{
  "cveId": "CVE-2021-23841",
  "url": "https://patchblox.com/security/cve/CVE-2021-23841",
  "summary": "CVE-2021-23841 is fixed in 12 products on 1 platform, first by libssl1.0.0 1.0.2n-1ubuntu5.6, released February 16, 2021. It is not reported as exploited. Patch Radar priority: High.",
  "title": "edk2-aarch64: EDK (Embedded Development Kit) is a project to enable UEFI support for Virtual Machines",
  "description": "EDK (Embedded Development Kit) is a project to enable UEFI support for Virtual Machines. This package contains a sample 64-bit UEFI firmware for QEMU and KVM. \n\nThe following packages have been upgraded to a later upstream version: edk2 (20210527gite1999b264f1f). (BZ#1846481, BZ#1938238)\n\nSecurity Fix(es):\n\n* openssl: integer overflow in CipherUpdate (CVE-2021-23840)\n\n* openssl: NULL pointer dereference in X509_issuer_and_serial_hash() (CVE-2021-23841)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n\nAdditional Changes:\n\nFor detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.",
  "published": "2021-02-16T09:15:00Z",
  "severity": "Moderate",
  "cvss": 7.5,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss": 0.0741,
  "epssPercentile": 0.94477,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "edk2",
      "release": "rocky 8",
      "fixedVersion": "0:20210527gite1999b264f1f-3.el8",
      "fix": "RLSA-2021:4198",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2021-4198",
      "released": "2021-11-09T08:37:02Z"
    },
    {
      "platform": "linux",
      "product": "edk2-aarch64",
      "release": "RHEL 8",
      "fixedVersion": "0:20210527gite1999b264f1f-3.el8",
      "fix": "RHSA-2021:4198",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4198",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "edk2-ovmf",
      "release": "RHEL 8",
      "fixedVersion": "0:20210527gite1999b264f1f-3.el8",
      "fix": "RHSA-2021:4198",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4198",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "edk2-ovmf",
      "release": "almalinux 8",
      "fixedVersion": "20210527gite1999b264f1f-3.el8",
      "fix": "ALSA-2021:4198",
      "url": "https://patchblox.com/security/fix/linux/alsa-2021-4198",
      "released": "2021-11-09T08:37:02Z"
    },
    {
      "platform": "linux",
      "product": "libssl1.0.0",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.0.2n-1ubuntu5.6",
      "fix": "libssl1.0.0 1.0.2n-1ubuntu5.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libssl1.0.0-1.0.2n-1ubuntu5.6",
      "released": "2021-02-16T09:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libssl1.1",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.1.1-1ubuntu2.1~18.04.8",
      "fix": "libssl1.1 1.1.1-1ubuntu2.1~18.04.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libssl1.1-1.1.1-1ubuntu2.1-18.04.8",
      "released": "2021-02-16T09:15:00Z"
    },
    {
      "platform": "linux",
      "product": "libssl1.1",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.1.1f-1ubuntu2.2",
      "fix": "libssl1.1 1.1.1f-1ubuntu2.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-libssl1.1-1.1.1f-1ubuntu2.2",
      "released": "2021-02-16T09:15:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "RHEL 8",
      "fixedVersion": "1:1.1.1k-4.el8",
      "fix": "RHSA-2021:4424",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4424",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.1.1-1ubuntu2.1~18.04.8",
      "fix": "openssl 1.1.1-1ubuntu2.1~18.04.8",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-openssl-1.1.1-1ubuntu2.1-18.04.8",
      "released": "2021-02-16T09:15:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "1.1.1f-1ubuntu2.2",
      "fix": "openssl 1.1.1f-1ubuntu2.2",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-openssl-1.1.1f-1ubuntu2.2",
      "released": "2021-02-16T09:15:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "ol 8",
      "fixedVersion": "2:1.1.1k-4.ksplice1.el8",
      "fix": "ELSA-2021-9561",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9561",
      "released": "2021-11-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl",
      "release": "rocky 8",
      "fixedVersion": "1:1.1.1k-4.el8",
      "fix": "RLSA-2021:4424",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2021-4424",
      "released": "2021-11-09T09:21:13Z"
    },
    {
      "platform": "linux",
      "product": "openssl-debugsource",
      "release": "ol 8",
      "fixedVersion": "2:1.1.1k-4.ksplice1.el8",
      "fix": "ELSA-2021-9561",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9561",
      "released": "2021-11-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "RHEL 8",
      "fixedVersion": "1:1.1.1k-4.el8",
      "fix": "RHSA-2021:4424",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4424",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-devel",
      "release": "ol 8",
      "fixedVersion": "2:1.1.1k-4.ksplice1.el8",
      "fix": "ELSA-2021-9561",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9561",
      "released": "2021-11-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "RHEL 8",
      "fixedVersion": "1:1.1.1k-4.el8",
      "fix": "RHSA-2021:4424",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4424",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-libs",
      "release": "ol 8",
      "fixedVersion": "2:1.1.1k-4.ksplice1.el8",
      "fix": "ELSA-2021-9561",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9561",
      "released": "2021-11-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "RHEL 8",
      "fixedVersion": "1:1.1.1k-4.el8",
      "fix": "RHSA-2021:4424",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-4424",
      "released": "2021-11-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-perl",
      "release": "ol 8",
      "fixedVersion": "2:1.1.1k-4.ksplice1.el8",
      "fix": "ELSA-2021-9561",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9561",
      "released": "2021-11-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl-static",
      "release": "ol 8",
      "fixedVersion": "2:1.1.1k-4.ksplice1.el8",
      "fix": "ELSA-2021-9561",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-9561",
      "released": "2021-11-23T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "openssl1.0",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.0.2n-1ubuntu5.6",
      "fix": "openssl1.0 1.0.2n-1ubuntu5.6",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-openssl1.0-1.0.2n-1ubuntu5.6",
      "released": "2021-02-16T09:15:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}