{
  "cveId": "CVE-2020-13776",
  "url": "https://patchblox.com/security/cve/CVE-2020-13776",
  "summary": "CVE-2020-13776 is fixed in 8 products on 1 platform, first by RHSA-2021:1611, released May 18, 2021. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "systemd: The systemd packages contain systemd, a system and service manager for Linux, compatible with the SysV and LSB init s...",
  "description": "The systemd packages contain systemd, a system and service manager for Linux, compatible with the SysV and LSB init scripts. It provides aggressive parallelism capabilities, uses socket and D-Bus activation for starting services, offers on-demand starting of daemons, and keeps track of processes using Linux cgroups. In addition, it supports snapshotting and restoring of the system state, maintains mount and automount points, and implements an elaborate transactional dependency-based service control logic. It can also work as a drop-in replacement for sysvinit.\n\nSecurity Fix(es):\n\n* systemd: Spoofing of XDG_SEAT allows for actions to be checked against \u0022allow_active\u0022 instead of \u0022allow_any\u0022 (CVE-2019-3842)\n\n* systemd: Mishandles numerical usernames beginning with decimal digits or 0x followed by hexadecimal digits (CVE-2020-13776)\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 8.4 Release Notes linked from the References section.",
  "published": "2021-05-18T00:00:00Z",
  "severity": "Moderate",
  "cvss": 6.7,
  "epss": 0.00461,
  "epssPercentile": 0.40153,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "systemd",
      "release": "RHEL 8",
      "fixedVersion": "0:239-45.el8",
      "fix": "RHSA-2021:1611",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-1611",
      "released": "2021-05-18T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "systemd",
      "release": "ol 8",
      "fixedVersion": "0:239-45.0.1.el8",
      "fix": "ELSA-2021-1611",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-1611",
      "released": "2021-05-25T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "systemd-container",
      "release": "RHEL 8",
      "fixedVersion": "0:239-45.el8",
      "fix": "RHSA-2021:1611",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-1611",
      "released": "2021-05-18T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "systemd-container",
      "release": "ol 8",
      "fixedVersion": "0:239-45.0.1.el8",
      "fix": "ELSA-2021-1611",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-1611",
      "released": "2021-05-25T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "systemd-devel",
      "release": "RHEL 8",
      "fixedVersion": "0:239-45.el8",
      "fix": "RHSA-2021:1611",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-1611",
      "released": "2021-05-18T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "systemd-devel",
      "release": "ol 8",
      "fixedVersion": "0:239-45.0.1.el8",
      "fix": "ELSA-2021-1611",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-1611",
      "released": "2021-05-25T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "systemd-journal-remote",
      "release": "RHEL 8",
      "fixedVersion": "0:239-45.el8",
      "fix": "RHSA-2021:1611",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-1611",
      "released": "2021-05-18T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "systemd-journal-remote",
      "release": "ol 8",
      "fixedVersion": "0:239-45.0.1.el8",
      "fix": "ELSA-2021-1611",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-1611",
      "released": "2021-05-25T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "systemd-libs",
      "release": "RHEL 8",
      "fixedVersion": "0:239-45.el8",
      "fix": "RHSA-2021:1611",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-1611",
      "released": "2021-05-18T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "systemd-libs",
      "release": "ol 8",
      "fixedVersion": "0:239-45.0.1.el8",
      "fix": "ELSA-2021-1611",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-1611",
      "released": "2021-05-25T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "systemd-pam",
      "release": "RHEL 8",
      "fixedVersion": "0:239-45.el8",
      "fix": "RHSA-2021:1611",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-1611",
      "released": "2021-05-18T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "systemd-pam",
      "release": "ol 8",
      "fixedVersion": "0:239-45.0.1.el8",
      "fix": "ELSA-2021-1611",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-1611",
      "released": "2021-05-25T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "systemd-tests",
      "release": "RHEL 8",
      "fixedVersion": "0:239-45.el8",
      "fix": "RHSA-2021:1611",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-1611",
      "released": "2021-05-18T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "systemd-tests",
      "release": "ol 8",
      "fixedVersion": "0:239-45.0.1.el8",
      "fix": "ELSA-2021-1611",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-1611",
      "released": "2021-05-25T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "systemd-udev",
      "release": "RHEL 8",
      "fixedVersion": "0:239-45.el8",
      "fix": "RHSA-2021:1611",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2021-1611",
      "released": "2021-05-18T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "systemd-udev",
      "release": "ol 8",
      "fixedVersion": "0:239-45.0.1.el8",
      "fix": "ELSA-2021-1611",
      "url": "https://patchblox.com/security/fix/linux/elsa-2021-1611",
      "released": "2021-05-25T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T06:59:42Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}