usn-8678-2
Vulnerability from osv_ubuntu
Published
2026-08-25 18:15
Modified
2026-08-25 18:15
Summary
openssl, openssl1.0 vulnerabilities
Details

USN-8678-1 fixed vulnerabilities in OpenSSL. This update provides the corresponding fix for OpenSSL and OpenSSL 1.0 on Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, and Ubuntu 18.04 LTS.

In addition, this update also fixes the following issues that were not previously addressed in those releases:

It was discovered that OpenSSL incorrectly handled TLS handshake message buffering. A remote attacker could possibly use this issue to cause OpenSSL to consume excessive memory, leading to a denial of service. (LP: #2161371)

It was discovered that OpenSSL incorrectly handled session cache management when processing TLSv1.3 sessions. A remote attacker could possibly use this issue to cause OpenSSL to consume excessive memory, leading to a denial of service. This issue only affected OpenSSL 1.1.1 on Ubuntu 18.04 LTS. (CVE-2024-2511)

It was discovered that OpenSSL incorrectly handled the SSL_select_next_proto function when called with an empty client protocol list. A remote attacker could possibly use this issue to cause OpenSSL to disclose private memory contents to the peer, leading to a loss of confidentiality. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2024-5535)

Original advisory details:

It was discovered that OpenSSL incorrectly handled buffering of DTLS records for a future epoch. A remote attacker could possibly use this issue to cause OpenSSL to use excessive resources, leading to a denial of service. (CVE-2026-54874)

It was discovered that OpenSSL incorrectly handled CMS key unwrapping. A remote attacker could possibly use this issue to cause a heap buffer overflow, leading to a denial of service or arbitrary code execution. (CVE-2026-63072)

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2024-2511",
              "severity": [
                {
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                  "type": "CVSS_V3"
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            },
            {
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                  "type": "CVSS_V3"
                },
                {
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                  "type": "Ubuntu"
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            {
              "id": "CVE-2026-54874",
              "severity": [
                {
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                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-63072",
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                }
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            }
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          "ecosystem": "Ubuntu:Pro:14.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro",
        "binaries": [
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            "binary_name": "openssl",
            "binary_version": "1.0.1f-1ubuntu2.27+esm16"
          }
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        "1.0.1f-1ubuntu2.27+esm13",
        "1.0.1f-1ubuntu2.27+esm14"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2024-2511",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
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            {
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                  "type": "CVSS_V3"
                },
                {
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                  "type": "Ubuntu"
                }
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            },
            {
              "id": "CVE-2026-54874",
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                {
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                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-63072",
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        }
      },
      "ecosystem_specific": {
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            "binary_name": "libssl1.0.0",
            "binary_version": "1.0.2g-1ubuntu4.20+esm18"
          },
          {
            "binary_name": "openssl",
            "binary_version": "1.0.2g-1ubuntu4.20+esm18"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@1.0.2g-1ubuntu4.20+esm18?arch=source\u0026distro=esm-infra-legacy/xenial"
      },
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            },
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          ],
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      ],
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        "1.0.2d-0ubuntu2",
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        "1.0.2f-2ubuntu1",
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        "1.0.2g-1ubuntu4.12",
        "1.0.2g-1ubuntu4.13",
        "1.0.2g-1ubuntu4.14",
        "1.0.2g-1ubuntu4.15",
        "1.0.2g-1ubuntu4.16",
        "1.0.2g-1ubuntu4.17",
        "1.0.2g-1ubuntu4.18",
        "1.0.2g-1ubuntu4.19",
        "1.0.2g-1ubuntu4.20",
        "1.0.2g-1ubuntu4.20+esm1",
        "1.0.2g-1ubuntu4.20+esm2",
        "1.0.2g-1ubuntu4.20+esm3",
        "1.0.2g-1ubuntu4.20+esm4",
        "1.0.2g-1ubuntu4.20+esm5",
        "1.0.2g-1ubuntu4.20+esm6",
        "1.0.2g-1ubuntu4.20+esm7",
        "1.0.2g-1ubuntu4.20+esm9",
        "1.0.2g-1ubuntu4.20+esm10",
        "1.0.2g-1ubuntu4.20+esm11",
        "1.0.2g-1ubuntu4.20+esm12",
        "1.0.2g-1ubuntu4.20+esm13",
        "1.0.2g-1ubuntu4.20+esm14",
        "1.0.2g-1ubuntu4.20+esm15",
        "1.0.2g-1ubuntu4.20+esm16"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2024-2511",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-5535",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-54874",
              "severity": [
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-63072",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libssl1.1",
            "binary_version": "1.1.1-1ubuntu2.1~18.04.23+esm10"
          },
          {
            "binary_name": "openssl",
            "binary_version": "1.1.1-1ubuntu2.1~18.04.23+esm10"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@1.1.1-1ubuntu2.1~18.04.23+esm10?arch=source\u0026distro=esm-infra/bionic"
      },
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            }
          ],
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        }
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      "versions": [
        "1.0.2g-1ubuntu13",
        "1.0.2g-1ubuntu14",
        "1.0.2n-1ubuntu1",
        "1.1.0g-2ubuntu1",
        "1.1.0g-2ubuntu2",
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        "1.1.1-1ubuntu2.1~18.04.14",
        "1.1.1-1ubuntu2.1~18.04.15",
        "1.1.1-1ubuntu2.1~18.04.17",
        "1.1.1-1ubuntu2.1~18.04.19",
        "1.1.1-1ubuntu2.1~18.04.20",
        "1.1.1-1ubuntu2.1~18.04.21",
        "1.1.1-1ubuntu2.1~18.04.22",
        "1.1.1-1ubuntu2.1~18.04.23",
        "1.1.1-1ubuntu2.1~18.04.23+esm1",
        "1.1.1-1ubuntu2.1~18.04.23+esm3",
        "1.1.1-1ubuntu2.1~18.04.23+esm4",
        "1.1.1-1ubuntu2.1~18.04.23+esm5",
        "1.1.1-1ubuntu2.1~18.04.23+esm6",
        "1.1.1-1ubuntu2.1~18.04.23+esm7",
        "1.1.1-1ubuntu2.1~18.04.23+esm8",
        "1.1.1-1ubuntu2.1~18.04.23+esm9"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2024-2511",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2024-5535",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-54874",
              "severity": [
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-63072",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:18.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libssl1.0.0",
            "binary_version": "1.0.2n-1ubuntu5.13+esm6"
          },
          {
            "binary_name": "openssl1.0",
            "binary_version": "1.0.2n-1ubuntu5.13+esm6"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "openssl1.0",
        "purl": "pkg:deb/ubuntu/openssl1.0@1.0.2n-1ubuntu5.13+esm6?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
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          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.2n-1ubuntu5.13+esm6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.0.2n-1ubuntu2",
        "1.0.2n-1ubuntu3",
        "1.0.2n-1ubuntu4",
        "1.0.2n-1ubuntu5",
        "1.0.2n-1ubuntu5.1",
        "1.0.2n-1ubuntu5.2",
        "1.0.2n-1ubuntu5.3",
        "1.0.2n-1ubuntu5.4",
        "1.0.2n-1ubuntu5.5",
        "1.0.2n-1ubuntu5.6",
        "1.0.2n-1ubuntu5.7",
        "1.0.2n-1ubuntu5.8",
        "1.0.2n-1ubuntu5.9",
        "1.0.2n-1ubuntu5.10",
        "1.0.2n-1ubuntu5.11",
        "1.0.2n-1ubuntu5.12",
        "1.0.2n-1ubuntu5.13",
        "1.0.2n-1ubuntu5.13+esm1",
        "1.0.2n-1ubuntu5.13+esm2",
        "1.0.2n-1ubuntu5.13+esm3",
        "1.0.2n-1ubuntu5.13+esm4",
        "1.0.2n-1ubuntu5.13+esm5"
      ]
    },
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2026-54874",
              "severity": [
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            },
            {
              "id": "CVE-2026-63072",
              "severity": [
                {
                  "score": "medium",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "libssl1.1",
            "binary_version": "1.1.1f-1ubuntu2.24+esm5"
          },
          {
            "binary_name": "openssl",
            "binary_version": "1.1.1f-1ubuntu2.24+esm5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "openssl",
        "purl": "pkg:deb/ubuntu/openssl@1.1.1f-1ubuntu2.24+esm5?arch=source\u0026distro=esm-infra/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.1f-1ubuntu2.24+esm5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.1.1c-1ubuntu4",
        "1.1.1d-2ubuntu3",
        "1.1.1d-2ubuntu6",
        "1.1.1f-1ubuntu1",
        "1.1.1f-1ubuntu2",
        "1.1.1f-1ubuntu2.1",
        "1.1.1f-1ubuntu2.2",
        "1.1.1f-1ubuntu2.3",
        "1.1.1f-1ubuntu2.4",
        "1.1.1f-1ubuntu2.5",
        "1.1.1f-1ubuntu2.8",
        "1.1.1f-1ubuntu2.9",
        "1.1.1f-1ubuntu2.10",
        "1.1.1f-1ubuntu2.11",
        "1.1.1f-1ubuntu2.12",
        "1.1.1f-1ubuntu2.13",
        "1.1.1f-1ubuntu2.15",
        "1.1.1f-1ubuntu2.16",
        "1.1.1f-1ubuntu2.17",
        "1.1.1f-1ubuntu2.18",
        "1.1.1f-1ubuntu2.19",
        "1.1.1f-1ubuntu2.20",
        "1.1.1f-1ubuntu2.21",
        "1.1.1f-1ubuntu2.22",
        "1.1.1f-1ubuntu2.23",
        "1.1.1f-1ubuntu2.24",
        "1.1.1f-1ubuntu2.24+esm1",
        "1.1.1f-1ubuntu2.24+esm2",
        "1.1.1f-1ubuntu2.24+esm3",
        "1.1.1f-1ubuntu2.24+esm4"
      ]
    }
  ],
  "aliases": [],
  "details": "USN-8678-1 fixed vulnerabilities in OpenSSL. This update provides the\ncorresponding fix for OpenSSL and OpenSSL 1.0 on Ubuntu 14.04 LTS,\nUbuntu 16.04 LTS, and Ubuntu 18.04 LTS.\n\nIn addition, this update also fixes the following issues that were\nnot previously addressed in those releases:\n\nIt was discovered that OpenSSL incorrectly handled TLS handshake\nmessage buffering. A remote attacker could possibly use this issue to\ncause OpenSSL to consume excessive memory, leading to a denial of\nservice. (LP: #2161371)\n\nIt was discovered that OpenSSL incorrectly handled session cache\nmanagement when processing TLSv1.3 sessions. A remote attacker could\npossibly use this issue to cause OpenSSL to consume excessive memory,\nleading to a denial of service. This issue only affected OpenSSL 1.1.1\non Ubuntu 18.04 LTS. (CVE-2024-2511)\n\nIt was discovered that OpenSSL incorrectly handled the SSL_select_next_proto\nfunction when called with an empty client protocol list. A remote attacker\ncould possibly use this issue to cause OpenSSL to disclose private memory\ncontents to the peer, leading to a loss of confidentiality. This issue\nonly affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2024-5535)\n\nOriginal advisory details:\n\n It was discovered that OpenSSL incorrectly handled buffering of DTLS\n records for a future epoch. A remote attacker could possibly use this issue\n to cause OpenSSL to use excessive resources, leading to a denial of\n service. (CVE-2026-54874)\n\n It was discovered that OpenSSL incorrectly handled CMS key unwrapping. A\n remote attacker could possibly use this issue to cause a heap buffer\n overflow, leading to a denial of service or arbitrary code execution.\n (CVE-2026-63072)\n",
  "id": "USN-8678-2",
  "modified": "2026-08-25T18:15:33Z",
  "published": "2026-08-25T18:15:33Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-8678-2"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-2511"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2024-5535"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-54874"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-63072"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "openssl, openssl1.0 vulnerabilities",
  "upstream": [
    "UBUNTU-CVE-2024-2511",
    "UBUNTU-CVE-2024-5535",
    "UBUNTU-CVE-2026-54874",
    "UBUNTU-CVE-2026-63072"
  ]
}



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Tags
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.