MediumFix available

UBUNTU-CVE-2023-48733

Type: advisorySource: OSV1 source record

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.

Announced 14 Feb 2024Source revision 1

Original source ↗

UBUNTU-CVE-2023-48733

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:UBUNTU-CVE-2023-48733

edk2

Source reference: /affected/0/package/name

Affected versions: 0~20150106.5c2d456b-2
Source reference: /affected/0/versions
0~20160104.c2a892d7-1
Source reference: /affected/0/versions
0~20160408.ffea0a2c-2
Source reference: /affected/0/versions
0~20160408.ffea0a2c-2ubuntu0.1
Source reference: /affected/0/versions
0~20160408.ffea0a2c-2ubuntu0.2
Source reference: /affected/0/versions
0~20160408.ffea0a2c-2ubuntu0.2+esm1
Source reference: /affected/0/versions
0~20160408.ffea0a2c-2ubuntu0.2+esm3
Source reference: /affected/0/versions
0~20160408.ffea0a2c-2ubuntu0.2+esm4
Source reference: /affected/0/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

edk2

Source reference: /affected/1/package/name

Affected versions: 0~20170911.5dfba97c-1
Source reference: /affected/1/versions
0~20171010.234dbcef-1
Source reference: /affected/1/versions
0~20171027.76fd5a66-1
Source reference: /affected/1/versions
0~20171205.a9212288-1
Source reference: /affected/1/versions
0~20180105.0bc94c74-1
Source reference: /affected/1/versions
0~20180205.c0d9813c-1
Source reference: /affected/1/versions
0~20180205.c0d9813c-2
Source reference: /affected/1/versions
0~20180205.c0d9813c-2ubuntu0.1
Source reference: /affected/1/versions
0~20180205.c0d9813c-2ubuntu0.2
Source reference: /affected/1/versions
0~20180205.c0d9813c-2ubuntu0.3
Source reference: /affected/1/versions
0~20180205.c0d9813c-2ubuntu0.3+esm1
Source reference: /affected/1/versions
0~20180205.c0d9813c-2ubuntu0.3+esm2
Source reference: /affected/1/versions
0~20180205.c0d9813c-2ubuntu0.3+esm3
Source reference: /affected/1/versions
Fixed versions: Not stated in this record
Prerequisites: Not stated in this record

edk2

Source reference: /affected/2/package/name

Affected versions: 0~20190606.20d2e5a1-2ubuntu1
Source reference: /affected/2/versions
0~20190828.37eef910-3
Source reference: /affected/2/versions
0~20190828.37eef910-4
Source reference: /affected/2/versions
0~20191122.bd85bf54-1
Source reference: /affected/2/versions
0~20191122.bd85bf54-1ubuntu1
Source reference: /affected/2/versions
0~20191122.bd85bf54-2
Source reference: /affected/2/versions
0~20191122.bd85bf54-2ubuntu1
Source reference: /affected/2/versions
0~20191122.bd85bf54-2ubuntu2
Source reference: /affected/2/versions
0~20191122.bd85bf54-2ubuntu3
Source reference: /affected/2/versions
0~20191122.bd85bf54-2ubuntu3.1
Source reference: /affected/2/versions
0~20191122.bd85bf54-2ubuntu3.2
Source reference: /affected/2/versions
0~20191122.bd85bf54-2ubuntu3.3
Source reference: /affected/2/versions
0~20191122.bd85bf54-2ubuntu3.4
Source reference: /affected/2/versions
Fixed versions: 0~20191122.bd85bf54-2ubuntu3.5
Source reference: /affected/2/ranges
Prerequisites: Not stated in this record

edk2

Source reference: /affected/3/package/name

Affected versions: 2021.08~rc0-2
Source reference: /affected/3/versions
2021.08-3
Source reference: /affected/3/versions
2021.11~rc1-1
Source reference: /affected/3/versions
2021.11-1
Source reference: /affected/3/versions
2021.11-2
Source reference: /affected/3/versions
2022.02~rc1-1
Source reference: /affected/3/versions
2022.02~rc1-1ubuntu1
Source reference: /affected/3/versions
2022.02-1
Source reference: /affected/3/versions
2022.02-2
Source reference: /affected/3/versions
2022.02-3
Source reference: /affected/3/versions
2022.02-3ubuntu0.22.04.1
Source reference: /affected/3/versions
Fixed versions: 2022.02-3ubuntu0.22.04.2
Source reference: /affected/3/ranges
Prerequisites: Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "edk2",
      "purl": "pkg:deb/ubuntu/edk2?arch=source&distro=esm-apps-legacy%2Fxenial",
      "ecosystem": "Ubuntu:Pro:16.04:LTS"
    },
    "versions": [
      "0~20150106.5c2d456b-2",
      "0~20160104.c2a892d7-1",
      "0~20160408.ffea0a2c-2",
      "0~20160408.ffea0a2c-2ubuntu0.1",
      "0~20160408.ffea0a2c-2ubuntu0.2",
      "0~20160408.ffea0a2c-2ubuntu0.2+esm1",
      "0~20160408.ffea0a2c-2ubuntu0.2+esm3",
      "0~20160408.ffea0a2c-2ubuntu0.2+esm4"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-48733.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "ovmf",
          "binary_version": "0~20160408.ffea0a2c-2ubuntu0.2+esm4"
        },
        {
          "binary_name": "qemu-efi",
          "binary_version": "0~20160408.ffea0a2c-2ubuntu0.2+esm4"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "edk2",
      "purl": "pkg:deb/ubuntu/edk2?arch=source&distro=esm-apps%2Fbionic",
      "ecosystem": "Ubuntu:Pro:18.04:LTS"
    },
    "versions": [
      "0~20170911.5dfba97c-1",
      "0~20171010.234dbcef-1",
      "0~20171027.76fd5a66-1",
      "0~20171205.a9212288-1",
      "0~20180105.0bc94c74-1",
      "0~20180205.c0d9813c-1",
      "0~20180205.c0d9813c-2",
      "0~20180205.c0d9813c-2ubuntu0.1",
      "0~20180205.c0d9813c-2ubuntu0.2",
      "0~20180205.c0d9813c-2ubuntu0.3",
      "0~20180205.c0d9813c-2ubuntu0.3+esm1",
      "0~20180205.c0d9813c-2ubuntu0.3+esm2",
      "0~20180205.c0d9813c-2ubuntu0.3+esm3"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-48733.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "ovmf",
          "binary_version": "0~20180205.c0d9813c-2ubuntu0.3+esm3"
        },
        {
          "binary_name": "qemu-efi",
          "binary_version": "0~20180205.c0d9813c-2ubuntu0.3+esm3"
        },
        {
          "binary_name": "qemu-efi-aarch64",
          "binary_version": "0~20180205.c0d9813c-2ubuntu0.3+esm3"
        },
        {
          "binary_name": "qemu-efi-arm",
          "binary_version": "0~20180205.c0d9813c-2ubuntu0.3+esm3"
        }
      ]
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0~20191122.bd85bf54-2ubuntu3.5"
          }
        ]
      }
    ],
    "package": {
      "name": "edk2",
      "purl": "pkg:deb/ubuntu/edk2?arch=source&distro=focal",
      "ecosystem": "Ubuntu:20.04:LTS"
    },
    "versions": [
      "0~20190606.20d2e5a1-2ubuntu1",
      "0~20190828.37eef910-3",
      "0~20190828.37eef910-4",
      "0~20191122.bd85bf54-1",
      "0~20191122.bd85bf54-1ubuntu1",
      "0~20191122.bd85bf54-2",
      "0~20191122.bd85bf54-2ubuntu1",
      "0~20191122.bd85bf54-2ubuntu2",
      "0~20191122.bd85bf54-2ubuntu3",
      "0~20191122.bd85bf54-2ubuntu3.1",
      "0~20191122.bd85bf54-2ubuntu3.2",
      "0~20191122.bd85bf54-2ubuntu3.3",
      "0~20191122.bd85bf54-2ubuntu3.4"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-48733.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "ovmf",
          "binary_version": "0~20191122.bd85bf54-2ubuntu3.5"
        },
        {
          "binary_name": "qemu-efi",
          "binary_version": "0~20191122.bd85bf54-2ubuntu3.5"
        },
        {
          "binary_name": "qemu-efi-aarch64",
          "binary_version": "0~20191122.bd85bf54-2ubuntu3.5"
        },
        {
          "binary_name": "qemu-efi-arm",
          "binary_version": "0~20191122.bd85bf54-2ubuntu3.5"
        }
      ],
      "availability": "No subscription required"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "2022.02-3ubuntu0.22.04.2"
          }
        ]
      }
    ],
    "package": {
      "name": "edk2",
      "purl": "pkg:deb/ubuntu/edk2?arch=source&distro=jammy",
      "ecosystem": "Ubuntu:22.04:LTS"
    },
    "versions": [
      "2021.08~rc0-2",
      "2021.08-3",
      "2021.11~rc1-1",
      "2021.11-1",
      "2021.11-2",
      "2022.02~rc1-1",
      "2022.02~rc1-1ubuntu1",
      "2022.02-1",
      "2022.02-2",
      "2022.02-3",
      "2022.02-3ubuntu0.22.04.1"
    ],
    "database_specific": {
      "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-48733.json"
    },
    "ecosystem_specific": {
      "binaries": [
        {
          "binary_name": "ovmf",
          "binary_version": "2022.02-3ubuntu0.22.04.2"
        },
        {
          "binary_name": "ovmf-ia32",
          "binary_version": "2022.02-3ubuntu0.22.04.2"
        },
        {
          "binary_name": "qemu-efi",
          "binary_version": "2022.02-3ubuntu0.22.04.2"
        },
        {
          "binary_name": "qemu-efi-aarch64",
          "binary_version": "2022.02-3ubuntu0.22.04.2"
        },
        {
          "binary_name": "qemu-efi-arm",
          "binary_version": "2022.02-3ubuntu0.22.04.2"
        }
      ],
      "availability": "No subscription required"
    }
  }
]

Related CVEs: CVE-2023-48733
Source reference: /upstream

Publisher severity

medium

Source reference: /severity/0/score

Event: #85725 · Revision 1
Added to Heist Feed: Tue, 27 Oct 2026 03:57:33 GMT
Publisher date: Wed, 14 Feb 2024 00:00:00 GMT

Read the original announcement