ubuntu-cve-2023-0464
Vulnerability from osv_ubuntu
Published
2023-03-22 17:15
Modified
2026-04-22 07:44
Summary
Details

A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints. Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of computational resources, leading to a denial-of-service (DoS) attack on affected systems. Policy processing is disabled by default but can be enabled by passing the -policy' argument to the command line utilities or by calling theX509_VERIFY_PARAM_set1_policies()' function.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
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        "name": "openssl",
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      },
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            },
            {
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            }
          ],
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        }
      ],
      "versions": [
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        "1.0.2g-1ubuntu4.6",
        "1.0.2g-1ubuntu4.8",
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        "1.0.2g-1ubuntu4.14",
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            "binary_name": "libssl1.0.0",
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        "1.1.1-1ubuntu2.1~18.04.9",
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    {
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    {
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          },
          {
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        "1.1.1f-1ubuntu2.9",
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        "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",
        "0~20191122.bd85bf54-2ubuntu3.5",
        "0~20191122.bd85bf54-2ubuntu3.6"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libssl1.1",
            "binary_version": "1.1.1f-1ubuntu2.fips.18"
          },
          {
            "binary_name": "libssl1.1-hmac",
            "binary_version": "1.1.1f-1ubuntu2.fips.18"
          },
          {
            "binary_name": "openssl",
            "binary_version": "1.1.1f-1ubuntu2.fips.18"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:FIPS-updates:20.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@1.1.1f-1ubuntu2.fips.18?arch=source\u0026distro=fips-updates/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.1f-1ubuntu2.fips.18"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.1f-1ubuntu2.fips.7",
        "1.1.1f-1ubuntu2.fips.7.2",
        "1.1.1f-1ubuntu2.fips.12",
        "1.1.1f-1ubuntu2.fips.13",
        "1.1.1f-1ubuntu2.fips.13.1",
        "1.1.1f-1ubuntu2.fips.16",
        "1.1.1f-1ubuntu2.fips.17"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libssl1.1",
            "binary_version": "1.1.1f-1ubuntu2.fips.7.1"
          },
          {
            "binary_name": "libssl1.1-hmac",
            "binary_version": "1.1.1f-1ubuntu2.fips.7.1"
          },
          {
            "binary_name": "openssl",
            "binary_version": "1.1.1f-1ubuntu2.fips.7.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:FIPS:20.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@1.1.1f-1ubuntu2.fips.7.1?arch=source\u0026distro=fips/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.1f-1ubuntu2.fips.2.8",
        "1.1.1f-1ubuntu2.fips.7.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "ovmf",
            "binary_version": "2022.02-3ubuntu0.22.04.4"
          },
          {
            "binary_name": "ovmf-ia32",
            "binary_version": "2022.02-3ubuntu0.22.04.4"
          },
          {
            "binary_name": "qemu-efi",
            "binary_version": "2022.02-3ubuntu0.22.04.4"
          },
          {
            "binary_name": "qemu-efi-aarch64",
            "binary_version": "2022.02-3ubuntu0.22.04.4"
          },
          {
            "binary_name": "qemu-efi-arm",
            "binary_version": "2022.02-3ubuntu0.22.04.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "edk2",
        "purl": "pkg:deb/ubuntu/edk2@2022.02-3ubuntu0.22.04.4?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2022.02-3ubuntu0.22.04.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "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",
        "2022.02-3ubuntu0.22.04.2",
        "2022.02-3ubuntu0.22.04.3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libssl3",
            "binary_version": "3.0.2-0ubuntu1.9"
          },
          {
            "binary_name": "openssl",
            "binary_version": "3.0.2-0ubuntu1.9"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@3.0.2-0ubuntu1.9?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.0.2-0ubuntu1.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.1l-1ubuntu1",
        "3.0.0-1ubuntu1",
        "3.0.1-0ubuntu1",
        "3.0.2-0ubuntu1",
        "3.0.2-0ubuntu1.1",
        "3.0.2-0ubuntu1.2",
        "3.0.2-0ubuntu1.4",
        "3.0.2-0ubuntu1.5",
        "3.0.2-0ubuntu1.6",
        "3.0.2-0ubuntu1.7",
        "3.0.2-0ubuntu1.8"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libnode72",
            "binary_version": "12.22.9~dfsg-1ubuntu3.6+esm2"
          },
          {
            "binary_name": "nodejs",
            "binary_version": "12.22.9~dfsg-1ubuntu3.6+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "nodejs",
        "purl": "pkg:deb/ubuntu/nodejs@12.22.9~dfsg-1ubuntu3.6+esm2?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "12.22.5~dfsg-5ubuntu1",
        "12.22.7~dfsg-2ubuntu1",
        "12.22.7~dfsg-2ubuntu3",
        "12.22.9~dfsg-1ubuntu2",
        "12.22.9~dfsg-1ubuntu3",
        "12.22.9~dfsg-1ubuntu3.1",
        "12.22.9~dfsg-1ubuntu3.2",
        "12.22.9~dfsg-1ubuntu3.3",
        "12.22.9~dfsg-1ubuntu3.4",
        "12.22.9~dfsg-1ubuntu3.5",
        "12.22.9~dfsg-1ubuntu3.6",
        "12.22.9~dfsg-1ubuntu3.6+esm2"
      ]
    }
  ],
  "aliases": [],
  "details": "A security vulnerability has been identified in all supported versions of OpenSSL related to the verification of X.509 certificate chains that include policy constraints.  Attackers may be able to exploit this vulnerability by creating a malicious certificate chain that triggers exponential use of computational resources, leading to a denial-of-service (DoS) attack on affected systems. Policy processing is disabled by default but can be enabled by passing the `-policy\u0027 argument to the command line utilities or by calling the `X509_VERIFY_PARAM_set1_policies()\u0027 function.",
  "id": "UBUNTU-CVE-2023-0464",
  "modified": "2026-04-22T07:44:54Z",
  "published": "2023-03-22T17:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-0464"
    },
    {
      "type": "REPORT",
      "url": "https://www.openssl.org/news/secadv/20230322.txt"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6039-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-0464"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7894-1"
    }
  ],
  "related": [
    "USN-6039-1",
    "USN-7894-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2023-0464"
  ]
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.