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High

Security advisory

Type: advisorySources: OSVCVE: CVE-2018-12028

An Incorrect Access Control vulnerability in SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows a Passenger-managed malicious application, upon spawning a child process, to report an arbitrary different PID back to Passenger's process manager. If the malicious application then generates an error, it would cause Passenger's process manager to kill said reported arbitrary PID.

Products
Not specified
Affected versions
Not specified
Fixed versions
Not specified
CVEs
CVE-2018-12028
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 04:38 UTC · Revision 1

Source evidence

CVE-2018-12028

core-osv · Original source

Published 17 Jun 2018, 20:29 UTC

An Incorrect Access Control vulnerability in SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows a Passenger-managed malicious application, upon spawning a child process, to report an arbitrary different PID back to Passenger's process manager. If the malicious application then generates an error, it would cause Passenger's process manager to kill said reported arbitrary PID.

osv:CVE-2018-12028
Complete source record
{
  "id": "a0e6a3d104c4659f226580ba038b83282275d4833bcdb0169bcca03a9d236d13",
  "url": "https://osv.dev/vulnerability/CVE-2018-12028",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-12028",
    "summary": "An Incorrect Access Control vulnerability in SpawningKit in Phusion Passenger 5.3.x before 5.3.2 allows a Passenger-managed malicious application, upon spawning a child process, to report an arbitrary different PID back to Passenger's process manager. If the malicious application then generates an error, it would cause Passenger's process manager to kill said reported arbitrary PID.",
    "evidence": "osv:CVE-2018-12028",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2018-12028",
      "aliases": [
        "CVE-2018-12028",
        "GHSA-jjhj-8gx7-x836"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/phusion/passenger",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a53aa1fb31489cd27c5c34f059ed2c90ddca012b"
                },
                {
                  "fixed": "5e4d60575fadfd68913bd229990cb9f3feb393a9"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:phusion:passenger:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "5.3.0"
                      },
                      {
                        "fixed": "5.3.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "release-5.3.1",
            "release-5.3.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-12028.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:21.114746347Z",
      "provider": "osv",
      "references": [
        "https://blog.phusion.nl/passenger-5-3-2",
        "https://security.gentoo.org/glsa/201807-02"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-12028",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 430422,
  "published_at": "2018-06-17T20:29:00.463+00:00"
}