{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/9470?format=json","vulnerability_id":"VCID-a91w-ppku-ebfc","summary":"Information Exposure\nGiven 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.","aliases":[{"alias":"CVE-2018-12027"},{"alias":"GHSA-whfx-877c-5p28"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/934478?format=json","purl":"pkg:deb/debian/passenger@0?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/passenger@0%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/934479?format=json","purl":"pkg:deb/debian/passenger@5.0.30-1.2%2Bdeb11u1?distro=trixie","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-fhu6-3k8p-aub2"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/passenger@5.0.30-1.2%252Bdeb11u1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/934477?format=json","purl":"pkg:deb/debian/passenger@6.0.17%2Bds-1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/passenger@6.0.17%252Bds-1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/934481?format=json","purl":"pkg:deb/debian/passenger@6.0.26%2Bds-1.1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/passenger@6.0.26%252Bds-1.1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/934480?format=json","purl":"pkg:deb/debian/passenger@6.1.1%2Bds-1?distro=trixie","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:deb/debian/passenger@6.1.1%252Bds-1%3Fdistro=trixie"},{"url":"http://public2.vulnerablecode.io/api/packages/76204?format=json","purl":"pkg:ebuild/www-apache/passenger@5.3.2","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:ebuild/www-apache/passenger@5.3.2"},{"url":"http://public2.vulnerablecode.io/api/packages/29114?format=json","purl":"pkg:gem/passenger@5.3.2","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/passenger@5.3.2"}],"affected_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/29113?format=json","purl":"pkg:gem/passenger@5.3.0","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-a91w-ppku-ebfc"},{"vulnerability":"VCID-e99s-zs31-c3cn"},{"vulnerability":"VCID-etvv-bvc3-qyan"},{"vulnerability":"VCID-xn3j-fysa-ybga"},{"vulnerability":"VCID-z5g4-xxf6-vbbh"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/passenger@5.3.0"},{"url":"http://public2.vulnerablecode.io/api/packages/173322?format=json","purl":"pkg:gem/passenger@5.3.1","is_vulnerable":true,"affected_by_vulnerabilities":[{"vulnerability":"VCID-a91w-ppku-ebfc"},{"vulnerability":"VCID-e99s-zs31-c3cn"},{"vulnerability":"VCID-etvv-bvc3-qyan"},{"vulnerability":"VCID-xn3j-fysa-ybga"},{"vulnerability":"VCID-z5g4-xxf6-vbbh"}],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:gem/passenger@5.3.1"}],"references":[{"reference_url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-12027.json","reference_id":"","reference_type":"","scores":[{"value":"6.3","scoring_system":"cvssv3","scoring_elements":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N"}],"url":"https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-12027.json"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2018-12027","reference_id":"","reference_type":"","scores":[{"value":"0.00275","scoring_system":"epss","scoring_elements":"0.50811","published_at":"2026-05-05T12:55:00Z"},{"value":"0.00275","scoring_system":"epss","scoring_elements":"0.50846","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00275","scoring_system":"epss","scoring_elements":"0.50901","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00275","scoring_system":"epss","scoring_elements":"0.50927","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00275","scoring_system":"epss","scoring_elements":"0.50885","published_at":"2026-04-07T12:55:00Z"},{"value":"0.00275","scoring_system":"epss","scoring_elements":"0.50942","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00275","scoring_system":"epss","scoring_elements":"0.50939","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00275","scoring_system":"epss","scoring_elements":"0.50981","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00275","scoring_system":"epss","scoring_elements":"0.5096","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00275","scoring_system":"epss","scoring_elements":"0.50943","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00275","scoring_system":"epss","scoring_elements":"0.50987","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00275","scoring_system":"epss","scoring_elements":"0.50967","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00275","scoring_system":"epss","scoring_elements":"0.50915","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00275","scoring_system":"epss","scoring_elements":"0.50923","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00275","scoring_system":"epss","scoring_elements":"0.50884","published_at":"2026-04-29T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2018-12027"},{"reference_url":"https://blog.phusion.nl/passenger-5-3-2","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3","scoring_elements":""},{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://blog.phusion.nl/passenger-5-3-2"},{"reference_url":"https://github.com/phusion/passenger","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/phusion/passenger"},{"reference_url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/passenger/CVE-2018-12027.yml","reference_id":"","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/passenger/CVE-2018-12027.yml"},{"reference_url":"https://bugzilla.redhat.com/show_bug.cgi?id=1592619","reference_id":"1592619","reference_type":"","scores":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1592619"},{"reference_url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:phusion:passenger:*:*:*:*:*:*:*:*","reference_id":"cpe:2.3:a:phusion:passenger:*:*:*:*:*:*:*:*","reference_type":"","scores":[],"url":"https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:phusion:passenger:*:*:*:*:*:*:*:*"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2018-12027","reference_id":"CVE-2018-12027","reference_type":"","scores":[{"value":"6.5","scoring_system":"cvssv2","scoring_elements":"AV:N/AC:L/Au:S/C:P/I:P/A:P"},{"value":"8.8","scoring_system":"cvssv3","scoring_elements":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-12027"},{"reference_url":"https://github.com/advisories/GHSA-whfx-877c-5p28","reference_id":"GHSA-whfx-877c-5p28","reference_type":"","scores":[{"value":"HIGH","scoring_system":"cvssv3.1_qr","scoring_elements":""}],"url":"https://github.com/advisories/GHSA-whfx-877c-5p28"},{"reference_url":"https://security.gentoo.org/glsa/201807-02","reference_id":"GLSA-201807-02","reference_type":"","scores":[{"value":"8.8","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://security.gentoo.org/glsa/201807-02"}],"weaknesses":[{"cwe_id":1035,"name":"OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities","description":"Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2017."},{"cwe_id":200,"name":"Exposure of Sensitive Information to an Unauthorized Actor","description":"The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information."},{"cwe_id":732,"name":"Incorrect Permission Assignment for Critical Resource","description":"The product specifies permissions for a security-critical resource in a way that allows that resource to be read or modified by unintended actors."},{"cwe_id":937,"name":"OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities","description":"Weaknesses in this category are related to the A9 category in the OWASP Top Ten 2013."},{"cwe_id":284,"name":"Improper Access Control","description":"The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor."}],"exploits":[],"severity_range_score":"6.3 - 8.9","exploitability":"0.5","weighted_severity":"8.0","risk_score":4.0,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-a91w-ppku-ebfc"}