{
  "cveId": "CVE-2023-27539",
  "url": "https://patchblox.com/security/cve/CVE-2023-27539",
  "summary": "CVE-2023-27539 is fixed in 3 products on 1 platform, first by ruby-rack 1.6.4-4ubuntu0.2\u002Besm5, released March 21, 2023. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "pcs: The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.\n\nSecurity Fix(...",
  "description": "The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.\n\nSecurity Fix(es):\n\n* rubygem-rack: Denial of service in Multipart MIME parsing (CVE-2023-27530)\n\n* rubygem-rack: denial of service in header parsing (CVE-2023-27539)\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\nBug Fix(es):\n\n* Command \u0027pcs config checkpoint diff\u0027 does not show configuration differences between checkpoints (BZ#2180700)\n\n* Need a way to add a scsi fencing device to a cluster without requiring a restart of all cluster resources (BZ#2180706)",
  "published": "2023-03-21T17:00:00Z",
  "severity": "Moderate",
  "cvss": 5.3,
  "cvssVector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
  "epss": 0.01058,
  "epssPercentile": 0.64718,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "pcs",
      "release": "RHEL 8",
      "fixedVersion": "0:0.10.15-4.el8_8.1",
      "fix": "RHSA-2023:3082",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-3082",
      "released": "2023-05-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "pcs",
      "release": "RHEL 9",
      "fixedVersion": "0:0.11.4-7.el9_2",
      "fix": "RHSA-2023:2652",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-2652",
      "released": "2023-05-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "pcs",
      "release": "almalinux 8",
      "fixedVersion": "0.10.15-4.el8_8.1.alma",
      "fix": "ALSA-2023:3082",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-3082",
      "released": "2023-05-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "pcs",
      "release": "almalinux 9",
      "fixedVersion": "0.11.4-7.el9_2",
      "fix": "ALSA-2023:2652",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-2652",
      "released": "2023-05-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "pcs",
      "release": "ol 8",
      "fixedVersion": "0:0.10.15-4.0.1.el8_8.1",
      "fix": "ELSA-2023-3082",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-3082",
      "released": "2023-05-29T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "pcs",
      "release": "ol 9",
      "fixedVersion": "0:0.11.4-7.el9_2",
      "fix": "ELSA-2023-12595",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-12595",
      "released": "2023-07-20T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "pcs",
      "release": "rocky 8",
      "fixedVersion": "0:0.10.15-4.el8_8.1",
      "fix": "RLSA-2023:3082",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2023-3082",
      "released": "2023-05-18T19:18:23Z"
    },
    {
      "platform": "linux",
      "product": "pcs",
      "release": "rocky 9",
      "fixedVersion": "0:0.11.4-7.el9_2",
      "fix": "RLSA-2023:2652",
      "url": "https://patchblox.com/security/fix/linux/rlsa-2023-2652",
      "released": "2023-05-25T19:53:02Z"
    },
    {
      "platform": "linux",
      "product": "pcs-snmp",
      "release": "RHEL 8",
      "fixedVersion": "0:0.10.15-4.el8_8.1",
      "fix": "RHSA-2023:3082",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-3082",
      "released": "2023-05-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "pcs-snmp",
      "release": "RHEL 9",
      "fixedVersion": "0:0.11.4-7.el9_2",
      "fix": "RHSA-2023:2652",
      "url": "https://patchblox.com/security/fix/linux/rhsa-2023-2652",
      "released": "2023-05-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "pcs-snmp",
      "release": "almalinux 8",
      "fixedVersion": "0.10.15-4.el8_8.1.alma",
      "fix": "ALSA-2023:3082",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-3082",
      "released": "2023-05-16T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "pcs-snmp",
      "release": "almalinux 9",
      "fixedVersion": "0.11.4-7.el9_2",
      "fix": "ALSA-2023:2652",
      "url": "https://patchblox.com/security/fix/linux/alsa-2023-2652",
      "released": "2023-05-09T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "pcs-snmp",
      "release": "ol 8",
      "fixedVersion": "0:0.10.15-4.0.1.el8_8.1",
      "fix": "ELSA-2023-3082",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-3082",
      "released": "2023-05-29T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "pcs-snmp",
      "release": "ol 9",
      "fixedVersion": "0:0.11.4-7.el9_2",
      "fix": "ELSA-2023-12595",
      "url": "https://patchblox.com/security/fix/linux/elsa-2023-12595",
      "released": "2023-07-20T00:00:00Z"
    },
    {
      "platform": "linux",
      "product": "ruby-rack",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "2.2.6.4-1",
      "fix": "DEBIAN-CVE-2023-27539",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-27539",
      "released": "2025-01-09T01:15:07Z"
    },
    {
      "platform": "linux",
      "product": "ruby-rack",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "2.2.6.4-1",
      "fix": "DEBIAN-CVE-2023-27539",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-27539",
      "released": "2025-01-09T01:15:07Z"
    },
    {
      "platform": "linux",
      "product": "ruby-rack",
      "release": "Debian 14",
      "fixedVersion": "2.2.6.4-1",
      "fix": "DEBIAN-CVE-2023-27539",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2023-27539",
      "released": "2025-01-09T01:15:07Z"
    },
    {
      "platform": "linux",
      "product": "ruby-rack",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1.6.4-4ubuntu0.2\u002Besm5",
      "fix": "ruby-rack 1.6.4-4ubuntu0.2\u002Besm5",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-ruby-rack-1.6.4-4ubuntu0.2-esm5",
      "released": "2023-03-21T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "ruby-rack",
      "release": "Ubuntu 20.04 LTS (focal)",
      "fixedVersion": "2.0.7-2ubuntu0.1\u002Besm4",
      "fix": "ruby-rack 2.0.7-2ubuntu0.1\u002Besm4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-focal-ruby-rack-2.0.7-2ubuntu0.1-esm4",
      "released": "2023-03-21T17:00:00Z"
    },
    {
      "platform": "linux",
      "product": "ruby-rack",
      "release": "Ubuntu 22.04.1 LTS (jammy)",
      "fixedVersion": "2.1.4-5ubuntu1\u002Besm4",
      "fix": "ruby-rack 2.1.4-5ubuntu1\u002Besm4",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-jammy-ruby-rack-2.1.4-5ubuntu1-esm4",
      "released": "2023-03-21T17:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T07:25:28Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}