ubuntu-cve-2018-12027
Vulnerability from osv_ubuntu
Published
2018-06-17 20:29
Modified
2025-07-16 04:53
Summary
Details

An Insecure Permissions vulnerability in SpawningKit in Phusion Passenger 5.3.x before 5.3.2 causes information disclosure in the following situation: given a Passenger-spawned application process that reports that it listens on a certain Unix domain socket, if any of the parent directories of said socket are writable by a normal user that is not the application's user, then that non-application user can swap that directory with something else, resulting in traffic being redirected to a non-application user's process through an alternative Unix domain socket.

Severity
8.8 (High)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libapache2-mod-passenger",
            "binary_version": "6.0.10-3build1"
          },
          {
            "binary_name": "libapache2-mod-passenger-dbgsym",
            "binary_version": "6.0.10-3build1"
          },
          {
            "binary_name": "passenger",
            "binary_version": "6.0.10-3build1"
          },
          {
            "binary_name": "passenger-dbgsym",
            "binary_version": "6.0.10-3build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "passenger",
        "purl": "pkg:deb/ubuntu/passenger@6.0.10-3build1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.0.10-3build1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.0.30-1.2",
        "6.0.10-3"
      ]
    }
  ],
  "aliases": [],
  "details": "An Insecure Permissions vulnerability in SpawningKit in Phusion Passenger 5.3.x before 5.3.2 causes information disclosure in the following situation: given a Passenger-spawned application process that reports that it listens on a certain Unix domain socket, if any of the parent directories of said socket are writable by a normal user that is not the application\u0027s user, then that non-application user can swap that directory with something else, resulting in traffic being redirected to a non-application user\u0027s process through an alternative Unix domain socket.",
  "id": "UBUNTU-CVE-2018-12027",
  "modified": "2025-07-16T04:53:48Z",
  "published": "2018-06-17T20:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-12027"
    },
    {
      "type": "REPORT",
      "url": "https://blog.phusion.nl/2018/06/12/passenger-5-3-2-various-security-fixes/"
    },
    {
      "type": "REPORT",
      "url": "https://blog.phusion.nl/passenger-5-3-2"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2018-12027"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2018-12027"
  ],
  "withdrawn": "2025-07-18T16:44:37Z"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.