usn-6319-1
Vulnerability from osv_ubuntu
Published
2023-08-30 00:46
Modified
2026-06-25 10:46
Summary
amd64-microcode vulnerability
Details

Daniël Trujillo, Johannes Wikner, and Kaveh Razavi discovered that some AMD processors utilising speculative execution and branch prediction may allow unauthorised memory reads via a speculative side-channel attack. A local attacker could use this to expose sensitive information, including kernel memory.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-20569",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "amd64-microcode",
            "binary_version": "3.20191021.1+really3.20180524.1~ubuntu0.16.04.2+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "amd64-microcode",
        "purl": "pkg:deb/ubuntu/amd64-microcode@3.20191021.1+really3.20180524.1~ubuntu0.16.04.2+esm2?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.20191021.1+really3.20180524.1~ubuntu0.16.04.2+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.20141028.1",
        "2.20160316.1",
        "3.20180524.1~ubuntu0.16.04.1",
        "3.20180524.1~ubuntu0.16.04.2",
        "3.20191021.1ubuntu0.16.04.1",
        "3.20191021.1+really3.20180524.1~ubuntu0.16.04.2",
        "3.20191021.1+really3.20180524.1~ubuntu0.16.04.2+esm1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-20569",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "amd64-microcode",
            "binary_version": "3.20191021.1+really3.20181128.1~ubuntu0.18.04.1+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "amd64-microcode",
        "purl": "pkg:deb/ubuntu/amd64-microcode@3.20191021.1+really3.20181128.1~ubuntu0.18.04.1+esm2?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.20191021.1+really3.20181128.1~ubuntu0.18.04.1+esm2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.20160316.3",
        "3.20171205.1",
        "3.20180524.1~ubuntu0.18.04.1",
        "3.20180524.1~ubuntu0.18.04.2",
        "3.20191021.1ubuntu0.18.04.2",
        "3.20191021.1+really3.20181128.1~ubuntu0.18.04.1",
        "3.20191021.1+really3.20181128.1~ubuntu0.18.04.1+esm1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-20569",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "amd64-microcode",
            "binary_version": "3.20191218.1ubuntu1.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "amd64-microcode",
        "purl": "pkg:deb/ubuntu/amd64-microcode@3.20191218.1ubuntu1.2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.20191218.1ubuntu1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.20181128.1ubuntu2",
        "3.20191021.1ubuntu1",
        "3.20191218.1ubuntu1",
        "3.20191218.1ubuntu1.1"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2023-20569",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:22.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "amd64-microcode",
            "binary_version": "3.20191218.1ubuntu2.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "amd64-microcode",
        "purl": "pkg:deb/ubuntu/amd64-microcode@3.20191218.1ubuntu2.2?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.20191218.1ubuntu2.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.20191218.1ubuntu2",
        "3.20191218.1ubuntu2.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Dani\u00ebl Trujillo, Johannes Wikner, and Kaveh Razavi discovered that some AMD\nprocessors utilising speculative execution and branch prediction may allow\nunauthorised memory reads via a speculative side-channel attack. A local\nattacker could use this to expose sensitive information, including kernel\nmemory.\n",
  "id": "USN-6319-1",
  "modified": "2026-06-25T10:46:15Z",
  "published": "2023-08-30T00:46:25Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6319-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-20569"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "amd64-microcode vulnerability",
  "upstream": [
    "UBUNTU-CVE-2023-20569"
  ]
}



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