Tracking"
      ],
      "url": "https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137"
    },
    {
      "source": "security@ubuntu.com",
      "tags": [
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      ],
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    },
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      "tags": [
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    },
    {
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      "tags": [
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      ],
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-48733"
    },
    {
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      "tags": [
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    },
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    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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    },
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-48733"
    },
    {
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      "tags": [
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      "url": "https://www.openwall.com/lists/oss-security/2024/02/14/4"
    }
  ],
  "sourceIdentifier": "security@ubuntu.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1188"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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