{
  "cveId": "CVE-2018-12029",
  "url": "https://patchblox.com/security/cve/CVE-2018-12029",
  "summary": "CVE-2018-12029 is fixed in 3 products on 1 platform, first by libapache2-mod-passenger 5.0.30-1\u002Bdeb9u1build0.18.04.1, released June 17, 2018. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "libapache2-mod-passenger: A race condition in the nginx module in Phusion Passenger 3.x through 5.x before 5.3.2 allows local escalation of pri...",
  "description": "A race condition in the nginx module in Phusion Passenger 3.x through 5.x before 5.3.2 allows local escalation of privileges when a non-standard passenger_instance_registry_dir with insufficiently strict permissions is configured. Replacing a file with a symlink after the file was created, but before it was chowned, leads to the target of the link being chowned via the path. Targeting sensitive files such as root\u0027s crontab file allows privilege escalation.",
  "published": "2018-06-17T13:29:00Z",
  "severity": "Medium",
  "epss": 0.00274,
  "epssPercentile": 0.1988,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "fixes": [
    {
      "platform": "linux",
      "product": "libapache2-mod-passenger",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.0.30-1\u002Bdeb9u1build0.18.04.1",
      "fix": "libapache2-mod-passenger 5.0.30-1\u002Bdeb9u1build0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-libapache2-mod-passenger-5.0.30-1-deb9u1build0.18.04.1",
      "released": "2018-06-17T13:29:00Z"
    },
    {
      "platform": "linux",
      "product": "passenger",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.0.30-1\u002Bdeb9u1build0.18.04.1",
      "fix": "passenger 5.0.30-1\u002Bdeb9u1build0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-passenger-5.0.30-1-deb9u1build0.18.04.1",
      "released": "2018-06-17T13:29:00Z"
    },
    {
      "platform": "linux",
      "product": "ruby-passenger",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "5.0.30-1\u002Bdeb9u1build0.18.04.1",
      "fix": "ruby-passenger 5.0.30-1\u002Bdeb9u1build0.18.04.1",
      "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-ruby-passenger-5.0.30-1-deb9u1build0.18.04.1",
      "released": "2018-06-17T13:29:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}